@article { ISI:000228625600003, title = {Corrosion protective poly(o-toluldine) coatings on copper}, journal = {Corrosion Science}, volume = {47}, number = {6}, year = {2005}, month = {JUN}, pages = {1352-1369}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

This study examines the use of poly(o-toulidine) (POT) coatings for corrosion protection of copper (Cu) in an aqueous solution of 3\% NaCl. The POT coatings were synthesized on Cu substrates under cyclic voltammetric conditions from an aqueous solution of sodium oxalate. The resulting, POT coatings were uniform, shiny and strongly adherent to the Cu substrates. These coatings were characterized by cyclic voltammetry (CV), UV-visible absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The ability of POT to serve as a corrosion protective coating for Cu was examined by potentiodynamic polarization measurements and CV. The results of this study clearly reveal that the POT acts as corrosion protective coating on Cu and reduces the corrosion rate of Cu almost by a factor of 40. (c) 2004 Elsevier Ltd. All rights reserved.

}, keywords = {Conducting polymer coatings, Copper, Corrosion resistant coatings, cyclic voltammetry, poly(o-toluidine) coatings}, issn = {0010-938X}, doi = {10.1016/j.corsci.2004.07.041}, author = {Shinde, V. and Sainkar, S. R. and Patil, P. P.} } @article { ISI:000244831800017, title = {Electrochemical polymerization of o-anisidine on low carbon steel from aqueous salicylate solution: corrosion protection study}, journal = {Surface \& Coating Technology}, volume = {201}, number = {6}, year = {2006}, month = {DEC}, pages = {2240-2247}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

The electrochemical polymerization of o-anisidine was carried out on low carbon steel from an aqueous salicylate medium using cyclic voltammetry. The resulting poly(o-anisidine) coatings were uniform and adherent to the steel substrates. These coatings were characterized by cyclic voltammetry, LTV-visible absorption spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction measurements and scanning electron microscopy. The ability of the poly(o-anisidine) coatings to protect low carbon steel in an aqueous 3\% NaCl was evaluated by the potentiodynamic polarization measurements. The potentiodynamic polarization measurement reveals that the poly(o-anisidine) coating increases the corrosion potential and reduces the corrosion rate of low carbon steel almost by a factor of 15. (c) 2006 Elsevier B.V. All rights reserved.

}, keywords = {Conducting polymer coatings, corrosion protective coatings, cyclic voltammetry, Electrochemical polymerization, low carbon steel, poly(o-anisidine) coatings}, issn = {0257-8972}, doi = {10.1016/j.surfcoat.2006.03.028}, author = {Wankhede, M. G. and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000243335700022, title = {Electrochemical synthesis of corrosion protective polyaniline coatings on mild steel from aqueous salicylate medium}, journal = {Science and Technology of Advanced Materials}, volume = {7}, number = {7}, year = {2006}, month = {OCT}, pages = {732-744}, publisher = {NATL INST MATERIALS SCIENCE}, type = {Article}, address = {NATL INST MATERIALS SCIENCE, 1-2-1 SENGEN, TSUKUBA-CITY, IBARAKI, 305-0047, JAPAN}, abstract = {

Strongly adherent polyaniline coatings were electrochemically synthesized on mild steel from an aqueous salicylate medium. These coatings were characterized by cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy. The extent of the corrosion protection offered by polyaniline coatings to mild steel was investigated in aqueous 3\% NaCl solution, 0.01 M Na2SO4 Solution and in aqueous solutions of NaCl + Na2SO4 with different concentrations by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results of these studies reveal that the corrosion resistance of the polyaniline-coated mild steel is significantly higher and the corrosion rate is considerably lower than that of uncoated steel. (c) 2006 Published by NIMS and Elsevier Ltd.

}, keywords = {Conducting polymer coatings, corrosion protective coatings, cyclic voltammetry, Electrochemical polymerization, polyaniline coatings mild steel}, issn = {1468-6996}, doi = {10.1016/j.stam.2006.09.014}, author = {Pawar, Pritee and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000242601000036, title = {Electron transfer behavior of monolayer protected nanoclusters and nanowires of silver and gold}, journal = {Journal of Nanoscience and Nanotechnology}, volume = {6}, number = {11}, year = {2006}, note = {International Conference on Nanoscience and Nanotechnology, Gwangju Inst Sci \& Technol, Gwangju, SOUTH KOREA, NOV 10-12, 2005}, month = {NOV}, pages = {3464-3469}, publisher = {Gwangju Jeonnam Nano Technol Union}, type = {Article}, address = {25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA}, abstract = {

Understanding the electron transfer behavior of nanometer sized, both metallic and semiconducting particles and wires is important due to the fundamental interest in size and shape dependent electronic properties and also because of its applications in nano-electronic devices like single electron transistors and molecular switches. Monolayer protected nanoclusters enable one simple and elegant method of synthesis of these types of metallic and semiconducting materials using interfacial chemistry as has been successfully used in several applications ranging from catalysis to molecular electronics. The success of this type of nanostructured materials is due in part to the well known protecting/stabilizing action of the ligands (also known as surface passivating/capping agents), which facilitate the synthesis and processing of these hydrophobic colloids in solution form. The present article discusses the electron transfer behavior of silver nanowires and nanoparticles with varied sizes. In particular, we have investigated the electrochemical properties of silver nanowires (diameter 70 nm, length several micrometers) and compared with the behavior of similar relatively larger sized nanoparticles (size 40 nm). A critical analysis of the redox behavior of silver nanowires and nanoparticles is presented in aqueous medium under various electrolytic conditions along with a comparison of analogous properties of smaller sized (2-7 nm) silver and gold nanoclusters.

