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1、NanoResearch2014,7(1):104–109DOI10.1007/s12274-013-0377-8Fabricationofperiodicallyalignedverticalsingle-crystallineanataseTiO2nanotubeswithperfecthexagonalopen-endsusingchemicalcappingmaterials1231HuiSong,KyubongJo,BockYoungJung(),andGunYoungJung()1SchoolofMaterialsScienceandEngineering,Gwa
2、ngjuInstituteofScienceandTechnology(GIST),Gwangju,RepublicofKorea2DepartmentofChemistryandInterdisciplinaryProgramofIntegratedBiotechnology,SogangUniversity,Seoul,RepublicofKorea3DepartmentofGeneralDentistry,CollegeofDentistry,YonseiUniversity,Seoul,RepublicofKoreaReceived:10September2013ABST
3、RACTRevised:14October2013AverticallyalignedanataseTiO2(A-TiO2)nanotubearrayhasbeenfabricatedAccepted:15October2013bycoatingaZnOnanorod(NR)templatewithaTiOprecursorsolution.After2coating,theZnONRcoreswereselectivelyetchedinanacidicenvironmentto©TsinghuaUniversityPressformTiOnanotubes(NTs).More
4、specifically,aftergrowingtheZnONRsviaa2andSpringer-VerlagBerlinhydrothermalmethod,onedropoftheTiO2precursorsolutionwascasttocoatHeidelberg2013theZnONRs,thetopsofwhichwerepreviouslycoveredwithchemicalcappingmaterialsbyelectrostaticinteraction,andthenthesamplewassintered.Finally,KEYWORDSthesamp
5、lewasimmersedinanacidicsolutionresultinginselectiveetchingofTiO2nanotubes,theZnONRcores.Thus,onlyTiO2NTsremainedonthesubstrate.Thecappingchemicalcappingmaterial,materialiseffectivelyusedtocreateaperfect,hexagonalopen-endedTiO2NTZnOnanorodtemplate,array,whichinterestinglyextendsonsetabsorption
6、towardsthevisibleregion.laserinterferencelithography1IntroductionSnO2,andFe2O3[2,3].Moreover,A-TiO2ismuchmorereactiveinphotocatalyticreactionscomparedwithTitaniumdioxide(TiO2)hasseveraladvantageousR-TiO2becausetheaveragesurfaceenergyofA-TiO2properties,suchasabundanceinnature,highstabilityishi
7、gherthanthatofR-TiO2.Additionally,A-TiO2hasagainstphoto-orchemicalcorrosion,chemicalorawiderbandgap(3.2eV)andahigherelectronmobilitybiologicalinactivityandhighphotocatalyticactivity[1].(~10cm2/(V·s))thanR-TiO(3.0eV,~1cm2/(V·s))due2Therearetwo
