Electrochemical sensor for detecting both oxidizing and reducing compounds based on poly(ethyleneimine)/phosphotungstic acid multilayer film modified electrode
作者： Jie Xu , Shimei Xu , Shun Feng , Yanjun Hao , Jide Wang
DOI: 10.1016/J.ELECTACTA.2015.06.058
关键词: Redox 、 Detection limit 、 Polyelectrolyte 、 Phosphotungstic acid 、 Materials science 、 Inorganic chemistry 、 Electrode 、 Ascorbic acid 、 Electrochemical gas sensor 、 Oxidizing agent
摘要: Abstract A novel electrochemical sensor was prepared by alternatively deposition of anionic phosphotungstic acid (PTA) and polyelectrolyte poly(ethyleneimine) (PEI) on ITO glass through Layer-by-Layer assembly technique. Ascorbic H 2 O were used as model drugs to investigate the electrocatalytic behavior PEI/PTA multilayer film modified electrode in 0.1 M NaAc-HAc buffer (pH 5.0), respectively. The results showed that corresponding current response redox peak increased linearly with increase concentration them certain ranges. standard addition method at three levels testified as-prepared can be determine both oxidizing reducing compounds low detection limits high recoveries. And more, still remain 96% its initial activity after 100 cycles CV scan. further ascorbic commercially available fruit drinks, validated performance liquid chromatography, it found no statistically significant difference existed between two methods. Compared previous reports, sensitivity, good stability reusability.
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sci-hub.se 参考文章(31)
David Ingersoll, Pawel J. Kulesza, Larry R. Faulkner, Polyoxometallate‐Based Layered Composite Films on Electrodes Preparation Through Alternate Immersions in Modification Solutions Journal of The Electrochemical Society. ,vol. 141, pp. 140- 147 ,(1994) , 10.1149/1.2054673
Yonghui Wang, Xinlong Wang, Changwen Hu, Chunshan Shi, Photoluminescent organic–inorganic composite films layer-by-layer self-assembled from the rare-earth-containing polyoxometalate Na9[EuW10O36] and poly(allylamine hydrochloride) Journal of Materials Chemistry. ,vol. 12, pp. 703- 707 ,(2002) , 10.1039/B106749D
Xin Yao, MinLi Yang, Yunfeng Wang, Zhongbo Hu, Study of the ferrocenylalkanethiol self-assembled monolayers by electrochemical surface plasmon resonance Sensors and Actuators B-chemical. ,vol. 122, pp. 351- 356 ,(2007) , 10.1016/J.SNB.2006.05.037
V Ramani, H.R Kunz, J.M Fenton, Investigation of Nafion ® /HPA composite membranes for high temperature/low relative humidity PEMFC operation Journal of Membrane Science. ,vol. 232, pp. 31- 44 ,(2004) , 10.1016/J.MEMSCI.2003.11.016
R. Holze, C.M.A. Brett, A.M.O. Brett: Electrochemistry — Principles, methods and applications, OXford University Press, Oxford, ISBN 0-19-855388-9, 1993, 427 pages, £ 25.00 Berichte der Bunsengesellschaft für physikalische Chemie. ,vol. 98, pp. 1350- 1350 ,(1994) , 10.1002/BBPC.19940981033
Dhanusuraman Ragupathy, Anantha Iyengar Gopalan, Kwang-Pill Lee, Layer-by-layer electrochemical assembly of poly(diphenylamine)/phosphotungstic acid as ascorbic acid sensor Microchimica Acta. ,vol. 166, pp. 303- 310 ,(2009) , 10.1007/S00604-009-0201-Z
Shengyong Zhai, Shaoyun Gong, Junguang Jiang, Shaojun Dong, Jinghong Li, Assembly of multilayer films containing iron(III)-substituted Dawson-type heteropolyanions and its electrocatalytic properties: cyclic voltammetry, electrochemical impedance spectroscopy and UV-Vis spectrometry Analytica Chimica Acta. ,vol. 486, pp. 85- 92 ,(2003) , 10.1016/S0003-2670(03)00424-0
Min Jiang, Enbo Wang, Gang Wei, Lin Xu, Zhuang Li, Photochromic inorganic-organic multilayer films based on polyoxometalates and poly(ethylenimine). Journal of Colloid and Interface Science. ,vol. 275, pp. 596- 600 ,(2004) , 10.1016/J.JCIS.2004.02.072
Wenjia An, Yunfeng Qiu, Guanggang Gao, Lin Xu, Wenju Wang, Electrochromic ultra-thin films based on cerium polyoxometalate Journal of Materials Chemistry. ,vol. 14, pp. 2024- 2029 ,(2004) , 10.1039/B400021H