高等学校化学学报Issue(9)：1954-1961,8.DOI:10.7503/cjcu20140213
钒掺杂介孔二氧化钛的制备及可见光催化性能
Preparation and Visible-light Photocatalytic Performance of Mesoporous Vanadium-doped Titania
摘要
Abstract
Based on employing the liquid crystal of surfactant cetyltrimethyl ammonium bromide ( CTAB ) , tetrabutyl titanate and ammonium metavanadate as template, titanium source and doping-ion precursor, respectively, vanadium-doped mesoporous titanium dioxide ( VMT ) was obtained by sol-gel method. The structure of obtained sample was characterized via X-ray diffraction(XRD), nitrogen adsorption-desorption, thermogravimetry-differential thermal analysis ( TG-DTA ) , X-ray photoelectron spectroscopy ( XPS ) , UV-Visible diffuse reflection spectrometry( UV-Vis) and transmission electronic microscopy( TEM) . Choosing methylene blue( MB) as the target degradation product, the photocatalytic performance of VMT was discussed under visible light irradiation. The results show that doping vanadium can reduce TiO2 particle size, inhibit photo-electron and hole recombination rate as well as increase specific surface area and the concentration of titanium ion and hydroxyl. Thus VMT exhibits the highest catalytic activity among pure MT, VMT and P25 under UV-light irradiation. In addition, doping vanadium can also lessen MT band-gap energy and improve its catalytic activity under visible light. The optimal photocatalytic condition is as follows: catalyst concentration of 0. 83 g/L and MB concentration of 1 mg/L.关键词
溶胶-凝胶法/掺钒二氧化钛/介孔材料/亚甲基蓝/光催化性能Key words
Sol-gel method/Vanadium-doped titana/Mesoporous material/Methylene blue/Photocatalytic performance分类
化学化工引用本文复制引用
徐鹏,李佑稷,刘晨,李铭,邓瑞成..钒掺杂介孔二氧化钛的制备及可见光催化性能[J].高等学校化学学报,2014,(9):1954-1961,8.基金项目
国家自然科学基金(批准号:51172092)、教育部新世纪优秀人才支撑计划(批准号：NCET-12-0720)、湖南省自然科学杰出青年基金(批准号:13JJ1023)、吉首大学研究生项目(批准号:13JDY027)和湖南省高校科技创新团队支持计划资助. Supported by the National Natural Science Foundation of China(No.51172092), the Program for New Century Excellent Talents in Univer-sity, China(No. NCET-12-0720), the Natural Science Foundation for Distinguished Young Scholars of Hunan Province, China(No.13JJ1023), the Graduate Program of Jishou University, China(No.13JDY027) and the Science and Technology Innovative Research Team in Higher Education Institutions of Hunan Province, China （批准号:51172092）
