沉淀剂对稀土Gd掺杂SnO_2/Ti涂层阳极性能的影响  

Effect of precipitator on electrocatalysis of rare earth Gd doping SnO_2/Ti electrode

作　　者：王静[1] 徐海宏[1] 孙春峰[1] 

机构地区：[1]华北科技学院环境工程系,北京101601

出　　处：《环境工程学报》2008年第3期344-348,共5页Chinese Journal of Environmental Engineering

基　　金：黑龙江省教育厅自然科学基金资助项目(10553087);华北科技学院自然科学基金资助项目(A06005)

摘　　要：实验采用共沉淀法,以无机盐SnCl4.5H2O、Sb2O3、Gd(NO3)3为前驱体,制备稀土Gd掺杂SnO2/Ti多组分涂层阳极。研究了用不同沉淀剂制备的电极以苯酚为目标有机物的电化学降解特性,以考察沉淀剂对稀土Gd掺杂SnO2/Ti阳极性能的影响;并对所制备的涂层阳极进行了SEM、XRD、XPS等表征及阳极极化曲线、循环伏安曲线测试,分析并讨论了沉淀剂对稀土Gd掺杂SnO2/Ti阳极性能的影响机理。结果表明,沉淀剂对稀土Gd掺杂SnO2/Ti电极性能有较大的影响,在本实验条件,以氨水为沉淀剂所制备的电极电催化性能较好,稳定性能较高。SnCl4·5H2O, Sb2O3 ,and Gd（ NO3）3 were used as the precursors to prepare the film of Gd doping SnO2/Ti oxide anode by a coprecipitation method. Taking phenol as model substrate, the electrochemical characteristcs of prepared anodes were investigated. SEN, XRD,XPS and anodic polarization curve, cyclic voltammorgram etc were selected to study the structure of Gd doping SnO2/Ti by different precipitators. The mechanism was also discussed. The results show that the electrocatalytic ability and the stability of Gd doping SnO2/Ti anodes metal oxide coating （DSA） can be affected by precipitator. Under the conditions of our experiment, it shows that the NH3·H2O is acquired,the anode by NH3·H2O is better.

关 键 词：涂层阳极 共沉淀法 掺杂 沉淀剂 

分 类 号：X131.2[环境科学与工程—环境科学]