caa a22 4500 445880139 CHVBK 20180317145540.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00604-011-0688-y doi (NATIONALLICENCE)springer-10.1007/s00604-011-0688-y Electrodeposition of cobalt oxide nanoparticles on carbon nanotubes, and their electrocatalytic properties for nitrite electrooxidation [Elektronische Daten] [Zuchao Meng, Bin Liu, Jianbin Zheng, Qinglin Sheng, Hongfang Zhang] We describe a modified glassy carbon electrode (GCE) for the sensitive determination of nitrite in waste water samples. The GCE was modified by electrodeposition of cobalt oxide nanoparticles on multi-walled carbon nanotubes (MWCNTs) deposited on a conventional GCE. Scanning electron microscopy and electrochemical techniques were used for the characterization of the composite material which is very uniform and forms a kind of nanoporous structure. Electrochemical experiments showed that the modified electrode exhibited excellent electrocatalytic properties for nitrite. Amperometry revealed a good linear relationship between peak current and nitrate concentration in the 0.5 to 250μM range with a detection limit of 0.3μM (S/N = 3). The method has been applied to the amperometric detection of nitrite. The modified electrode displays good storage stability, reproducibility, and selectivity for a promising practical application. Figure The dense and entangled CoOx/MWCNTs nanocomposite showed a three-dimensional nanoporous structure. The three-dimensional nanoporous structure provided ample space to allow fast mass transport of ions through the electrolyte/electrode interface as well as a conductive network for enhancing electronic conductivity which was favorable to the catalytic application of CoOx. Springer-Verlag, 2011 Amperometric sensor nationallicence Electrocatalytic oxidation nationallicence Nitrite nationallicence Cobalt oxide nationallicence Meng Zuchao Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut Liu Bin Department of Chemistry, Xianyang Normal University, 712000, Xianyang, Shaanxi, China aut Zheng Jianbin Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut Sheng Qinglin Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut Zhang Hongfang Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 251-257 0026-3672 175:3-4<251 2011 175 604 https://doi.org/10.1007/s00604-011-0688-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0688-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Meng Zuchao Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- Liu Bin Department of Chemistry, Xianyang Normal University, 712000, Xianyang, Shaanxi, China aut NATIONALLICENCE 700 1- Zheng Jianbin Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- Sheng Qinglin Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut NATIONALLICENCE 700 1- Zhang Hongfang Institute of Analytical Science, Shaanxi Provincial Key Labortary of Electroanalytical Chemistry, Northwest University, 710069, Xi'an, Shaanxi, China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 175/3-4(2011-12-01), 251-257 0026-3672 175:3-4<251 2011 175 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer