S掺杂形式对TiO_2基光催化剂结构和性能的影响.pdf

第25卷第ll期 无 机 化 学 学 报 V01．25No．11 2009年11月 INORGANIC CHINESEJOURNAl．OF CHEMISTRY 2010～2015 S掺杂形式对Ti02基光催化剂结构和性能的影响 王玉萍 曹金丽 彭盘英★ (南京师范大学化学与环境科学学院，南京210097) 摘要：采用改进的s01．gel法制备了S-Ti02和Ti02，用1 表明：S-TiO：的禁带宽度明显降低，并且对400～650nm区域的可见光都有一定的吸收．其可见光活性和紫外光活性均高于 SO乒／Ti02和纯Ti02。 关键词：硫掺杂；S042-表面修饰；光催化活性 中图分类号：0613．51；0614．41+1；0643．36文献标识码：A 文章编号2009)11．2010-06 TheEffectof MethodsonStructureand of Based S-Doping ActivityTi02 Photocatalysts WANG CAO PENG Yu-PingJin·Li Pan—Ying。 andEnvironmental Normal ofChemistry (School Science，NanjingUniversity,Nanjing210097) Abstract：neand were the was S-Ti02Ti02 by method，theSO}-／Ti02 prepared improvedsol-gel preparedby of with werecharacterized Ti02 H2S04 mo卜L。)．The XRD，IR，UV．Vis， impregnation solution(1 photocatalysts by andthe activitieswere SEM，EDSphotocatalytic evaluated of acidl byphotodegradation underultravioletandvisibleradiation．Theresultsshowedthattheband of wasreduced light gapS．Ti02 obviously， thevisible wasextendedto400～650 the activitieswere nm。and both lightabsorption photocatalytic higher出an and undereitherultravioletradiation S047i厂I’i02 Ti02 orvisibleradiation． pure light surface Keywor