摘要
用溶胶凝胶法制备了钙钛矿型氧化物SrRuO3,热重分析和X射线衍射分别对制备过程和产物进行了分析和表征。采用循环伏安、计时电流和交流阻抗方法测试了所得产物对常温下碱性介质中乙醇电化学氧化的催化性能。循环伏安曲线、计时电流和交流阻抗结果表明:在乙醇溶液中,阳极电流密度明显大于氢氧化钾溶液中的阳极电流密度,并且随着电极中SrRuO3含量的增加,电流密度也大幅度增加,在乙醇溶液中,SrRuO3电极的电荷迁移阻抗明显降低。SrRuO3对乙醇电化学氧化具有良好的催化作用。
The sol-gel method was employed to prepare perovskite SrRuO3. The phase transition was determined by DTA-TG and the formation of perovskite structure was characterized by X-ray diffraction （XRD） Cyclic voltammetry, chronoamperometric and EIS were used to test the performance of SrRuO3 as catalyst for electrochemical oxidation of ethanol in alkaline medium at room temperature. The Cyclic voltammetry, chronoamperometric and EIS, results indicate that the anode current density of SrRuO3 electrode in ethanol solution is significantly higher than that in KOH solution. With the increase in SrRuO3 content, the anode current density increases greatly. The charge transfer resistance in ethanol solution is lower than that in KOH solution. SrRuO3 exhibits a remarkable catalytic activity for ethanol electro-oxidation.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2007年第11期1970-1974,共5页
Chinese Journal of Inorganic Chemistry
