高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (2): 361.

• 研究论文 • 上一篇    下一篇

氯离子对苯酚电化学氧化降解过程的影响

王璇1,黄卫民2,刘小波1,陆海彦1,林海波2   

  1. 1. 吉林大学化学学院, 长春  130012;
    2. 苏州耐思达化学科技有限公司, 苏州 215123
  • 收稿日期:2010-04-01 修回日期:2010-05-06 出版日期:2010-02-10 发布日期:2011-02-23
  • 通讯作者: 林海波 E-mail:lhb910@jlu.edu.cn
  • 基金资助:

    国家“八六三”计划项目(批准号: 2006AA06Z321)、 国家自然科学基金(批准号:   20873051)和江苏省自然科学基金(批准号:  BK2008555)资助.

Influence of Chloride Ion on Electrochemical Oxidation Degradation of Phenol

WANG Xuan1, HUANG Wei-Min1,2, LIU Xiao-Bo1, LU Hai-Yan1,2, LIN Hai-Bo1,2*   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, China;
    2. Suzhou Nistar Chemical Technology Co.  Ltd., Suzhou 215123, China
  • Received:2010-04-01 Revised:2010-05-06 Online:2010-02-10 Published:2011-02-23
  • Contact: LIN Hai-Bo E-mail:lhb910@jlu.edu.cn
  • Supported by:

    国家“八六三”计划项目(批准号: 2006AA06Z321)、 国家自然科学基金(批准号:   20873051)和江苏省自然科学基金(批准号:  BK2008555)资助.

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被引次数

10

摘要： 本文用Ti/SnO2-Sb2O5/PbO2和Ti/Ru-Ti-Sn氧化物涂层阳极研究了氯离子对苯酚电化学氧化降解过程的影响. 结果表明，在电解液中加入氯离子能提高苯酚的去除效率并完全降解. 在无氯离子存在下，有机物电化学降解主要以直接电氧化方式进行；在氯离子存在下，不仅可发生间接电化学氧化，而且也同时发生直接电氧化. 对于析氯阳极体系，如Ti/Ru-Ti-Sn阳极，主要发生有机物的间接电氧化；对于高氧超阳极体系，如Ti/PbO2阳极，有机物的间接电氧化和直接电氧化可能同时发生. 氯离子对于有机物的间接电氧化起到类似催化剂的作用，这种催化作用主要是由于氯离子在有机物氧化过程中阳极表面层和溶液本体电生成了Cl-/活性氯的氧化还原媒介.

关键词: 氯离子, 电化学氧化, 降解, 苯酚

Abstract: Influence of the presence of chloride ion as the electrolyte on electrochemical oxidation of phenol with both Ti/SnO2-Sb2O5/PbO2 and Ti/Ru-Ti-Sn oxide coating anode was investigated. The results showed that the addition of chloride ions in the electrolyte caused increase in removal efficiency, and the complete degradation of phenols pollutants. The main way of electrochemical degradation of phenol without chloride ion was direct electrochemical oxidation. It would contain both direct and indirect electrochemical oxidation during the degradation of phenol with chloride ion. It would mainly start with phenol indirect electrochemical oxidation on anode that could generate chlorine (such as Ti/Ru-Ti-Sn anode). For high oxygen evolution anode system, such as Ti/PbO2 anode, direct and indirect electrochemical oxidation of organic matter may occur at the same time. Effects of chloride ion on indirect electrochemical oxidation of organic matter is similar to the actions of catalyst, this kind of catalysis is mainly due to the generation of oxidation and reduction of the media of chloride ion and active chlorine in the surface layer and bulk solution during the process of organic oxidation.

Key words: Chloride Ion, Electrochemical oxidation, Degradation, Phenol

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