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掺杂铜和钒的纳米二氧化钛的光催化性能
引用本文:关鲁雄,李家元,王婷,李娟,钟文毅.掺杂铜和钒的纳米二氧化钛的光催化性能[J].中南大学学报(自然科学版),2006,37(4):731-736.
作者姓名:关鲁雄  李家元  王婷  李娟  钟文毅
作者单位:中南大学,化学化工学院,湖南,长沙,410083
摘    要:采用溶胶-凝胶-水热后处理法制备掺杂铜和钒的纳米二氧化钛,并对所得的纳米二氧化钛光催化剂的成分、结构与光催化性能的关系进行研究。用X射线衍射、荧光光谱、紫外-可见漫反射光谱对其进行分析。研究结果表明:其晶粒直径约为6nm;电子-空穴分离效率提高;对可见光响应显著增强。通过光催化降解模拟实验,发现该二氧化钛粉末对甲基橙有机废水的降解率达到97.9%,所得到的掺杂纳米二氧化钛光催化剂扩大了对可见光响应范围,提高了光催化降解效率。

关 键 词:溶胶-凝胶法  水热法  掺杂  纳米二氧化钛  光催化
文章编号:1672-7207(2006)04-0731-06
收稿时间:2005-12-12
修稿时间:2005年12月12

Photocatalysis of nanometer-sized TiO2 particles doped with Cu2+ and V5+
GUAN Lu-xiong,LI Jia-yuan,WANG Ting,LI Juan,ZHONG Wen-yi.Photocatalysis of nanometer-sized TiO2 particles doped with Cu2+ and V5+[J].Journal of Central South University:Science and Technology,2006,37(4):731-736.
Authors:GUAN Lu-xiong  LI Jia-yuan  WANG Ting  LI Juan  ZHONG Wen-yi
Institution:School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Abstract:Nanometer TiO_2 doped with Cu~(2+) and V~(5+) was prepared by sol-gel method and hydrothermal treatment.Relationship between the ingredient and structure of photocatalyst of nanometer TiO_2 and photocatalysis was investigated.The structure and photocatalysis of nano- meter TiO_2 obtained were studied by X-ray diffraction,fluorescence spectrum and ultravioletvisible diffuse reflection spectrum.The results show that the nanometer-sized TiO_2 has a crystalline diameter of 6 nm.The efficiency of electron-cavity separated is increased.The scope of visible light absorbed is increased.Through the photocatalysis decomposed simulation experiment,the degradation rate of TiO_2 for organic waste water containing methyl orange reaches 97.9%.The doped nanometer TiO_2 increases the scope in which the visible light is absorbed,and the efficiency is improved.
Keywords:sol-gel method  hydrothermal treatment  doping  nano-crystallite TiO2  photocatalysis
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