Novel few-layer MoS2/Ag3PO4 composites were fabricated. The results indicated that Ag3PO4 nanoparticles were directly formed on the surface of few-layer MoS2. The physical and chemical properties of the few-layer MoS2/Ag3PO4 composite photocatalysts were tested in order to investigate the effects of few-layer MoS2 on the photocatalytic activity of Ag3PO4. The photocatalytic activity of the few-layer MoS2/Ag3PO4 composites was evaluated by the photocatalytic degradation of Rhodamine B (RhB) and bisphenol A (BPA) under visible light irradiation. The photocatalytic activity of the few-layer MoS2/Ag3PO4 composites was higher than that of pure Ag3PO4. The optimal few-layer MoS2 content for the organic pollutant degradation of the heterojunction structures was determined. The synergic effect between few-layer MoS2 and Ag3PO4 was found to lead to an improved photogenerated carrier separation. The stability and the possible photocatalytic mechanism of the composites were also discussed.

The CeO 2 /Ag 3 PO 4 composite photocatalysts are synthesized by an in situ precipitation method. The XRD, FT-IR, XPS, TEM, EDS, and DRS are used to characterize the structure of the samples. The photocatalytic performance of the prepared samples is evaluated by the photocatalytic degradation of methylene blue (MB), rhodamine B (RhB), and ciprofloxacin (CIP). The results show that CeO 2 /Ag 3 PO 4 hybrid materials exhibit much higher photocatalytic activity than the Ag 3 PO 4 alone. The optimal CeO 2 content in CeO 2 /Ag 3 PO 4 composites is found to be molar ratio 1 wt%. Photocurrent response of CeO 2 /Ag 3 PO 4 (1 wt%) is about 1.5 times as high as that of the pure Ag 3 PO 4 . The increase of photocatalytic activity of CeO 2 /Ag 3 PO 4 composites could be mainly attributed to the heterojunction between CeO 2 and Ag 3 PO 4 . The trapping experiment has demonstrated that holes serve as the main active species for the degradation of MB under visible light irradiation. A photocatalytic mechanism is also proposed.

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