A novel electrochemical sensor for chlorophenols based on the enhancement effect of Al-doped mesoporous cellular foam

作者：Ya, Yu^*; Jiang, Cuiwen; Yan, Feiyan; Xie, Liping; Li, Tao; Wang, Yanli; Wei, Liang^*

来源：Journal of Electroanalytical Chemistry, 2018, 808: 107-113.

DOI：10.1016/j.jelechem.2017.11.074

• Al-doped mesoporous cellular foam
• Chlorophenols
• Pentachlorophenol
• Modified electrode
• Electrochemical sensor

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).

• 出版日期2018-1-1
• 单位南宁师范大学; 广西壮族自治区农业科学院