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1、NitrogenDopedUltrathinBiOClNanosheetsforEnhancedPhotocatalyticCO2ReductionunderVisibleLightJianShang,LejuanCai,LizhiZhang*KeyLaboratoryofPesticide&ChemicalBiologyofMinistiyofEducation,InstituteofEnvironmentalChemistry,CollegeofChemistry,CentralChinaNormalUniversity,Wuhan430079,P.R.Chi
2、na*Correspondingauthor:Email:zhanglz@mail.ccnu.edu.cn(LZZhang)IntroductionTheconversionofcarbondioxide(CO2)toreusablechemicalfeedstockcontributestosolvingtheglobalenergyshortageandmitigatingthegreenhouseeffectscausedbythedepletionoffossilfuels,thereforeattractsintensiveattention.Among
3、variousCO2conversionstrategies,thephotocatalyticCO2reductionstrategyisthemostpromisingonebecauseofitsmildreactionconditionandenvironment-friendlyprogress.Unfortunately,uptonow,thetotalphotocatalyticreductionefficiencyisrelativelylowandneedsfurtherpromotionforpracticalutilization.Accor
4、dingtopreviousresearches,thelowefficiencyofphotocatalyticCO2reductionismainlycausedbythefollowingtworeasons:(1)themajorityofphotocatalysts,suchasmetaloxides,sulfides,andtheirmixedsolidsolutions,havelowefficiencyinadsorptionofCO2molecules;(2)thetraditionalphotocatalystsusuallypossesslo
5、wefficiencyinsolar-energyharvestingandchargecarrierseparation,thatleadstodissatisfiedperformanceinactivationofCO2molecules.Assuch,itisextremelyimportanttofundamentallyimprovetheefficiencyofCO2adsorptionandactivationofthephotocatalysts-Recently,nitrogen-dopedmaterialshavebeenreportedto
6、increasetheefficiencyincapturingandactivatingCO2,becausetheunsharedpairelectronsofdopingnitrogenatomcanactasLewisbasicsitetobondwithCO2molecule.Moreover,dopingnitrogenatomsinmaterialscanextendtheUV-vislightabsorptionrangeandalsoacceleratechargecarrierseparationprocess,thusfinallyachie
7、vinghighefficiencyinCO2reduction・However,forlackofidealtheoreticalnitrogendopedmodel,theprogressinsystematicallyinvestigatingtheeffectsofdopingnitrogenatomswithatomic-levelinsightonCO2reductionisseriouslyhampered.Hence,developingadopingmodeltoexplaintheenhancedmechanismofCO2reductioni
8、nduce
