Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis
1
Collage of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
2
State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
3
Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem. Sun Yat-Sen, Nanjing 210014, China
*
Authors to whom correspondence should be addressed.
Electronics 2018, 7(2), 15; https://doi.org/10.3390/electronics7020015
Received: 9 December 2017 / Revised: 22 January 2018 / Accepted: 25 January 2018 / Published: 29 January 2018
Graphene ink is a commercialized product in the graphene industry with promising potential application in electronic device design. However, the limitation of the graphene ink is its low electronic performance due to the ink preparation protocol. In this work, we proposed a simple post-treatment of graphene ink coating via electrochemical oxidation. The electronic conductivity of the graphene ink coating was enhanced as expected after the treatment. The proposed electrochemical oxidation treatment also exposes the defects of graphene and triggered an electrocatalytic reaction during the sensing of paracetamol (PA). The overpotential of redox is much lower than conventional PA redox potential, which is favorable for avoiding the interference species. Under optimum conditions, the graphene ink-based electrochemical sensor could linearly detect PA from 10 to 500 micro molar (μM), with a limit of detection of 2.7 μM.
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MDPI and ACS Style
Fu, L.; Xie, K.; Zheng, Y.; Zhang, L.; Su, W. Graphene Ink Film Based Electrochemical Detector for Paracetamol Analysis. Electronics 2018, 7, 15.
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