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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。
The CdSe or / and PbSe supported TiO2 nanobelt composites were prepared by a two-step hydrothermal synthesis process. The products were characterized by XRD, SEM, TEM, UV-Vis absorption and FTIR. The results show that the hexagonal CdSe particles and / or cubic PbSe particles are directly supported on the surface of tetragonal anatase TiO2 nanoribbons. The particle size of nearly spherical CdSe particles is mainly in the range of 100-400 nm, Particle length is mainly in the 300 ~ 1000 nm. CdSe and PbSe co-supported TiO2 nanobelt composites have strong light absorption in the visible region. Inferred from the FTIR spectra, a small amount of Cd2 + or / and Pb2 + ions are doped in the composite nanostructure of TiO2.