}, keywords = {cyclic voltammetry, nanoclusters/nanoparticles, Nanowires}, issn = {1533-4880}, doi = {10.1166/jnn.2006.035}, author = {Sharma, Jadab and Vivek, J. P. and Vijayamohanan, Kunjukrishna P.} } @article { ISI:000236648800046, title = {Formation of poly(o-anisidine) coatings on copper from aqueous salicylate solution}, journal = {Surface \& Coatings Technology}, volume = {200}, number = {18-19}, year = {2006}, month = {MAY}, pages = {5557-5565}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

Poly(o-anisidine) coatings have been electrosynthesized by using cyclic voltammetry on copper from an aqueous salicylate medium. Cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize these coatings, which indicates that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of o-anisidine on copper substrate. Cyclic voltammetry accompanied by the X-ray photoelectron spectroscopy was used to characterize the surface modifications induced by polarizing the copper substrate in the aqueous salicylate solution (without monomer). It was shown that the polarization of the copper in the aqueous salicylate medium results into the passivation of its surface via the formation of Cu(2)O and/or copper salicylate complex. It was found that the electrochemical polymerization of o-anisidine takes place after the passivation of the copper substrate via fort-nation of Cu(2)O and/or copper salicylate complex and results into the formation of shiny, uniform and strongly adherent poly(o-anisidine). The optical absorption spectroscopy reveals the formation of emraldine salt form of poly(o-anisidine). This study offers an electrochemical polymerization recipe to synthesize strongly adherent poly(o-anisidine) coating on copper from aqueous media for possible use in corrosion protection application. (c) 2005 Elsevier B.V. All rights reserved.

}, keywords = {conducting polymers, Copper, corrosion protective coatings, cyclic voltammetry, poly(o-anisidine) coatings}, issn = {0257-8972}, doi = {10.1016/j.surfcoat.2005.07.071}, author = {Chaudhari, Sudeshna and Mandale, A. B. and Patil, K. R. and Sainkar, S. R. and Patil, P. P.} } @article { ISI:000237909100023, title = {Organic dye molecules as reducing agent for the synthesis of electroactive gold nanoplates}, journal = {Journal of Colloid and Interface Science}, volume = {298}, number = {2}, year = {2006}, month = {JUN}, pages = {679-684}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, type = {Article}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

Highly crystalline, hexagonal and triangular nanoplates of gold are synthesized in high yield by a new wet chemical method using multifunctional molecules. Bismarck brown R (BBR) and Bismarck brown Y (BBY). This method involves a simple approach by keeping a mixture of aqueous HAuCl(4) solution and BBR/BBY solution in presence of poly(vinyl pyrrolidone) for 24 h. These nanostructures show unprecedented electrochemical properties exhibiting Surface confinement effect. The UV-visible (UV-vis) spectrum shows certain distinct features with absorptions at 300, 400,and 650 nm extending up to the near infrared region. Selected area electron diffraction patterns of these nanoparticles show highly oriented (111) crystal facets. X-ray diffraction analysis also confirms the Predominant orientation in the (111) crystal planes with lattice constant similar to 4.07 angstrom of face-centered-cubic (fcc) gold. X-ray photoelectron (XP) and Fourier transform infrared (FTIR) spectroscopic analysis shows the presence of a fraction of reducing molecules as surface passivating agent either in the unreacted molecular state or as a mixture of reacted and unreacted product which probably undergoes charge transfer with gold nanocrystals giving absorption at similar to 300 nm. (c) 2005 Elsevier Inc. All rights reserved.

}, keywords = {Bismarck brown, cyclic voltammetry, gold nanoplates, poly(vinyl pyrrolidone), surface plasmon resonance}, issn = {0021-9797}, doi = {10.1016/j.jcis.2005.12.048}, author = {Sharma, Jadab and Vijayamohanan, Kunjukrishna P.} } @article { ISI:000236590300058, title = {Poly(o-toluidine) coatings on copper: electrochemical synthesis from aqueous media}, journal = {Surface \& Coating Technology}, volume = {200}, number = {16-17}, year = {2006}, month = {APR}, pages = {5094-5101}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

Poly(o-toluidine) (POT) coatings were synthesized on copper (Cu) by electrochemical polymerization of o-toluidine using aqueous sodium oxalate solution as supporting electrolyte. The resulting coatings were uniform, compact and strongly adherent to the Cu substrate. These coatings were characterized by using cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) measurements and X-ray photoelectron spectroscopy (XPS). The results of these studies reveal that the sodium oxalate is suitable supporting electrolyte for the electrochemical polymerization of o-toluidine on Cu substrate. It is found that the electrochemical polymerization of o-toluidine takes place after the passivation of the Cu substrate via formation of copper oxalate (CuC2O4, H2O) layer, which is confirmed by XRD and XPS. The optical absorption spectroscopy study reveals the exclusive formation of the pernigraniline base (PB) form of POT. (c) 2005 Elsevier B.V. All rights reserved.

