Electrochemical detection of hydroquinone by graphene and Pt-graphene hybrid material synthesized through a microwave-assisted chemical reduction process |
| |
Authors: | Jing Li Chun-yan Liu Chao Cheng |
| |
Affiliation: | aKey Laboratory of Photochemical Conversion and Optoelectronic Materials of Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Zhongguancun, Beijing 100190, PR China;bGraduate School of the Chinese Academy of Sciences, Beijing 100806, PR China |
| |
Abstract: | We have synthesized graphene and Pt-graphene hybrid material by a microwave-assisted chemical reduction process and evaluated their application as electrode materials towards the electrochemical detection of hydroquinone. Graphene modified glass carbon electrode (GCE) showed a good performance for detecting hydroquinone due to the unique properties of graphene which increased the active surface area of the electrode and accelerated the electron transfer. The linear detection range of hydroquinone concentration was 20–115 μM with a sensitivity of 1.38 μA μM−1 cm−2; the detection limit was estimated to be 12 μM (S/N = 3). The electrocatalytic activity of the Pt-graphene modified GCE was further improved due to the enhanced electron transfer and the linear detection range was 20–145 μM with the sensitivity of 3.56 μA μM−1 cm−2, detection limit 6 μM (S/N = 3). |
| |
Keywords: | Hydroquinone Graphene Pt-graphene hybrid material Electrochemical detection Differential pulse voltammetry |
本文献已被 ScienceDirect 等数据库收录! |