Photocatalytic degradation of methyl orange over single crystalline ZnO: orientation dependence of photoactivity and photostability of ZnO.
作者： Nikolai Kislov , Jayeeta Lahiri , Himanshu Verma , D Yogi Goswami , Elias Stefanakos
DOI: 10.1021/LA803845F
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摘要: The photocatalytic destruction of methyl orange in aqueous solution has been studied over single crystal ZnO surfaces under UV irradiation. Differences in the apparent reaction rates between the polar surfaces (first order) and the nonpolar ZnO (10− 10) surface (zero order) were observed. Reaction rates for different crystallographic orientations showed the highest activity for ZnO (10− 10) followed by ZnO (0001)-Zn and the lowest activity for ZnO (000− 1)-O surfaces. In addition, the etching of surfaces by photolysis has been studied. For this …
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