Electrochemical Behavior and Amperometric Detection of 4‐Chlorophenol on Nano‐Au Thin Films Modified Glassy Carbon Electrode |
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| Authors: | Cuicui Qiu Xiaoqiang Dong Houyi Ma Shifeng Hou Jie Yang |
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| Affiliation: | 1. Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.?R. China;2. Sinopec Research Institute of Petroleum Engineering, Beijing 100101, P.?R. China;3. Department of Chemistry and Biochemistry, Montclair State University, Montclair, NJ 07043, USA;4. Bio‐nanotechnology and Medical Engineering Institute, Jining Medical University, Jining 272067, P.?R. China |
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| Abstract: | An amperometric sensor based on nano‐Au thin films was fabricated, by means of which a fast response to 4‐chlorophenol (4‐CP) can be achieved in the range of mM concentrations. The nanostructured Au thin film was prepared on glassy carbon electrodes by a template‐free, double‐potential step electrodeposition technique. Its structural feature can be controlled well by adjusting the deposition time. The amperometric detection of 4‐CP was performed at +0.85 V with a linear detection range from 0.2 to 4.8 mM and a detection limit of 0.11 mM (S/N=3). Besides, the effect of concentrations on the electrochemical behavior of 4‐CP on the Au thin film was investigated by linear sweep voltammetry, differential pulse voltammetry and electrochemical impedance spectroscopy. |
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| Keywords: | Amperometric detection 4‐Chlorophenol Electrochemistry Electrooxidation Gold nanostructures |
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