摘要
The hybridization of graphene with Bi_(2)WO_(6)photocatalysts was employed to enhance the photocatalytic activity.The photocatalytic activity enhancements were dependent on the amount of graphene and it was found that the optimal hybridized amount of graphene was about 1.5 wt%,which was close to the monolayer dispersing of graphene on Bi_(2)WO_(6)surface.Up to four times of the photocatalytic activity was enhanced by the hybridization of graphene,compared with that of pristine Bi_(2)WO_(6).The enhancement mechanism of the photocatalytic activity was attributed to the higher separation efficiency and the inhibition of recombination of photoinduced electron-hole pairs.The electronic interaction was verified by the photoelectrochemical measurements.
基金
the National Natural Science Foundation of China(20925725)
the Fundamental Research Funds for the Central Universities(2011QN138)
State Key Laboratory of New Ceramic and Fine Processing Tsinghua University.
