摘要
ZnO/Fe_(2)O_(3) nanorod arrays(NRs)and ZnO/NiO nanotube arrays(NTs)are synthesized on Si substrates by using a facile two-step growth method.The absorption spectrum of the ZnO/Fe_(2)O_(3) NRs shows significant absorption in the visible light region.Their photocatalytic properties are evaluated by the degradation of methylene blue(MB).It is found that the ZnO/Fe_(2)O_(3) NRs display higher photocatalytic activity than the ZnO/NiO nanotube arrays under UV-vis light irradiation.This is most likely attributed to an effective separation of photoelectrons and holes.
基金
Supported by the National Basic Research Program of China under Grant No 2007CB613302
the National Natural Science Foundation of China under Grant No 50972002.