}, keywords = {Conducting polymer coatings, Copper, Corrosion resistant coatings, cyclic voltammetry, poly(o-toluidine) coatings}, issn = {0257-8972}, doi = {10.1016/j.surfcoat.2005.05.026}, author = {Shinde, V. and Mandale, A. B. and Patil, K. R. and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000238294800037, title = {Suppression of electron-transfer characteristics of ferrocene by OTS monolayer on a silicon/electrolyte interface}, journal = {Journal of Colloid and Interface Science}, volume = {299}, number = {2}, year = {2006}, month = {JUL}, pages = {777-784}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, type = {Article}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

The passivating behavior of self-assembled monolayers (SAMs) of octadecyltrichlorosilane (OTS) on an n-type Si(100) electrode with and without a redox species like ferrocene in a polar non-aqueous medium has been investigated using techniques like contact angle measurements, Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) to understand the role of the monolayer. The electron-transfer behavior of ferrocene is found to be drastically affected by the presence of monolayer and the reasons for these are analyzed as a function of the change in resistance, dielectric thickness and coverage of the monolayer. Electrochemical impedance analysis in the presence of ferrocene gives the monolayer coverage as 0.998 and the apparent rate constant calculated from this gives 4.85 x 10(-12) cm s(-1) in comparison with 4.4 x 10(-8) cm s(-1) for a similar electrode without any monolayer. A positive shift of 200 mV in the flat-band potential after monolayer formation also suggests the covalent coupling of the silane nionolayer offering a protective barrier. (c) 2006 Elsevier Inc. All rights reserved.

}, keywords = {cyclic voltammetry, ferrocene, impedance analysis, octadecyltrichlorosilane (OTS), rate constant, self-assembled monolayer (SAM)}, issn = {0021-9797}, doi = {10.1016/j.jcis.2006.03.013}, author = {Kulkarni, S. A. and Kakade, Bhalchandra A. and Mulla, Imtiaz S. and Pillai, V. K.} } @article { ISI:000242818000001, title = {Synthesis and characterization of corrosion protective poly(2,5-dimethylaniline) coatings on copper}, journal = {Applied Surface Science}, volume = {253}, number = {3}, year = {2006}, month = {NOV}, pages = {1037-1045}, publisher = {ELSEVIER SCIENCE BV}, type = {Review}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Poly(2,5-dimethylaniline) coatings were synthesized on copper (Cu) by electrochemical polymerization of 2,5-dimethylaniline in aqueous salicylate solution by using cyclic voltammetry. The characterization of these coatings was carried out by cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The results of these characterizations indicate that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of 2,5-dimethylaniline to generate strongly adherent and smooth poly (2,5-dimethylaniline) coatings on Cu substrates. The performance of poly(2,5-dimethylaniline) as protective coating against corrosion of Cu in aqueous 3\% NaCl was assessed by the potentiodynamic polarization technique. The results of the potentiodynamic polarization demonstrate that the poly(2,5-dimethylaniline) coating has ability to protect the Cu against corrosion. The corrosion potential was about 0.078 V versus SCE more positive in aqueous 3\% NaCl for the poly(2,5-dimethylaniline) coated Cu than that of uncoated Cu and reduces the corrosion rate of Cu almost by a factor of 31. (c) 2006 Elsevier B.V. All rights reserved.

}, keywords = {5-dimethylaniline) coatings, conducting polymers, Copper, Corrosion resistant coatings, cyclic voltammetry, Electrochemical polymerization, Poly(2}, issn = {0169-4332}, doi = {10.1016/j.apsusc.2006.02.007}, author = {Shinde, Vandana and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000239869200004, title = {Synthesis, characterization and catalytic properties of vanadium aluminophosphate molecular sieves VAPO-31 and VAPSO-Amr from non-aqueous media}, journal = {Applied Catalysis A-General}, volume = {310}, year = {2006}, month = {AUG}, pages = {31-39}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Vanadium samples containing aluminophosphate molecular sieve (VAPO-31) and amorphous vanadium silicoaluminophosphate (VAPSO-Amr) have been synthesized using hexamethyleneimine template from non-aqueous media for the first time. XRD and SEM analyses confirm the phase purity of the synthesized samples. FT-IR analysis suggests the incorporation of V4+ in the aluminophosphate framework. ESR, UV-vis spectroscopic, and XPS techniques and cyclicvoltametric studies confirm the incorporation of vanadium and reveal its presence in tetrahedral and square pyramidal environments in the as-synthesized samples. Cyclic voltammetry reveals the presence of two redox couples in VAPO-31. This catalyst is found to be a good oxidation catalyst. Although most of the properties of VAPO-31NA and VAPSO-Amr are similar, the latter can access more vanadium and V4+ ions. Compared to aqueous media samples, it can incorporate more vanadium especially V5+, ions and has been found to be better oxidation catalyst. The physicochemical properties also change with media. (C) 2006 Elsevier B.V. All rights reserved.

