新型多孔Ti/Sb2O4-SnO2电极的制备及性能

Preparation and Performance of Novel Porous Ti/Sb 2O 4-SnO 2 Electrode

以采用脱合金方法制备的具有纳米多孔结构的钛板为基体,通过电沉积方法和热分解法成功制备了锡锑氧化物电极(Ti/Sb2O4-SnO2)。利用X射线衍射、扫描电子显微镜、透射电子显微镜对电极的相组成、微观形貌进行表征。应用电化学工作站测试电极的电化学性能,并研究了电极对苯酚的电催化氧化降解能力。通过调节钛基体热处理温度来优化电极性能,结果表明:多孔钛基体热处理温度为300℃时,制备的Ti/Sb2O4-SnO2电极多孔网状结构明显清晰,电流密度最大,导电性最好,电极实际寿命达到251.6 h,电极电阻最小,约为14.5Ω,90 min对苯酚的降解效率最高,约为97%。

Ti with nanoporous structure was prepared by dealloying method,and then it was used as a substrate for preparing a tin antimony oxide electrode(Ti/Sb 2O 4-SnO 2)by electrodeposition and thermal decomposition.The phase composition,microstructure and surface morphology of the electrode were analyzed by X-ray diffraction,scanning electron microscopy and transmission electron microscopy.The electrochemical performance of the electrode was tested by using an electrochemical workstation.The electrocatalytic oxidation property of the electrode as anode for the degradation of phenol was studied.The electrode performance was optimized by adjusting the heat treatment temperature of the Ti substrate.The results show that when the heat treatment temperature of the porous Ti substrate is 300℃,the porous network structure of the prepared Ti/Sb 2O 4-SnO 2 electrodeis clear,the electrode has maximum current density,best conductivity,its actual life reaches up to 251.6 h,it has minimum electrode resistance,approximately 14.5Ω.The degradation efficiency of phenol is the highest at 90 min,it is about 97%.