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.
出处
《广西大学学报（自然科学版）》
CAS
CSCD
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)
