%0 Journal Article
%T Visible-light-inducedphotocatalyticperformancesofZnO-CuOnanocompositesfordegradationof2,4-dichlorophenol
%A E. D. Sherly
%A J. Judith Vijaya
%A L. John Kennedy
%J ´ß»¯Ñ§±¨
%P 1263-1272
%D 2015
%R 10.1016/S1872-2067(15)60886-5
%X £¿NanostructuredZnOandCuO,andcoupledoxides,i.e.,ZnCu,Zn2Cu,andZnCu2,withZnO:CuOmolarratiosof1:1,2:1,and1:2,respectively,weresuccessfullypreparedthroughasimple,one-step,microwave-assistedurea-nitratecombustionsynthesis,withouttheuseoforganicsolventsorsurfactants.ThepreparedsampleswerecharacterizedusingX-raydiffraction,X-rayphotoelectronspectroscopy,scanningelectronmicroscopy,energy-dispersiveX-rayanalysis,transmissionelectronmicroscopy,Fourier-transforminfraredspectroscopy,diffusereflectancespectroscopy,andphotoluminescencespectroscopy.TheopticalabsorptionofZnOextendedintothevisibleregionafterCuOloading.ThephotocatalyticactivitiesofZnO,CuO,andthecoupledoxideswereevaluatedbasedonphotodegradationof2,4-dichlorophenolundervisible-lightirradiation.ThecoupledmetaloxideZn2Cushowedthebestphotocatalyticactivity;thiswasmainlyattributedtotheextendedphotoresponsiverangeandtheincreasedchargeseparationrateinthenanocomposite.Thephotocatalyticdegradationprocessobeyedpseudo-first-orderkinetics.TheresultssuggestthatthecoupledmetaloxideZn2Cuhaspotentialapplicationsasanefficientcatalyticmaterialwithhighefficiencyandrecyclabilityforthephotocatalyticdegradationoforganicpollutantsinaqueoussolutionundervisible-lightirradiation.
%K Nanostructures
%K Coupledmetaloxide
%K Photocatalyticdegradation
%K Visiblelightirradiation
%K Recombination
%U http://www.chxb.cn/CN/abstract/abstract21649.shtml