Fe、N共掺杂TiO_2纳米管阵列的制备及可见光光催化活性.pdf

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1、物理化学学~E(WuliHuaxueXuebao)MarchActaP．一Chim．Sin．2012，28(3)，635-640635[Article]doi：10．3866／PKU．WHXB201112231www．whxb．pku．edu．cnFe、NI共掺杂TiO2纳米管阵列的制备及可见光光催化活性吴奇苏钰丰孙岚王梦晔王莹莹林昌健(厦门大学化学化工学院化学系，福建厦门361005)摘要：应用电化学阳极氧化法结合浸渍和退火后处理制备了Fe和N共掺杂的TiO纳米管阵列光催化剂，并用场发射扫描电镜(FESEM)、X射线衍射(XRD)、X射

2、线光电子能谱(XPS)和俄歇电子能谱(AES)仪对其进行了表征．结果表明，Fe、N共掺杂对TiO纳米管阵列的形貌和结构没有明显影响，Fe和N均掺入了TiO晶格．紫外-可见(UV-Vis)漫反射光谱显示Fe和N共掺杂TiO纳米管阵列的吸收带边较纯TiO纳米管阵列和单一掺杂TiO纳米管阵列红移，可见光吸收增强以可见光催化降解罗丹明B(RhB)考察了材料的光催化活性，Fe和N共掺杂TiO纳米管阵列对RhB的降解速率较纯T；O纳米管阵列和单一掺杂丁iO纳米管阵列明显提高，证明了Fe、N共掺杂产生的协同效应提高了TiO纳米管阵列在可见光照射下的光催

3、化活性．关键词：Fe和N：共掺杂：TiOz纳米管阵列：罗丹明B：可见光中图分类号：0644PreparationandVisibleLightPhotoCataIytiCActivityofFe-NCodopedTiO2NanotubeArraysWUQiSUYu—FengSUNLanWANGMeng—YeWANGYing-YingLINChang-Jian(DepartmentofChemistry,CollegeofChemistryandChemicalEngineering,XiamenUniversity,Xiamen36100

4、5，FujianProvince,PR．China)Abstract：Fe-NcodopedTiO2nanotubearrayswerefabricatedbyanodizationofTi．foIIowedbywetimmersionandannealingpost-treatment．ThedopedTiO2nanotubearrayphOtOcatalystswerecharacterizedbyfield-emissionscanningelectronmicroscopy(FESEM)，X-raydiffraction(XRD)

5、，X-rayphotoelectronspectroscopy(XPS)，andAugerelectronspectroscopy(AES)．TheresultsindicatedthatFeandNdopantshadalmostnoefectonthemorphologyandstructureofTiO2nanotubearrays．andthatFeandNweredopedintotheTiO2lattice．UV-Visdiffusereflectancespectrashowedthattheabsorptionbanded

6、geofFe-NcodopedTiO2nanotubearraysexhibitedaredshiftcomparedwiththatofpureTiO2nanotubearraysandl=e—orN—dopedTiO2nanotubearrays．ThephotocatalyticactivityofFe．NcodopedTiO2nanotubearrayswasevaluatedbytheirabilitytodegraderhodamineBundervisibleIightirradiation．Thedegradationra

7、teofrhodamineBoverFe-NcodopedTiO2nanotubearrayswasobviouslyhigherthanthatoverpureTiO2nanotubearraysandFe-orN—dopedTiO2nanotubearrays．whichiSattributedtOthesynergisticeffectoftheFeandNcodopants．KeyWords：FeandN：Codoping；Ti02nanotubearray；RhodamineB：VisiblelightReceived：Nove

8、mber14．，2011：Revised：December15，2011：PublishedonWeb：December23．2011．Correspondingauthor．Email：su