}, keywords = {cyclic voltammetry, ESR, FT-IR, MAS NMR, non-aqueous, SEM, TG/DTA, UV-Vis, VAPO-31, XPS, XRD}, issn = {0926-860X}, doi = {10.1016/j.apcata.2006.05.001}, author = {Venkatathri, N.} } @article { ISI:000250661500014, title = {All-solid-state{\textquoteright} electrochemistry of a protein-confined polymer electrolyte film}, journal = {Biochemical and Biophysical Research Communications}, volume = {364}, number = {1}, year = {2007}, month = {DEC}, pages = {86-91}, publisher = {ACADEMIC PRESS INC ELSEVIER SCIENCE}, type = {Article}, address = {525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA}, abstract = {

Interfacial redox behavior of a heme protein (hemoglobin) confined in a solid polymer electrolyte membrane, Nafion (a perfluoro sulfonic acid ionomer) is investigated using a unique {\textquoteleft}all-solid-state{\textquoteright} electrochemical methodology. The supple phase-separated structure of the polymer electrolyte membrane, with hydrophilic pools containing solvated protons and water molecules, is found to preserve the incorporated protein in its active form even in the solid-state, using UV-visible, Fluorescence (of Tryptophan and Tyrosine residues) and DRIFT (diffuse reflectance infrared Fourier transform) spectroscopy. More specifically, solid-state cyclic voltammetry and electrochemical impedance of the protein-incorporated polymer films reveal that the Fe2+-form of the entrapped protein is found to bind molecular oxygen more strongly than the native protein. In the {\textquoteleft}all-solid-state{\textquoteright} methodology, as there is no need to dip the protein-modified electrode in a liquid electrolyte (like the conventional electrochemical methods), it offers an easier means to study a number of proteins in a variety of polymer matrices (even biomimetic assemblies). In addition, the results of the present investigation could find interesting application in a variety of research disciplines, in addition to its fundamental scientific interest, including protein biotechnology, pharmaceutical and biomimetic chemistry. (C) 2007 Elsevier Inc. All rights reserved.

}, keywords = {all-solid-state, cyclic voltammetry, hemoglobin, Impedance, Nafion, redox behavior}, issn = {0006-291X}, doi = {10.1016/j.bbrc.2007.09.118}, author = {Parthasarathy, Meera and Pillai, Vijayamohanan K. and Mulla, Imtiaz S. and Shabab, Mohammed and Khan, Mohammad Islam} } @article { ISI:000246978800026, title = {Corrosion protection aspects of electrochemically synthesized poly(o-anisidine-co-o-toluidine) coatings on copper}, journal = {Electrochimica Acta}, volume = {52}, number = {19}, year = {2007}, month = {MAY}, pages = {5958-5967}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

The poly(o-anisidine-co-o-toluidine) coatings were synthesized on copper substrates by electrochemical copolymerization of o-anisidine with o-toluidine using sodium salicylate as supporting electrolyte. These coatings were characterized by cyclic voltammetry, UV-vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR) and scanning electron microscopy (SEM). The formation of the copolymer with the mixture of monomers in the aqueous sodium salicylate solution was ascertained by a critical comparison of the results obtained with the polymerization of the individual monomers, o-anisidine and o-toluidine, respectively. The corrosion protection aspects of poly(o-anisidine-co-o-toluidine) coatings to copper was investigated in aqueous 3\% NaCl solution by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results of the potentiodynamic polarization measurements and EIS studies showed that the poly(o-anisidine-co-o-toluidine) coatings provided the effective corrosion protection to copper than that of respective homopolymers. The corrosion rate is observed to depend on the feed ratio of o-toluidine used for the synthesis of the copolymer coatings. (C) 2007 Elsevier Ltd. All rights reserved.

}, keywords = {copolymer coatings, Copper, Corrosion resistant coatings, cyclic voltammetry, poly(o-anisidine-co-o-toluidine)}, issn = {0013-4686}, doi = {10.1016/j.electacta.2007.03.043}, author = {Pawar, Pritee and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000246329700015, title = {Cyclic voltammetry, electrochemical impedance and ex situ X-ray diffraction studies of electrochemical insertion and deinsertion of lithium ion into nanostructured organic-inorganic poly(3,4-ethylenedioxythiophene) based hybrids}, journal = {Journal of Electroanalytical Chemistry}, volume = {603}, number = {2}, year = {2007}, month = {MAY}, pages = {287-296}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

