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Citation: TONG Shao-Ping, MA Chun-An, FEI Hui. Deactivation of Two Different Kinds of Anodes during the Degradation of Organics and Their Oxidative Mechanisms[J]. Acta Physico-Chimica Sinica, ;2007, 23(03): 424-428. doi: 10.3866/PKU.WHXB20070327 shu

Deactivation of Two Different Kinds of Anodes during the Degradation of Organics and Their Oxidative Mechanisms

1.

(State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, P. R. China)

Received Date: 20 July 2006
Available Online: 7 March 2007

Deactivations of two different kinds of anodes during electrochemical oxidation of p-chlorophenol (p-CP) were investigated by using electrochemical measurement, and their corresponding oxidation mechanisms were also discussed. The results indicated that p-CP could be oxidized directly on both the Pt (“I”type anode) and PTFE (polytetrafluoroethylene)-β-PbO2 (“II”type anode), however, the electro-catalytic activities of both anodes lost immediately. Electrolysis at high potential could recover the electro-catalytic activities of both anodes, and Pt needed higher potential than PTFE-β-PbO2 did. The deactivated Pt could also recover its activity by soaking it in ordinary organic solvents such as acetone, tetrahydrofuran, dimethyl sulfoxide, but deactivated PTFE-β-PbO2 could not. For Pt anode (“I”), besides the direct oxidation of p-CP, oxygen transfer reaction was the main cause for the removal of p-CP when anodic potential was higher than 2.0 V; for PTFE-β-PbO2 anode (“II”), besides the direct oxidation reaction, the oxidative reaction of hydroxyl radical became the main cause for the removal of p-CP when anodic potential was higher than 1.8 V.
- Pt;PbO2;p-chlorophenol;Polymer film;Degradation;Deactivation
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Deactivation of Two Different Kinds of Anodes during the Degradation of Organics and Their Oxidative Mechanisms

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com