Preparation and characterization of foam-nickel-modified electrode used in electrochemical reductive dechlorination

摘要：

In order to improve the electrocatalytic activity of the electrode used in electrochemical reductive dechlorination, palladium/polymeric pyrrole film (Sodium dodecyl sulfonate)/foam-nickle (Pd/PPy(SLS)/foam-Ni) electrode with high electrocatalytic activity was prepared by electrochemical deposition at ambient temperature, and the effects of sodium dodecyl sulfonate on the electrochemical catalytic activity were studied. The optimum preparation conditions of the Pd/PPy(SLS)/foam-Ni electrode are electrodepositing current density of 7.9 mA/cm 2 and electrodepositing time of 35 min. Cyclic voltammetry results indicate that, compared with that of Pd/PPy/foam-Ni electrode(about -150.36 mA), the hydrogen adsorption peak current value of Pd/PPy(SLS)/foam-Ni electrode is very large, about -205.24 mA. Scanning Electron Microscope (SEM) images reveal that, with the addition of anion surfactant-sodium dodecyl sulfonate, the surface of Pd/PPy(SLS)/foam-Ni electrode presents fine nanometer wire-like configuration. This configuration increased the catalytic sites of electrode surface and made a cheerful prospect of catalytic degradation capability.

关键词： Pd/PPy(SLS)/foam-Ni electrode anion surfactant cyclic voltammetry scanning electron microscope

作者: Zhirong Sun Hui Ge Ming Gao Yongzhen Peng

作者单位: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）