In this work, we discuss the electrochemical insertion and deinsertion of lithium into poly(3,4-ethylenedioxythiophene) PEDOT-V(2)O(5) nanohybrids by using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and powder ex situ X-ray diffraction (XRD) studies with special emphasis on their application potential as cathode materials for rechargeable Lithium batteries. The interlayer spacing of crystalline V(2)O(5) expands from 0.43 to 1.41 nm by the intercalation of PEDOT nanoribbons prepared by a microwave irradiation method. Cyclic voltammetry studies of PEDOT-V(2)O(5) hybrid at a slow scan rate of 0.058 mVs(-1) between 2.0-4.3 V vs. Li/ Li(+), demonstrates that structural transitions Of V(2)O(5) are suppressed and more facile intercalation features appear in terms of well-defined reversible cathodic and anodic peaks when compared to that at higher scan rate. Electrochemical Impedance studies of PEDOT-V(2)O(5) hybrid as cathode at ambient temperature with lithium metal foil as both counter and reference electrodes in 1 M LiPF(6) in a mixture of ethylene and diethylcarbonate (50:50 by volume) between the range 2.0-4.3 V reveals the usefulness of these materials. The observed capacity fading during cycling in terms of surface passivation and structural transformations is also investigated by CV, EIS and XRD analysis. (C) 2007 Elsevier B.V. All rights reserved.

}, keywords = {cyclic voltammetry, ex situ XRD studies, high capacity lithium batteries, impedance studies, nanostructured hybrid materials}, issn = {1572-6657}, doi = {10.1016/j.jelechem.2007.02.013}, author = {Murugan, A. Vadivel and Reddy, M. V. and Campet, Guy and Vijayamohanan, K.} } @article { ISI:000244210600007, title = {Poly(o-ethylaniline) coatings for stainless steel protection}, journal = {Progress In Organic Coatings}, volume = {58}, number = {1}, year = {2007}, month = {JAN}, pages = {54-63}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

The poly(o-ethylaniline) coatings were electrochemically synthesized on 304-stainless steel by using cyclic voltammetry from an aqueous salicylate medium. Cyclic voltammetry, UV-vis absorption spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy were used to characterize these coatings, which indicates that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of o-ethyaniline on 304-stainless steel. The performance of poly(o-ethylaniline) as protective coating against corrosion of 304-stainless steel in aqueous 3\% NaCl was evaluated by the open circuit potential measurements, potentiodynamic polarization technique, cyclic potentiodynamic polarization measurements and electrochemical impedance spectroscopy. The results of the potentiodynamic polarization and cyclic potentiodynamic polarization demonstrate that the poly(o-ethylaniline) coating provides excellent protection to both localized and general corrosion of 304-stainless steel. The corrosion potential was about 0.190 V more positive in aqueous 3\% NaCl for the poly(o-ethylaniline) coated steel than that of bare steel and reduces the corrosion rate of steel almost by a factor of 20. (c) 2006 Elsevier B.V. All rights reserved.

}, keywords = {Conducting polymer coatings, Corrosion resistant coatings, cyclic voltammetry, Electrochemical polymerization, poly(o-ethylaniline) coatings, stainless steel}, issn = {0300-9440}, doi = {10.1016/j.porgcoat.2006.12.001}, author = {Chaudhari, Sudeshna and Sainkar, S. R. and Patil, P. P.} } @article { ISI:000257271600056, title = {Electrochemical sensing of sulphur dioxide: a comparison using dodecanethiol and citrate capped gold nanoclusters}, journal = {Journal of Nanoscience and Nanotechnology}, volume = {8}, number = {6}, year = {2008}, month = {JUN}, pages = {3184-3190}, publisher = {AMER SCIENTIFIC PUBLISHERS}, type = {Article}, address = {26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA}, abstract = {

A comparison of cyclic voltammograms of dodecanethiol (DDT) capped Au nanoclusters (5.0 +/- 0.5 nm) and trisodium citrate (Cit) capped Au nanoclusters (similar to 10-15 nm) modified glassy carbon electrode shows a dramatic variation in the current when exposed to a small amount of sulphur dioxide. This is explained using the electrocatalytic properties of Au nanoclusters towards the oxidation of SO2, thus facilitating the fabrication of electrochemical sensors for the detection of SO2. The intrinsic redox changes observed for gold nanocluster-modified glassy carbon electrodes disappear on passing SO2, despite a dramatic current increase, which indeed scales up with the amount of dissolved SO2. Interestingly, a complete rejuvenation of the redox behavior of gold is also observed on subsequent removal of SO2 from the solution by passing pure nitrogen for 15 minutes. Further, these nanoclusters when characterized with X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) after SO2 passage reveal a variety of SO2 adsorption modes on gold surface. XP spectra also show a shift of 1.03 eV towards higher binding energy indicating a strong adsorption of SO2 gas, while FTIR gives conclusive evidence for the interaction of SO2 with gold nanoparticles.

