01740nas a2200193   4500008004100000022001400041245005600055210005300111260009500164300001000259490000800269520107900277653002201356653001701378653001801395100002001413700002701433856008601460       2015                        eng d  a0022-459600aArsenic detection in water: YPO4:Eu3+ nanoparticles0 aArsenic detection in water YPO4Eu3 nanoparticles  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcDEC  a83-900 v2323 a<p>This work reports on the novel technique of detection of arsenic in aqueous solution utilising the luminescence properties of lanthanide doped nanomaterials. Eu3+ (5%) doped YPO(4)nanorodswere utilised for the said experiment. Co-precipitation method was used for the synthesis of the materials and characterised them with different instrumental techniques like X-ray diffraction (XRD), Infra-red (IR), UV-absorption, scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence studies. This nanoparticle can adsorb both arsenic and arsenious acids. We studied the effect of arsenic adsorption on the luminescence behaviour of the nanoparticles. Arsenic acid enhanced the luminescence intensity whereas arsenious acid quenched the luminescence. This luminescence enhancement or quenching is related with arsenic concentration. This relation of luminescence property with concentration of arsenic can be used to detect arsenic in industrial waste. (C) 2015 Elsevier Inc. All rights reserved.</p>10aArsenic detection10aLuminescence10aNanomaterials1 aGhosh, Debasish1 aLuwang, Meitram, Niraj  uhttp://library.ncl.res.in/content/arsenic-detection-water-ypo4eu3-nanoparticles-001686nas a2200217   4500008004100000022001400041245010600055210006900161260007300230300000800303490000800311520089100319653001401210653001701224653001801241653001401259653001801273100002001291700002701311856013001338       2016                        eng d  a0022-231300aSelective detection of Fe3+, Cr3+ and Cu2+ in water using highly luminescent Gd2O3:Eu3+ nanoparticles0 aSelective detection of Fe3 Cr3 and Cu2 in water using highly lum  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a1-80 v1713 a<p>Rod shaped Eu3+ doped Gd2O3 nanoparticles were synthesised by a simple wet-chemical method followed by high temperature heating at 700 degrees C. The nanoparticles were characterised by X-ray diffraction (XRD), infra-red (IR), transmission electron microscopy (TEM), x-ray photonelectron spectroscopy (XPS), photoluminescence (PL) studies and lifetime measurement. The particles show strong host sensitised luminescence in water. Luminescence in water is selectively quenched by Fe3+, Cr3+ and Cu2+ ions. This luminescence quenching phenomenon has been utilised to detect metal ions in synthetic water and environmental water samples. Results obtained by luminescence quenching for environmental water samples are in good agreement with the results obtained from inductively coupled plasma atomic emission spectroscopy (ICP-AES) study. (C) 2015 Elsevier B.V. All rights reserved.</p>10aDetection10aLuminescence10aNanoparticles10aQuenching10aSensitization1 aGhosh, Debasish1 aLuwang, Meitram, Niraj  uhttp://library.ncl.res.in/content/selective-detection-fe3-cr3-and-cu2-water-using-highly-luminescent-gd2o3eu3-nanoparticles-0