人工晶体学报2017，Vol.46Issue(7)：1307-1314,8.
Sm,C掺杂改性纳米TiO2及其可见光催化性能研究
Study on Sm, C and Sm/C Co-doped Nano-TiO2 and Its Visible Photocatalytic Properties
摘要
Abstract
The nano-TiO2 photocatalysts with element doping by Sm and C were prepared via a facile sol-gel procedure.Samples were characterized by XRD, SEM, TEM, XPS, UV-Vis-DRS, PL and Nano-sizer nano particle size analyzer,etc.The photocatalytic activity of different TiO2 samples were evaluated by photocatalytic degradation of methylene blue (MB) under the irradiation of fluorescent lamp.The results show that single Sm ion doping inhibited the phase transition from anatase to rutile and restrained the increase of grain size, but single C ion doping promote formation of rutile phase.Appropriate doping amount of Sm and/or C broadene the absorption region to visible light, refined grain and decrease the recombination of the photo-generated electrons and holes.Doping of Sm and C improve the photocatalytic activity of TiO2 and there existe synergistic effect in co-doping.The degradation rate of MB over the sample with molar ratio of n(Sm)∶n(C)∶n(Ti)=0.01∶0.3∶1 and sintered at 500 ℃ is the best under the irradiation of fluorescent light, the first-order apparent rate constants increased by about 4.3 times than that of pure TiO2 under the same experimental conditions.关键词
纳米TiO2/Sm,C共掺杂/光催化Key words
nano-TiO2/Sm-C co-doping/photocatalysis分类
化学化工引用本文复制引用
彭富昌,邹建新..Sm,C掺杂改性纳米TiO2及其可见光催化性能研究[J].人工晶体学报,2017,46(7):1307-1314,8.基金项目
四川省教育厅自然科学基金(17ZB0227) （17ZB0227）
云南省微纳材料与技术重点实验室开放基金(KF2015005) （KF2015005）
