La-N共掺杂二氧化钛的制备及光催化性能研究  

Preparation of La-N co-doped TiO_2 and study on its photocatalytic property

作　　者：张小娜[1] 周少奇[1,2,3] 杨梅梅[1] 陈安安[1] 沙爽[1] 周晓[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510641 [3]广东省教育厅环境保护与生态修复重点实验室,广东广州510006

出　　处：《现代化工》2012年第9期50-52,共3页Modern Chemical Industry

基　　金：广州市重大科技项目(2008DLB2080500)

摘　　要：以泡沫镍为载体,钛酸四丁酯(TBOT)、硝酸镧、尿素为原料,采用溶胶-凝胶法合成了N掺杂、La掺杂和La-N共掺杂的TiO2光催化剂。利用X射线衍射(XRD)、红外光谱(FT-IR)、拉曼光谱(Raman)等技术手段对催化剂进行表征,结果表明,La和N的掺杂改变了催化剂的结构形态。以反渗透浓缩渗滤液为目标降解物的光催化试验表明,La-N共掺杂的TiO2其催化性能得到了显著提高。La-N co-doped, La doped and N doped TiO2 photocatalysts are prepared by sol-gel method with tetrabutyl titanate,lanthanum nitrate and urea as raw materials and nickel foam substrates as supports. The photoeatalyst is characterized by X-ray diffraction （XRD） ,Fourier transform infrared spectroscopy （FT-IR） and Roman spectra. It shows that the doping of La and N changes the structural form of the catalyst. The degradation of landfill leachate is investigated as a model reaction to study photocatalytie activity of different catalysts. The result show that the photocatalytie activity of La-N co-doped TiO2 is significantly improved.

关 键 词：La—N共掺杂 TIO2 光电催化 垃圾渗滤液 

分 类 号：X52[环境科学与工程—环境工程]