A novel electrochemical sensor for chlorophenols based on the enhancement effect of Al-doped mesoporous cellular foam
文献类型： 外文期刊
作者： Ya, Yu 1 ; Jiang, Cuiwen 1 ; Yan, Feiyan 1 ; Xie, Liping 1 ; Li, Tao 1 ; Wang, Yanli 1 ; Wei, Liang 2 ;
作者机构： 1.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China
2.Guangxi Teachers Educ Univ, Coll Chem & Life Sci, Nanning 530001, Peoples R China
关键词： Al-doped mesoporous cellular foam;Chlorophenols;Pentachlorophenol;Modified electrode;Electrochemical sensor
期刊名称：JOURNAL OF ELECTROANALYTICAL CHEMISTRY （ 影响因子：4.464； 五年影响因子：4.058 ）
ISSN： 1572-6657
年卷期： 2018 年 808 卷
页码：
收录情况： SCI
摘要： Al-doped mesoporous cellular foam (Al-MCF) was prepared and characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, nitrogen adsorption-desorption isotherms and pore size distribution plots. An Al-MCF modified carbon paste electrode (Al-MCF/CPE) was developed, and both cyclic voltammetry and electrochemical impedance spectroscopy were employed to study the electrochemical properties of the Al-MCF/CPE. The electrochemical behaviors of pentachlorophenol (PCP) at different electrodes were investigated by cyclic voltammetry. Compared to bare CPE and mesoporous cellular foam (MCF) modified CPE (MCF/CPE), the Al-MCF/CPE showed a stronger enhancement effect on the electrochemical oxidation of PCP. Consequently, the determination of PCP was achieved via a convenient electrochemical method. Under optimal conditions, the oxidation peak current was linearly proportional to PCP concentration in the range of 0.10-5.0 mg L-1, while the detection limit was 0.080 mg L-1 (signal-to-noise ratio = 3). The proposed method was found to be a convenient way for the determination of the total amount of chlorophenols (CPs).
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