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Ag3PO4/ZnO: an efficient visible-light-sensitized composite with its application in photocatalytic degradation of Rhodamine B
writer：Wei Liu, Mingliang Wang*, Chunxiang Xu, Shifu Chen*, Xianliang Fu*
keywords：Ag3PO4/ZnO, Rhodamine B
source：期刊
specific source：Mater. Res. Bull. 48(1):106-113, 2013.
Issue time：2013年
The efficient visible-light-sensitized Ag3PO4/ZnO composites with various weight percents of Ag3PO4 were prepared by a facile ball milling method. The photocatalysts were characterized by XRD, DRS, SEM, EDS, XPS, and BET specific area. The radical dotOH radicals produced during the photocatalytic reaction was detected by the TA–PL technique. The photocatalytic property of Ag3PO4/ZnO was evaluated by photocatalytic degradation of Rhodamine B under visible light irradiation. Significantly, the results revealed that the photocatalytic activity of the composites was much higher than that of pure Ag3PO4 and ZnO. The rate constant of RhB degradation over Ag3PO4(3.0 wt.%)/ZnO is 3 times that of single-phase Ag3PO4. The optimal percentage of Ag3PO4 in the composite is 3.0 wt.%. It is proposed that the radical dotOH radicals produced in the valence band of ZnO play the leading role in the photocatalytic degradation of Rhodamine B by Ag3PO4/ZnO systems under visible light irradiation.