SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (12): 2622-2627.DOI: 10.1016/j.cjche.2018.08.010

• Energy, Resources and Environmental Technology • 上一篇    下一篇

Preparation optimization of multilayer-structured SnO2-Sb-Ce/Ti electrode for efficient electrocatalytic oxidation of tetracycline in water

Kun Yang1,2, Yuyu Liu1, Jiawen Liu3, Jinli Qiao2   

  1. 1 Institute of Sustainable Energy/College of Science, Shanghai University, Shanghai 200444, China;
    2 State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;
    3 Shanghai Jinyuan Senior High School, Shanghai 200333, China
  • 收稿日期:2018-07-09 修回日期:2018-08-14 出版日期:2018-12-28 发布日期:2019-01-09
  • 通讯作者: Yuyu Liu
  • 基金资助:

    Supported by the National Natural Science Foundation of China (U1510120), the International Academic Cooperation and Exchange Program of Shanghai Science and Technology Committee (14520721900).

Preparation optimization of multilayer-structured SnO2-Sb-Ce/Ti electrode for efficient electrocatalytic oxidation of tetracycline in water

Kun Yang1,2, Yuyu Liu1, Jiawen Liu3, Jinli Qiao2   

  1. 1 Institute of Sustainable Energy/College of Science, Shanghai University, Shanghai 200444, China;
    2 State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China;
    3 Shanghai Jinyuan Senior High School, Shanghai 200333, China
  • Received:2018-07-09 Revised:2018-08-14 Online:2018-12-28 Published:2019-01-09
  • Contact: Yuyu Liu
  • Supported by:

    Supported by the National Natural Science Foundation of China (U1510120), the International Academic Cooperation and Exchange Program of Shanghai Science and Technology Committee (14520721900).

摘要: In this study, electrodeposition and thermal decomposition were alternatively used for the fabrication of a series of novel multilayer-structured SnO2-Sb-Ce/Ti (SSCT) electrodes, and their physiochemical and electrochemical properties were investigated for electrochemical oxidation of tetracycline (TC) in aqueous medium. Experimentally, after the SnO2-Sb-Ce (SSC) composite was electrodeposited for 120 s on the titanium substrate in aqueous solution, the outer thermal coatings composed of SSC were synthesized by a hydrothermal method. Both influences of electrodeposition time (Ted) and thermal decomposition time (Ttd) were investigated to obtain the optimum preparation. It was found that when increasing Ted to a certain extent a longer lifetime of electrode can be achieved, which was attributed to a more solid interlayer structure. A notable SSCTTed,Ttd electrode, i.e., SSCT3,10, which was prepared through three times of 120 s' electrodeposition (Ted=3) and ten times of thermal decomposition (Ttd=10) obtained the highest oxygen evolution potential 3.141 V vs. SCE. In this selected electrode, when 10 mg·L-1 initial TC concentration was added to this wastewater, the highest color removal efficiency and mineralization rate of TC were 72.4% and 41.6%, respectively, with an applied electricity density of 20 mA·cm-2 and treatment time of 1 h. These results presented here demonstrate that the combined application of electrodeposition and thermal decomposition is effective in realization of enhanced electrocatalytic oxidation activity.

关键词: Multilayer structured electrode, Nano-hollow sphere, Antibiotics, Electro-oxidation

Abstract: In this study, electrodeposition and thermal decomposition were alternatively used for the fabrication of a series of novel multilayer-structured SnO2-Sb-Ce/Ti (SSCT) electrodes, and their physiochemical and electrochemical properties were investigated for electrochemical oxidation of tetracycline (TC) in aqueous medium. Experimentally, after the SnO2-Sb-Ce (SSC) composite was electrodeposited for 120 s on the titanium substrate in aqueous solution, the outer thermal coatings composed of SSC were synthesized by a hydrothermal method. Both influences of electrodeposition time (Ted) and thermal decomposition time (Ttd) were investigated to obtain the optimum preparation. It was found that when increasing Ted to a certain extent a longer lifetime of electrode can be achieved, which was attributed to a more solid interlayer structure. A notable SSCTTed,Ttd electrode, i.e., SSCT3,10, which was prepared through three times of 120 s' electrodeposition (Ted=3) and ten times of thermal decomposition (Ttd=10) obtained the highest oxygen evolution potential 3.141 V vs. SCE. In this selected electrode, when 10 mg·L-1 initial TC concentration was added to this wastewater, the highest color removal efficiency and mineralization rate of TC were 72.4% and 41.6%, respectively, with an applied electricity density of 20 mA·cm-2 and treatment time of 1 h. These results presented here demonstrate that the combined application of electrodeposition and thermal decomposition is effective in realization of enhanced electrocatalytic oxidation activity.

Key words: Multilayer structured electrode, Nano-hollow sphere, Antibiotics, Electro-oxidation