水热法制备CdSe和PbSe共负载TiO_2纳米带复合材料  

Hydrothermal Preparation of CdSe and PbSe Co-deposited TiO_2 Nanobelts

作　　者：嵇天浩[1] 李丽[1] 田淼[1] 董立雅[1] 孙宝国[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100048

出　　处：《精细化工》2011年第1期14-17,44,共5页Fine Chemicals

基　　金：国家重点基础研究发展计划(973计划)资助项目(2006CB932605);北京工商大学高层引进人才资助项目~~

摘　　要：采用两步水热合成过程制得了CdSe或/和PbSe负载的TiO2纳米带复合材料。用XRD、SEM、TEM、UV-Vis吸收和FTIR等测试技术对产物进行了一系列表征。结果表明,六方相CdSe粒子或/和立方相PbSe粒子直接负载在四方相锐钛矿型TiO2纳米带表面,其中呈近球形CdSe粒子的粒径主要在100~400 nm,而呈近立方体形PbSe粒子的边长主要在300~1 000 nm。CdSe和PbSe共负载TiO2纳米带复合材料在可见光区域有强的光吸收。由FTIR谱图推断,在复合材料载体TiO2纳米带结构中掺杂有少量Cd2＋或/和Pb2＋离子。CdSe or/and PbSe-deposited TiO2 nanobelts were prepared using the two-step hydrothermal preparation process.Various techniques including XRD,SEM,TEM,UV-Vis absorption and FTIR measurements were performed to characterize a series of products.The results show that hexagonal CdSe particles with sphere-like or/and cubic PbSe particles with cube-like morphology deposit on the surface of anatase TiO2 nanobelts,in which the CdSe or PbSe particles are mainly with the size in a wide range of 100～400 nm or 300～1 000 nm,respectively.Not any organic connection exists between particles and nanobelts.CdSe and PbSe co-deposited TiO2 nanobelts exhibit a very strong absorption in the visible-light region.The fact that a little bit Cd2＋ or/and Pb2＋ ions have doped into TiO2 nanobelts for the composite products has been inferred by FTIR measurement results.

关 键 词：水热合成 复合材料 CdSe/PbSe负载 TIO2纳米带 功能材料 

分 类 号：TB381[一般工业技术—材料科学与工程]