中文摘要：

本文首次以自制的B/S/TiO2粉末颗粒为原料采用水热法制备出了B/S/TiO2纳米管,再使用巯基乙酸为双管能链连接B/S/TiO2纳米管（B/S/TNTs）,最终制得一种新型PbS量子点复合的B/S/TiO2纳米管（PbS/B/S/TNTs）材料。使用X射线衍射仪、透射电子显微镜、紫外-可见分光光度计以及X射线光电子能谱仪等对样品晶型、形貌、光谱吸收范围和表面进行了表征。结果表明少量B和S掺杂对TiO2晶型、形貌没有影响,PbS/B/S/TNTs吸收光带边相对于纯TNTs明显红移,提高了样品对太阳光的利用率。在λ〉420nm的光照下,使用酸性红3R染料对样品光催化特性进行研究,表明PbS/B/S/TNTs光催化性能明显高于PbS/TNTs。

英文摘要：

This paper reports a first preparation of B/S/TiO2 nanotube by using our own synthesized B and S co-doped TiO2 nanoparticles.A novel photocatalytic material of B/S/TiO2nanotube（B/S/TNTs）coupling with PbS quantum dots（QDs）（PbS/B/S/TNTs）was eventually composited by attaching PbS QDs to B/S/TNTs with a bifunctional linker,thioglycolic acid.The crystal form,morphology,absorption spectrum and element type of the final products were investigated by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,UV-Vis spectrophotometer and X-ray energy dispersive spectroscopy（XPS）.The results indicate that B and S co-doping does not affect the crystal form and morphology,but bring about a red shift in the absorption edge of PbS/B/S/TNTs with respect to pure TNTs.Under solar irradiance,the photocatalytic properties studied through photodegrading acid red 3Rdye show that the photocatalytic performance of the PbS/B/S/TNTs is significantly higher than that of PbS/TNTs.