}, keywords = {cyclic voltammetry, Fourier transform infrared spectroscopy, monolayer protected gold nanoclusters (Au-MPCs), SO2 sensor, X-ray photoelectron spectra}, issn = {1533-4880}, doi = {10.1166/jnn.2008.094}, author = {Sathe, Bhaskar R. and Risbud, Mandar S. and Mulla, Imtiaz S. and Pillai, Vijayamohanan K.} } @article { ISI:000254367800011, title = {Synthesis and corrosion protection study of poly(o-ethylaniline) coatings on copper}, journal = {Surface \& Coatings Technology}, volume = {202}, number = {12}, year = {2008}, month = {MAR}, pages = {2591-2602}, publisher = {ELSEVIER SCIENCE SA}, type = {Article}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, abstract = {

Poly(o-ethylaniline) coatings were synthesized on copper (Cu) by electrochemical polymerization of o-ethylaniline in an aqueous salicylate solution by using cyclic voltammetry. The characterization of these coatings was carried out by cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The results of these characterizations indicate that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of o-ethylaniline to generate strongly adherent and smooth poly(o-ethylaniline) coatings on Cu substrates. The performance of poly(o-ethylaniline) as protective coating against corrosion of Cu in aqueous 3\% NaCl was assessed by the potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results of these studies demonstrate that the poly(o-ethylaniline) coating has ability to protect the Cu against corrosion. The corrosion potential was about 0.078 V versus SCE more positive in aqueous 3\% NaCl for the poly(o-ethylanitine) coated Cu (similar to 15 mu m thick) than that of uncoated Cu and reduces the corrosion rate of Cu almost by a factor of 70. (C) 2007 Elsevier B.V. All rights reserved.

}, keywords = {conducting polymers, Copper, Corrosion resistant coatings, cyclic voltammetry, Electrochemical polymerization, poly(o-ethylaniline) coatings}, issn = {0257-8972}, doi = {10.1016/j.surfcoat.2007.09.025}, author = {Shinde, Vandana and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000259765600037, title = {Poly(o-anisidine) coatings on brass: synthesis, characterization and corrosion protection}, journal = {Current Applied Physics}, volume = {9}, number = {1}, year = {2009}, month = {JAN}, pages = {206-218}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Poly(o-anisidine) (POA) coatings were synthesized on brass by electrochemical polymerization of o-anisidine in aqueous salicylate solution by using cyclic voltammetry. These coatings were characterized by cyclic voltammetry, UV-visible absorption spectroscopy., Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The corrosion protection aspects of POA coatings on brass in aqueous 3\% NaCl solution were investigated by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarization measurements show that the POA coating has ability to protect the brass against corrosion. The corrosion potential was about 0.204 V versus SCE more positive for the POA coated brass than that of uncoated brass and reduces the corrosion rate of brass almost by a factor of 800. The corrosion behavior of the POA coatings was also investigated by EIS through immersion tests performed In aqueous 3\% NaCl solution. The evolution of the impedance parameters with the immersion time was studied and the results Show that the POA acts as a protective coating on brass against corrosion in 3\% NaCl solution. The water uptake and delamination area were also determined to further support the corrosion protection performance of the POA coating. (C) 2008 Elsevier B.V. All rights reserved.

}, keywords = {brass, conducting polymers, Corrosion resistant coatings, cyclic voltammetry, Electrochemical impedance spectroscopy, Electrochemical polymerization, poly(o-anisidine)}, issn = {1567-1739}, doi = {10.1016/j.cap.2008.01.012}, author = {Chaudhari, Sudeshna and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000275769700022, title = {Crystal structure, NMR and theoretical investigations on 2-(o-hydroxy-anilino)-1,4-napthoquinone}, journal = {Journal of Molecular Structure}, volume = {966}, number = {1-3}, year = {2010}, month = {MAR}, pages = {144-151}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

Crystal structure, (1)H NMR and cyclic voltammetric investigations of 2-(o-hydroxy-anilino)-1,4-napthoquinone (HAN), resulting from coupling of aminophenol with 2-hydroxy-1,4-napthoquinone, have been carried out. X-ray structure reveals that the HAN ligand crystallizes in orthorhombic space group Pca2(1) with Z = 4. forming a chain via inter-molecular O2 center dot center dot center dot H1A-O1 and C15-H15 center dot center dot center dot O3 interactions. Both (1)H NMR and cyclic voltammetry experiments suggest the titled ligand is associated and exists as dinner in d(6)-DMSO while the monomer has been predicted in CDCl(3) solution. Density functional calculations can be utilized to gauge the strength of hydrogen-bonded interactions from the (1)H chemical shifts in the NMR spectra. Self-consistent reaction field (SCRF) calculations further support the inferences drawn from cyclic voltammetry experiments. (C) 2009 Elsevier B.V. All rights reserved.

}, keywords = {(1)H NMR, cyclic voltammetry, Density functional, hydrogen bonding, Napthoquinone}, issn = {0022-2860}, doi = {10.1016/j.molstruc.2009.12.029}, author = {Feizi, Nourollah and Pinjari, Rahul V. and Gejji, Shridhar P. and Sayyed, Fareed B. and Gonnade, Rajesh G. and Rane, Sandhya Y.} } @article { ISI:000273175100013, title = {Synthesis and corrosion protection aspects of poly(o-toluidine)/CdO nanoparticle composite coatings on mild steel}, journal = {Journal of Coatings Technology and Research}, volume = {7}, number = {1}, year = {2010}, month = {JAN}, pages = {119-129}, publisher = {SPRINGER}, address = {233 SPRING ST, NEW YORK, NY 10013 USA}, abstract = {

This study examines the possibility of using poly(o-toluidine)/CdO (POT-CdO) nanoparticle composite coating for corrosion protection of mild steel in chloride environment. The POT-CdO nanoparticle composite coating was synthesized on mild steel from aqueous tartrate solution containing CdO-nanoparticles (size similar to 18 nm) by using cyclic voltammetry. These coatings were characterized by cyclic voltammetry, UV-Visible absorption spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction measurements. The corrosion protection aspects of the resulting POT-CdO nanocomposite structure were investigated in aqueous 3\% NaCl solution by potentiodynamic polarization technique and electrochemical impedance spectroscopy. The results of these investigations reveal that the POT-CdO nanoparticle composite acts as a protective coating on mild steel and reduces the corrosion rate of mild steel almost by factor of 70.

