Novel NO2- Sensor Using PW12O403-/Chitosan-Graphene Nanocomposites/Cysteamine/Gold Electrode

被引：5
|
作者：
Li, Xia [1 ]
Wei, Changting [1 ]
Song, Yonghai [1 ]
Zhu, Haozhi [1 ]
Chen, Shouhui [1 ]
Li, Ping [1 ]
Sun, Lanlan [2 ]
Wang, Li [1 ]
机构：
[1] Jiangxi Normal Univ, Key Lab Funct Small Organ Mol, Minist Educ, Coll Chem & Chem Engn, Nanchang 330022, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun, Peoples R China
来源：
ENVIRONMENTAL ENGINEERING SCIENCE | 2015年 / 32卷 / 03期
基金：
中国国家自然科学基金;
关键词：
PW12O403-; electrochemistry; sensor; graphene; NO2-; NITRITE; ACID; ELECTROCHEMISTRY; FABRICATION; REDUCTION; FILM;
D O I：
10.1089/ees.2013.0260
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A novel nitrite (NO2-) sensor was fabricated by electrodepositing phosphotungstic acid (PW12O403-) on chitosan (CHIT)-graphene nanocomposites modified cysteamine/gold (Au) electrode. Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy were used to study the CHIT-graphene nanocomposites and the PW12O403-/CHIT-graphene/cysteamine/Au electrode. Cyclic voltammograms and chronoamperometric were used to evaluate electrochemical and electrocatalytic properties of the PW12O403-/CHIT-graphene/cysteamine/Au electrode. Electrochemical results showed that the PW12O403-/CHIT-graphene/cysteamine/Au electrode exhibited good electrochemical behaviors and electrocatalytic performance toward the reduction of NO2-. Electrocatalytic performance can be ascribed to large specific surface area and good conductivity of the CHIT-graphene nanocomposites and good electrocatalytic activity of PW12O403-. The sensor showed quick amperometric response, low detection limit, wide linear range, high sensitivity, high stability, and good reproducibility. Analytical performance suggests that it is possible to be a potential candidate for routine NO2- analysis.
引用
收藏
页码：185 / 192
页数：8
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