%0 Journal Article
%T Effect of Sb dopant amount on the structure and electrocatalytic capability of Ti/Sb-SnO2 electrodes in the oxidation of 4-chlorophenol
%A KONG Jiang-tao
%A SHI Shao-yuan
%A ZHU Xiu-ping
%A NI Jin-ren
%A <br>KONG Jiang-tao
%A SHI Shao-yuan
%A ZHU Xiu-ping
%A NI Jin-ren
%J 环境科学学报(英文版)
%D 2007
%I 
%X Ti/Sb-SnO2 anodes were prepared by thermal decomposition to examine the influence of the amount of Sb dopant on the structure and electrocatalytic capability of the electrodes in the oxidation of 4-chlorophenol. The physicochemical properties of the Sb-SnO2 coating were markedly influenced by different amounts of Sb dopant. The electrodes, which contained 5% Sb dopant in the coating, presented a much more homogenous surface and much smaller mud-cracks, compared with Ti/Sb-SnO2 electrodes containing 10% or 15% Sb dopant, which exibited larger mud cracks and pores on the surface. However, the main microstructure remained unchanged with the addition of the Sb dopant. No new crystal phase was observed by X-ray diffraction (XRD). The electrochemical oxidation of 4-chlorophenol on the Ti/SnO2 electrode with 5% Sb dopant was inclined to electrochemical combustion; while for those containing more Sb dopant, intermediate species were accumulated. The electrodes with 5% Sb dopant showed the highest efficiency in the bulk electrolysis of 4-chlorophenol at a current density of 20 mA/cm2 for 180 min; and the removal rates of 4-chlorophenol and COD were 51.0% and 48.9%, respectively.
%K 4-chlorophenol
%K cyclic voltammogram
%K electrochemical oxidation
%K Sb dopant
%K Ti/Sb-SnO2 electrode
%K capability
%K electrocatalytic
%K microstructure
%K dopant
%K Effect
%K removal
%K rates
%K efficiency
%K bulk
%K electrolysis
%K current density
%K intermediate
%K species
%K accumulated
%K electrode
%K electrochemical oxidation
%K combustion
%K crystal
%K phase
%K diffraction<br>4-氯酚
%K 循环伏安图
%K 电气化学氧化
%K 锑掺杂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=CCA380B04FEA4533C8F50D91D3D843C6&yid=A732AF04DDA03BB3&vid=2A8D03AD8076A2E3&iid=708DD6B15D2464E8&sid=41685CA5511D97F7&eid=2B78D85EBFEED708&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=33