The graphene/polypyrrole/chitosan-modified glassy carbon electrode for electrochemical nitrite detection

被引：32
|
作者：
Xiao, Qi [1 ]
Feng, Mengmeng [1 ]
Liu, Yi [1 ]
Lu, Shuangyan [1 ]
He, Yingzi [1 ]
Huang, Shan [1 ]
机构：
[1] Guangxi Teachers Educ Univ, Coll Chem & Mat Sci, Nanning 530001, Peoples R China
来源：
IONICS | 2018年 / 24卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Carboxyl graphene; Polypyrrole; Chitosan; Nitrite determination; Differential pulse voltammetry; REDUCED GRAPHENE OXIDE; FLOW-INJECTION ANALYSIS; VOLTAMMETRIC DETERMINATION; URIC-ACID; SENSOR; BIOSENSOR; NANOPARTICLES; DNA; NANOCOMPOSITE; POLYPYRROLE;
D O I：
10.1007/s11581-017-2247-y
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A sensitive and selective electrochemical sensor based on carboxyl graphene (CG), polypyrrole (PPy), and chitosan (CS) nanocomposite-modified glassy carbon electrode (GCE) has been developed for nitrite determination. The electrochemical performances of CG/PPy/CS/GCE were characterized by cyclic voltammetry and electrochemical impedance spectroscopy. Under the optimum experimental conditions, CG/PPy/CS/GCE exhibited excellent differential pulse voltammetry (DPV) response of nitrite. A linear relationship between DPV peak current and the concentration of nitrite was obtained in the range of 0.2 to 1000 mu M. The limit of detection of nitrite was estimated to be 0.02 mu M. Using such modified electrodes, our method is quite reproducible for nitrite determination, even for real water samples.
引用
收藏
页码：845 / 859
页数：15
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