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时间:2018-08-03
《__择优取向bivo_亚微米片的制备及其光催化活性研究_赵国升》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、_010_择优取向BiVO_4亚微米片的制备及其光催化活性研究_赵国升第33卷第8期2014年8月硅酸盐通报BULLETINOFTHECHINESECERAMICSOCIETYVol.33No.8August,2014{010}择优取向BiVO4亚微米片的制备及其光催化活性研究1,2231,41,2赵国升,李玉鑫,牛思宇,刘伟,常立民(1.吉林师范大学环境友好材料制备与应用教育部重点实验室,四平136000;2.吉林师范大学化学学院,四平136000;3.四平市科学技术研究院,四平136000;4.吉林师范大学环境科学与工程学院,四平136000)摘要:采用丙三醇-水溶液
2、体系,通过调控前躯体的pH值水热合成了具有{010}晶面择优取向的亚微米级片状BiVO4粉体。通过X射线粉末衍射、紫外-可见光漫反射光谱、扫描电镜、透射电镜和高分辨透射电镜等技术对样品的结构和形貌进行表征。分析表明,丙三醇作为定向指示剂,在pH值为4时,制得了{010}择优取向的纯单斜相BiVO4亚微米片。在模拟太阳光照射下,考察了{010}择优取向单斜BiVO4亚微米片与{121}择优取向单斜BiVO4{010}择优取向单斜BiVO4亚微米片具有更高的光催化活性。粉体对亚甲基蓝溶液的光催化活性,结果表明,关键词:{010}晶面;择优取向;BiVO4;光催化中图分类号:O
3、643文献标识码:A1625(2014)08-2015-05文章编号:1001-PreparationandPhotocatalyticPerformanceofBiVO4Submicro-Sheetswith{010}PreferredOrientation242ZHAOGuo-sheng1,,LIYu-xin2,NIUSi-yu3,LIUWei1,,CHANGLi-min1,(1.KeyLaboratoryofPreparationandApplicationofEnvironmentalFriendlyMaterials,MinistryofEducation,Ji
4、linNormalUniversity,Siping136000,China;2.SchoolofChemistry,JilinNormalUniversity,Siping136000,China;3.SipingInstituteofScienceandTechnology,Siping136000,China;4.CollegeofEnvironmentScienceandEngineering,JilinNormalUniversity,Siping136000,China)Abstract:BiVO4submicro-sheetswith{010}preferr
5、edorientationweresynthesizedbyafacilehydrothermalprocesinglycerol-watersystem.ThesampleswerecharacterizedbyX-raydiffraction,UV–visdiffusereflectancespectroscopy,scanningelectronmicroscopy,transmissionelectronmicroscopyandhigh-resolutiontransmissionelectronmicroscopy.Theanalysesresultsshow
6、that,monoclinicBiVO4submicro-sheetswith{010}preferredorientationweresuccessfullypreparedusingglycerolasthedirectingagentatpH=4.ThephotocatalyticactivitiesofmonoclinicBiVO4with{010}preferredorientationand{121}preferredorientationwereevaluatedbythedegradationofmethyleneblueundersimulatedsun
7、lightirradiation.TheexperimentalresultsshowthatmonoclinicBiVO4submicro-sheetswith{010}preferredorientationhashigherphotocatalyticactivity.Keywords:{010}face;preferredorientation;bismuthvanadate;photocatalytic1引言[1,2]半导体光催化剂由于能够利用太阳能来控制环境污染和光解水产生氢能而受到广泛的关注。作为基金项目:吉林省
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