TiO_2-Fe^(3+)/Ti复合电极的制备及电化学特性研究  

The preparation of the TiO_2-Fe^(3+)/Ti compound electrode and the research of E-chemical specific

作　　者：胡敏[1] 苏桂琴[1] 汪琪[1] 董宗木[1] 

机构地区：[1]安徽师范大学化学生物系,安徽芜湖241008

出　　处：《广西大学学报（自然科学版）》2006年第1期20-23,共4页Journal of Guangxi University（Natural Science Edition）

基　　金：安徽省教育厅自然科学研究项目(2003kj329)

摘　　要：用F e3+掺杂的二氧化钛溶胶制得钛基纳米T iO2-F e3+/T i复合催化电极,用紫外分光光度法和XRD表征了电极材料吸收光谱特性和电极表面的微观结构,用循环伏安法研究了电极的电化学特性.结果表明,由于F e3+的存在,在-0.78 V(vs.SCE)处出现了一个还原峰,表明电极表面膜中存在F e3+还原成F e2+并进一步与电极中T iO2发生化学反应,是EC过程.The precursor Ti（OEt）4 was prepared by anodic dissolution of metallic titanium in absolution ethanol and directly hydrolyzed to prepare nanoerystalline TiO2 film with Fe^3＋ doping in it on titanium electrode （TiO2-Fe^3＋/Ti） by a sol-gel process. UV-Vis and XRD were used to sign the microcosmic structure of nanocrystalline TiO2 film with Fe^3＋ doping in it. Electric catalysis activities of the TiO2-Fe^3＋/Ti electrode were investigated by cyclic voltammetry. The investigation reveals that there is a redox peak on -0. 78 V（vs. SCE）,that is to say,Fe（OH）3 has been reduced to Fe（OH）2. It is EC process.

关 键 词：TiO2-Fe^3+/Ti电极 制各 特性 苯酚 

分 类 号：O643.32[理学—物理化学]