太原理工大学学报2016，Vol.47Issue(6)：711-717,7.DOI:10.16355/j.cnki.issn1007-9432tyut.2016.06.006
Ag负载对N掺杂TiO2薄膜光催化性能的影响
Effect of Silver Deposition on Photocatalytic Performance of N-Doped TiO2 Thin Film
摘要
Abstract
Titanium nitride (TiN)thin film was prepared by electrophoreic deposition process on Ti substrate in an aqueous suspension of nanosized TiN powder,and then nitrogen-doped tita-nium dioxide (N-TiO2 )thin film was fabricated by heating the TiN film at 450 ℃ for 1h in air. Ag nanoparticles were deposited on the surface of N-TiO2 thin film in different concentration of AgNO3 solution by photo-reduction deposition.The samples were characterized by X-ray diffrac-tion,scanning electron microscopy and UV-visible spectroscopy.Photoelectric properties and pho-tocatalytic activities were investigated via the measurement of transient photocurrent density and the photocatalytic degradation of Rhodamine B under visible light,respectively.Effect of silver deposition on photoelectric and photocatalytic performance of N-TiO2 thin film was emphatically studied.The results show that moderate deposition of Ag particles significantly improved the photoelectric and photocatalytic performance of N-TiO2 thin film,and the optimal concentration of AgNO3 solution for Ag deposition was 0.05 mol·L-1 .Under visible light,the transient pho-tocurrent density of Ag deposited N-TiO2 thin film was approximately 5.4 times that of N-TiO2 thin film,and for Ag deposited N-TiO2 thin film,the degradation rate of Rhodamine B for 3 hours was 98%,improved a lot when compared with that of N-TiO2 thin film.关键词
二氧化钛/氮掺杂/银负载/电泳沉积/光还原沉积/光电性能/光催化活性Key words
titanium dioxide/nitrogen doping/silver deposition/electrophoreic deposition/pho-to-reduction deposition/photoelectric properties/photocatalytic activity分类
数理科学引用本文复制引用
张伟华,李秀燕,落全伟,刘瑞萍,曹铃,范明明..Ag负载对N掺杂TiO2薄膜光催化性能的影响[J].太原理工大学学报,2016,47(6):711-717,7.基金项目
国家自然科学基金青年基金资助项目:体心立方金属中螺位错运动机理的温度效应理论研究(51401142) （51401142）
