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Precisely quantified catalyst based on in situ growth of Cu2O nanoparticles on a graphene 3D network for highly sensitive glucose sensor
Wang, Mingjun1,4; Song, Xuefen1,2,3; Song, Bo4; Liu, Jianlin1; Hu, Chenguo1; Wei, Dapeng2,3; Wong, Ching-Ping4
2017-10-01
摘要Due to the fact that catalytic oxidation of glucose only takes place on the surface of catalysts, increasing the specific surface of catalysts is an effective way to achieve high catalytic performance. Herein, we have developed an effective and extremely simple method to prepare a highly sensitive and enzyme-free glucose sensor with precisely quantified catalyst, which is prepared by in situ growth of Cu2O nanoparticles on a hierarchical graphene 3D network grown on carbon paper (G3DN/CP). The sensitivity, detection limit, response time and linear range of the sensor are (2.31 +/- 0.03) x 10(3) mu A mM(-1) cm(-2), 0.14 +/- 0.01 mu M, 1.6 s and 0.48-1813 mu M, respectively. In addition, the sensor can retain 95.5% of its initial sensitivity even after 10 days. Specifically, due to the precise quantification of Cu2O nanoparticles deposited on G3DN, it is beneficial to mass production and precisely controlling the performance of the glucose sensor devices for public healthcare and industry. This approach could be used for other electrochemical sensors. (C) 2017 Elsevier B.V. All rights reserved.
关键词Glucose sensor Quantified catalyst Three-dimensional graphene Cu2O
DOI10.1016/j.snb.2017,04.125
发表期刊SENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
卷号250页码:333-341
通讯作者Hu, CG (reprint author), Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China. ; Wei, DP (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China.
收录类别SCI
WOS记录号WOS:000404424100040
语种英语