PbS量子点敏化B/S/TiO_2复合纳米管的制备及其光催化性能  

Preparation and Photocatalytic Properties of PbS Quantum Dots Sensitized B/S/TiO_2 Composite Nanotube

作　　者：李晓苇[1] 陈瑞雪[1] 崔彤[1] 卢琪[1] 张华艳[1] 袁小先 刘泽鑫[1] 李玲[1] 

机构地区：[1]河北大学物理科学与技术学院河北省光电信息材料重点实验室,河北保定071002

出　　处：《材料科学与工程学报》2015年第5期630-634,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(21201053);高等学校博士学科点专项科研基金新教师类资助项目(20121301120005);河北省教育厅优秀青年基金资助项目(YQ2013009);中国博士后科学基金资助项目(2013M540213);河北省自然科学基金资助项目(F2014201078);河北省应用基础研究计划重点基础研究资助项目(14964306D);河北大学引进人才启动基金资助项目(2012-233)

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。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.

关 键 词：光催化 B/S/TiO2纳米管 PbS量子点 PbS/B/S/TNTs 

分 类 号：TQ613.1[化学工程—精细化工]