}, keywords = {CdO, Conducting polymer coatings, Corrosion resistant coatings, cyclic voltammetry, Electrochemical polymerization, Mild steel, Nanocomposites, Poly(o-toluidine)}, issn = {1547-0091}, doi = {10.1007/s11998-008-9160-2}, author = {Chaudhari, Sudeshna and Gaikwad, A. B. and Patil, P. P.} } @article { ISI:000357617800013, title = {Reduced graphene oxide composite with oxidizable manganese/cobalt mixed oxide for p-cresol oxidation by using molecular oxygen}, journal = {ChemPlusChem}, volume = {80}, number = {7}, year = {2015}, month = {JUL}, pages = {1164-1169}, publisher = {WILEY-V C H VERLAG GMBH}, type = {Article}, address = {BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY}, abstract = {

A composite of graphene oxide (GO) with mixed oxide (MnCo) was prepared by using a solvothermal method. During the synthesis, both the reduction of GO and growth of metal oxides took place simultaneously. The as-prepared composite material was highly selective for the liquid-phase oxidation of p-cresol to form p-hydroxybenzaldehyde in 71\% yield within 1h. The composite material was characterised by SEM, X-ray photoelectron spectroscopy, high-resolution TEM and cyclic voltammetry (CV). A CV study revealed that the increase in the redox potential of the mixed oxide after being supported on GO, led to its higher activity of the catalyst for the oxidation reaction. The stability of the catalyst under the reaction conditions was studied by its successful reuse in three cycles.

}, keywords = {cyclic voltammetry, graphene, Oxidation, supported catalysts, transition metals}, issn = {2192-6506}, doi = {10.1002/cplu.201500053}, author = {Jha, Ajay and Patil, Sagar H. and Solanki, Bhanu P. and Ribeiro, Ana P. C. and Castro, Carlos A. N. and Patil, Kashinath R. and Coronas, Alberto and Rode, Chandrashekhar V.} } @article {43972, title = {Preparation of MgO supported platinum nanoparticle catalyst using toluene dispersed platinum sol}, journal = {Applied Surface Science}, volume = {418}, year = {2017}, month = {OCT}, pages = {874-91}, type = {Journal Article}, abstract = {

An effective way of anchoring Pt nanoparticles on MgO using toluene dispersed platinum nanoparticles (Pt-NPs) as one of the ingredient is demonstrated. The usage of particles dispersed in toluene allows the retention of size and size distribution of preformed Pt-NPs even after deposition on MgO support with high active surface area, which is crucial for heterogeneous catalysis. The catalyst thus prepared, displayed selective hydrogenation of cinnamaldehyde to cinnamyl alcohol with high turn on frequency (TOF - 105 h-1) with respect to the total Pt content. We attribute this efficient catalytic performance to the uniform distribution and deposition of Pt on the active MgO support and its better accessible surface as evidenced by the cyclic-voltammetry results.

}, keywords = {catalysis, Catalysts, cyclic voltammetry, Deposition, Magnesia, Nanoparticles, sol-gel process}, doi = {10.1016/j.apsusc.2016.12.058}, author = {Seth, J. and Nepak, D. and Chaudhari, V. R. and Prasad, B.L.V.} } @article {43792, title = {Synthesis, characterization and electrochemical investigations of mixed-ligand copper(II)-organic supramolecular frameworks}, journal = {Journal of Molecular Structure}, volume = {1147}, year = {2017}, month = {NOV}, pages = {549-557}, type = {Article}, abstract = {

Two mixed-ligand copper(II)-organic coordination compounds with 5,5{\textquoteright}-dimethyl-2,2{\textquoteright}-bipyridine (5,5{\textquoteright}-Me(2)bpy) as a primary ligand while aliphatic malonate (Hmal) and aromatic 2-hydroxynicotinate (2-OHNA) as secondary ligands, were synthesized. These complexes are formulated as: [Cu(Hmal)(5,5{\textquoteright}-Me(2)bPY)(H2O)](ClO4) 1 and [Cu-2(2-OHNA)(2)(5,5{\textquoteright}-Me(2)bpy)(2)(NO3)KNO3) 2. These two complexes were structurally characterized by single crystal X-ray diffraction analysis. Characterization was further supported by powder X-ray diffraction analysis, elemental analyses, FT-IR, FAB-MASS and TGA, DSC studies. Cyclic voltammetric and UV-visible spectral studies of these two complexes have also been done. The electrochemical studies of complex 1 in DMSO and DMF have shown that this complex undergoes quasi reversible diffusion-controlled one-electron transfer reaction without any chemical complication while complex 2 in DMSO undergoes quasi-reversible diffusion-controlled one electron transfer reaction, following EC mechanism. The electrochemical behaviour of complex 2 in DMF is complicated probably due to presence of more than one species in solution phase. (C) 2017 Elsevier B.V. All rights reserved.

