Fabrication and improved photocatalytic activity of n-ZnO nanorod arrays/p-CuO thin film heterojunction
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ZnO nanorod arrays (NRs) are successfully synthesized on CuO thin film by hydrothermal method. The result of scanning electron microscopy demonstrates that the ZnO NRs produce great changes on morphology after deposited on CuO thin film. The current–voltage measurement of ZnO NRs/CuO film heterostructures show an evident rectifying behavior. Furthermore, the photocatalytic activity is investigated by degradation of methyl orange dye. It is found that compared with ZnO NRs, ZnO NRs/CuO film heterostructures display a better photocatalytic activity.
KeywordsPhotocatalytic Activity Methyl Orange Visible Light Irradiation Visible Light Region Methyl Orange Solution
The work was supported by National Science Foundation of China (Nos. 61306014 and 61574051), the Research Fund for the Doctoral Program of Higher Education of China (No. 20122302120009), the China Postdoctoral Science Foundation (No. 2013M540283), Heilongjiang Postdoctoral Foundation (LBH-Z11142), the Fundamental Research Funds for the Central Universities (No. HIT. NSRIF. 2014003), Natural Science Foundation of Heilongjiang Province of China (E2015002), and Open Project Program of Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education, Harbin Normal University (PEBM201406).