欢迎来到天天文库
浏览记录
ID:28058168
大小:148.00 KB
页数:10页
时间:2018-12-07
《水热法合成lapo4tio2异质结复合光催化材料及性能研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、水热法合成LaP04/Ti02异质结复合光催化材料及性能研究李跃军曹铁平梅泽民王霞席啸天白城师范学院纳米光催化材料研究中心摘要:以静电纺丝技术制备的锐钛矿相TiO2纳米纤维为棊质,鉍素为碱源,环己烷六羧酸为小分子模板剂,采用水热法合成了1^卩0,1/1402异质结复合纳米纤维。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高倍透射电子显微镜(HRTEM)和X射线衍射(XRD)等分析测试手段对产物形貌和结构进行了表征,并以甲基橙为模拟污染物,紫外光为光源,评价了样品光催化降解活性。结果表明:LaPO.,纳
2、米棒均匀地构筑在Ti02纳米纤维表面,制备丫LaP(VTiO2异质结复合纳米纤维光催化材料,其具有比纯Ti02纳米纤维和DegussaP-25更强的光催化活性,降解率达到89.4%。关键词:LaPO4/TiO2复合光催化剂;异质结;水热法;光催化;作者简介:李跃军(1964-),男,硕士,教授;研宄方向:功能纳米材料作者简介:曹铁平(E-mail:bcctp2008@163.com)收稿日期:2016-10-22基金:国家自然科学基金项目(21573003)HydrothermalSynthesisandPhot
3、ocatalyticPropertiesofHeterostructuresLaP04/Ti02CompositePhotocatalystLiYuejunCaoTiepingMeiZheminWangXiaXiXiaotianResearchCentreofNanoPhotocatalystMaterials,BaichengNormalUniversity;Abstract:HctcrostructurcdLaP0i/Ti02compositephotocatalystmaterialweresynthesi
4、zedviahydrothermalmethodwithelectrospinningfabricationofanataseTi02nanofibersassubstrate,urea(CO(NH2)2)asalkalinesource,andCyclohexanesixcarboxylicacid(H6L)aslowmoleculartemplate.ThemorphologyandstructureofLaPOt/Ti02compositenanofiberswerecharacterizedbyscann
5、ingelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),high-resolutiontransmissionelectronmicroscopy(HRTEM)andX-raydiffraction(XRD)analysis.Thephotocatalyticactivityofthepreparedsampleswasevaluatedbyphotocatalyticdegradationofmethylorange(MO)underUVli
6、ghtirradiation.TheresultsshowedthatLaPO!nanorodcouldevenlygrowontheTi02nanofiberssurfaceandthusheterostrueturedLaPO,/TiO2compositematerialsweresuccessfullyobtained.Byemployingmethylorange(MO)degradationasthemodelreaction,theLaP0,/Ti02heterostructuresshowedenh
7、ancedphotocatalyticefficiencycomparedwiththebareTi02nanofibersandDegussaP-25underUVlightirradiation,owingtothe89.4%ofdegradationrate.ThehighphotocatalyticperformanceoftheheterostructurescompositephotocatalystscouldbeattributedtothestrongUVlightabsorption.Keyw
8、ord:LaP04/Ti02compositephotocatalyst;heterostructures;hydrothermalmethod;photocatalyticproperty;Received:2016-10-22近年来,Ti02因其化学稳定性好、氧化还原能力强、价廉及无毒无公害等优点,越来越受到人们的关注。在环境保护、光能转换、生物医药和工业催化等领域有
此文档下载收益归作者所有