Facile synthesis of graphene oxide-enwrapped Ag₃PO₄ composites with highly efficient visible light photocatalytic performance
2013
Cui, Haiying | Yang, Xiaofei | Gao, Qingxia | Liu, Heng | Li, Yang | Tang, Hua | Zhang, Rongxian | Qin, Jieling | Yan, Xuehua
Graphene oxide (GO)-enwrapped Ag₃PO₄ composites were successfully fabricated by the electrostatically-driven assembly of positively charged silver ions on the negatively charged GO sheets, followed by the controlled growth of sphere-like Ag₃PO₄ particles on GO sheets via an in-situ ion-exchange method. Moreover, GO–Ag₃PO₄ composites were fully characterized and the visible light photocatalytic performance of the GO–Ag₃PO₄ sample was investigated. The results indicated that the presence of GO sheets could effectively tailor the size of Ag₃PO₄ particles, GO–Ag₃PO₄ composites exhibited excellent visible-light absorption, and the photocatalytic degradation efficiency of Rhodamine B (RhB) over GO–Ag₃PO₄ composites is apparently higher than with pure Ag₃PO₄ mainly due to the photo-induced holes and the generation of irradiated active superoxide radicals.
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