不锈钢基SnO2-CeO2电极制备及其电催化处理染料废水的研究Active stainless steel/SnO2-CeO2 anodes for pollutants oxidation prepared by thermal decomposition

J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (2): 187-192.

• Research Articles • 上一篇

不锈钢基SnO2-CeO2电极制备及其电催化处理染料废水的研究Active stainless steel/SnO2-CeO2 anodes for pollutants oxidation prepared by thermal decomposition

张建刚¹;魏云鹏²;蔡卫滨²;金广见²;魏刚³

1. 北京化工大学材料学院
2. 北京鸿浩清源科技有限公司
3. 北京化工大学材料科学与工程学院材料保护研究所

收稿日期:2008-12-19 修回日期:2009-03-19 出版日期:2010-02-28 发布日期:2010-02-28
通讯作者: 张建刚
基金资助:
国家高技术研究发展计划（863）

Active Stainless Steel/SnO₂-CeO₂ Anodes for Pollutants Oxidation Prepared by Thermal Decomposition

Jiangang Zhang¹⁾, Yunpeng Wei²⁾, Guangjian Jin²⁾, Gang Wei¹⁾

1) College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
2) Beijing Eau Tech Co., Ltd., Beijing 100101, China

Received:2008-12-19 Revised:2009-03-19 Online:2010-02-28 Published:2010-02-28
Contact: Jiangang Zhang
Supported by:
the National High-Tech Research and Development Program of China (Grant No. 280 2007AA05Z409)

摘要/Abstract

摘要：

以不锈钢为基材，采用热分解法制备了SnO2-CeO2涂层电极，研究了涂层制备的技术条件，发现溶胶组成、热处理温度等条件对涂层结构及性能有较大影响。实验表明Ce的掺杂能够改善SnO2膜的结构和催化性能，最佳的热分解温度为600℃。所制备的电极涂层结构紧密，析氧电位高(1.6V vs. SCE)，表面积大，性能稳定，电催化效率高。将该电极作为电催化阳极处理印染废水，5V电压下，电催化2 min，色度去除率达到83.00 %，COD去除率达到48.62%。电化学氧化每吨染料废水所需电耗仅为1.83 kWh.

关键词: SnO2¬-CeO2阳极, 不锈钢, 电化学氧化, 染料废水

Abstract:

Stainless steel plates were successfully coated with SnO₂-CeO₂films (SS/SnO₂-CeO₂) by brush coating with a solution of stannous chloride and cerium trichloride followed by thermal decomposition. It is proven that the properties of SnO₂ films can be evidently improved by Ce doping, and 600°C is the optimum temperature to prepare SS/SnO₂-CeO₂ anodes. The physicochemical and electrochemical properties as well as the electrocatalytic activity of the electrodes were investigated. It is found that the novel electrodes have compact microstructure, high overpotential for oxygen evolution (1.60 V vs SCE), excellent electrochemical stability, relatively low cost and excellent catalytic activity for oxidizing pollutants. An industrial dye wastewater, which is hard to be purified by using conventional chemical flocculation methods, was oxidated by employing the SS/SnO₂-CeO₂ anodes, and 83.00% of color and 48.62% of chemical oxygen demand (COD) removal was achieved under the cell voltage of 5 V within only 2 min, and the electricity consumption is only 1.83 kWh for oxidizing 1 m³ of dye wastewater.

Key words: SnO₂-CeO₂ anodes, Stainless steel, Electrochemical oxidation, Dye wastewater

张建刚魏云鹏蔡卫滨金广见魏刚. 不锈钢基SnO2-CeO2电极制备及其电催化处理染料废水的研究Active stainless steel/SnO2-CeO2 anodes for pollutants oxidation prepared by thermal decomposition[J]. J. Mater. Sci. Technol., 2010, 26(2): 187-192.

Jiangang Zhang, Yunpeng Wei, Guangjian Jin, Gang Wei. Active Stainless Steel/SnO₂-CeO₂ Anodes for Pollutants Oxidation Prepared by Thermal Decomposition[J]. J Mater Sci Technol, 2010, 26(2): 187-192.

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不锈钢基SnO2-CeO2电极制备及其电催化处理染料废水的研究Active stainless steel/SnO2-CeO2 anodes for pollutants oxidation prepared by thermal decomposition

Active Stainless Steel/SnO₂-CeO₂ Anodes for Pollutants Oxidation Prepared by Thermal Decomposition

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不锈钢基SnO2-CeO2电极制备及其电催化处理染料废水的研究Active stainless steel/SnO2-CeO2 anodes for pollutants oxidation prepared by thermal decomposition

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