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1、万方数据·88·材料导报：研究篇2009年10月(下)第23卷第10期钒铁掺杂Ti02微球的制备及其光催化性能研究+冯勇1，薛卫东1’2，王建华1，苏荣1，易丹1(I四川师范大学化学与材料科学学院，成都610068；2电子科技大学微电子与固体电子学院，成都610054)摘要采用水热法在不使用模板剂的条件下合成了在水中分散良好、粒径为300～800nm、规则的锐钛矿型TiQ微球。用NH·Vfh和FeC204按原子分数为o％、0．8％、1．6％、2．4％进行驴+、Fe3+掺杂；当Ti02质量浓度为0．1349／L、pH值为9时进行可见

2、光降解20mg／L亚甲基蓝实验。结果表明，V掺杂的降解效果与P25粉接近，Fe掺杂有抑制光催化的效果，钒铁共掺杂则呈现出短期降解能力优于未掺杂微球，并且比P25粉沉淀得更彻底、更迅速。通过XRD、FTIR、SEM分析发现，TiQ微球是由粒径约为10nm的晶粒组成，V+进入TiQ的晶格，Fe3+则以QFe203形式存在于微球中。关键词TD2微球钒铁掺杂亚甲基蓝可见光催化PreparationofDissociabilityV5+andFe3+Co-dopedTi02MicroSphericalParticlesandResearch

3、onItsVisibleLightPhotocatalysisFENGYon91，XUEWeidon91”，WANGJianhual，SURon91，YIDanl(1SchoolofChemistryandMaterialScience，SichuanNormalUniversity，Chengdu610068；2SchoolofMicroelectronicsandSolid-StateElectronics，UniversityofElectronicScienceandTechnologyofChina，Chengdu610

4、054)AbstmctUsinghydrothermalmethodwithouttemplates，brookiteTiobsphericalmicroparticlesaresuccess—fullysynthesizedwhosediametersizesare300800nm．TheTiQsphericalmicroparticlesco-dopeswith驴+andFe3+introducedbyNH4VChandFeGQwiththeatomfractionof0H，0．8％，1．6％and2．4％．Addthesam

5、pleswithaquantumof0．1349／Lintothesolutionstodegrade20mg／LmethylenebluesolutionunderthevisiblelightatpH=9．Theresultsshowthatthedegradationabilityof驴+dopedsphericalmicroparticlesisclosetoP25lthephoto-catalysisofFe3+dopedTi02sphericalmicroparticlesappearsinhibitionforthe

6、QFez03；thedegradationabilityof驴+andFes+co-dopedsamplesisbetterthantheundopedsamplesinthebeginning。andthesphericalmicroparticlessinkmorequicklycomparedwithP25powder．TheanalyticalresultsofXRD，FrIRandSEMrevealthatV5+andFe3+getintotheTi02crystallattice，enhancethevisibleli

7、ghtresponseatfirstanddecreasetheresponse50minlater．ThedopedTiozsphericalparticlesassembledbyllanoparticleswhosediameterisabout10nm，presentamicromulti—porousstructure．TheVs+dopantgetsintotheTiOzsphericalmicroparticles’crystalandFes+existsintheformofQFe2Q．KeywordsTi02sp

8、hericalmicroparticles．扩+andFes+co-doped，methyleneblue，visiblelightphotocataly-0引言在采用光催化降解技术治理环境污染的研究中，Tioz因具有无毒、价廉，抗腐蚀和催化活性较