}, keywords = {2 {\textquoteright}-bipyridine, 3, 5, 5 {\textquoteright}-dimethyl-2, 5-Tricarboxylic acid, Benzene-1, classification, Co-ordination-Compounds, Crystal-structures, cyclic voltammetry, magnetic properties, metal organic framework, Mixed-ligand complex, pi-pi stacking interaction, Polymers, Secondery Building Unit, Structural data, Supramolecular framework, Ternare Komplexe, X-ray diffraction}, issn = {0022-2860}, doi = {10.1016/j.molstruc.2017.06.128}, author = {Singh, Sandeep K. and Srivastava, Ashish Kumar and Srivastava, Krishna and Banerjee, Rahul and Prasad, Jagdish} } @article {46874, title = {Mechanistic aspects of methanol electro-oxidation reaction through cyclic voltammetry: is it correct to blame carbon monoxide for catalyst poisoning?}, journal = {Energy Technology}, volume = {8}, year = {2020}, month = {MAY}, pages = {1900955}, type = {Article}, abstract = {

The mechanism of the methanol oxidation reaction is revisited using systematic cyclic voltammetric studies. These studies clearly indicate that the peak during the cathodic scan belongs mainly to electro-oxidation of the carbon monoxide, and that only a fraction of this carbon monoxide remains adsorbed on the electrode, contrary to what previous reports suggested. More details can be found in article number by Bhagavatula L. V. Prasad and co-workers.

}, keywords = {carbon monoxide, cyclic voltammetry, electrocatalysts, electrode poisoning, Methanol oxidation}, issn = {2194-4288}, doi = {10.1002/ente.201900955}, author = {Deshpande, Pooja S. and Chaudhari, Vijay R. and Prasad, Bhagavatula L. V.} } @article {48136, title = {Synthesis, characterization and single crystal x-ray structures of trifluroacetylacetonate copper(ii) complexes}, journal = {Journal of Chemical Crystallography}, volume = {52}, year = {2022}, month = {DEC}, pages = {525-533}, type = {Article}, abstract = {

{Three Cu(II) complexes of 1,1,1-trifluoroacetylacetonate, viz. [Cu(TFACAC)(2)(MeOH)] (1), [Cu(TFACAC)(2)(py)] (2) and [Cu(TFACAC)(2)(DABCO)] (3) were synthesized and characterized by elemental analysis, IR, UV-Visible spectroscopy and cyclic voltammetry. Structures of complexes 1-3 were established by single crystal X-ray diffraction wherein 1 and 2 adapt square pyramidal geometry. Complex 1 crystallizes in triclinic space group P-(1), with a = 8.5059(6) angstrom

}, keywords = {Copper(II) complexes, crystal structure, cyclic voltammetry, DABCO, Pyridine, Trifluoroacetylacetone}, issn = {1074-1542}, doi = {10.1007/s10870-022-00937-1}, author = {Kumari, Neha and Bahadur, Vir and Butcher, Raymond J. and Kumbhar, Anupa A.} } @article {48413, title = {Ultrahigh capacitance of NiCo2O4/CeO2 mixed metal oxide material for supercapacitor applications}, journal = {Journal of Alloys and Compounds}, volume = {899}, year = {2022}, month = {APR}, pages = {163312}, type = {Article}, abstract = {

Pertaining to research on energy consumption and energy storage systems, new and efficient mixed metal oxides of NiCo2O4/CeO2 as pseudo-capacitor materials have been successfully prepared by sol-gel combustion method. The synthesized unique spinel nanomaterials have been analyzed for structural and morphological characterization by FT-IR, XRD, XPS and electron microscopy techniques. The mesoporous structure and large specific surface area of the synthesized nanomaterials provide an easy channel for ion mobility rendering an effortless redox process at the electrode electrolyte interface. As a consequence, it is observed that NiCo2O4 mixed with 10\% of CeO2 exhibits an excellent specific capacitance of 1355 Fg(-1) at 5 Ag-1 along with a high cycling stability with only 4.7\% capacity loss at the end of 6000 cycles at a charge-discharge current density of 10 Ag-1. The results obtained are in par with some of the recent electrode materials used for supercapacitors suggesting the possible employment of NiCo2O4/CeO2 mixed metal oxides in energy storage applications. (C) 2021 Elsevier B.V. All rights reserved.

}, keywords = {Charge-discharge, cyclic voltammetry, NiCo2O4/CeO2, specific capacitance, supercapacitor}, issn = {0925-8388}, doi = {10.1016/j.jallcom.2021.163312}, author = {Santhosh, G. and Nayaka, G. P. and Bhatt, Aarti S.} }