期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 252, 期 -, 页码 1187-1193出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.07.147
关键词
Carbon cloth; Electrochemical sensor; Glucose; Au nanoparticles; Polyaniline
资金
- National Natural Science Foundation of China [21465014, 21465015, 21665012]
- Natural Science Foundation of Jiangxi Province [20143ACB21016]
- Ministry of Education [20133604110002]
- Jiangxi Educational Committee [KJLD14023]
Herein, a new flexible nonenzymatic glucose electrochemical sensor was constructed by using flexible Au nanoparticles (AuNPs)/polyaniline (PANI)/carbon cloth (CC) integrated electrode. The PANI was firstly grown on flexible CC electrode surface vertically to form PANI arrays with height of about 200 nm and diameter of about 100 nm as a dispersing and binding agent. Then a large number of 20-nm sized AuNPs with good catalytic activity were electrodeposited on the PANI/CC electrode uniformly. Electrochemical experiments demonstrated that the flexible AuNPs/PANI/CC integrated electrode possessed the ability to electrochemically catalyze the oxidation of glucose and accordingly a flexible nonenzymatic electrochemical glucose sensor was proposed. After the flexible AuNPs/PANI/CC integrated electrode was bent for 300 times, its electrochemical response was not changed obviously. The flexible nonenzymatic glucose sensor showed a linear range from 10.26 mu M to 10.0 mM, a sensitivity of 150 mu A cm(-2) mM(-1) and a detection limit of 3.08 mu M (S/N =3), which was close to most nonenzymatic glucose sensors and suitable for most samples. Although the flexible nonenzymatic glucose could only be used in alkaline conditions, like most nonenzymatic sensors, it might be used instead of hard electrodes in some special cases. (C) 2017 Elsevier B.V. All rights reserved.
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