Citation: YAN Xin, HUI Xiao-Yan, GAO Qiang YU, Gao-Jie MO, MO Yun-Cheng, YE Zi-Meng, LI Jun-Chun, MA Zi-Yi, SUN Guo-Dong. Synthesis and Visible Light Photocatalytic Performance of Ag₃PO₄/MoS₂ Nanosheets Composite Photocatalyst[J]. Chinese Journal of Inorganic Chemistry, ;2017, 33(10): 1782-1788. doi: 10.11862/CJIC.2017.212 shu

Synthesis and Visible Light Photocatalytic Performance of Ag₃PO₄/MoS₂ Nanosheets Composite Photocatalyst

School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China

Corresponding author: YAN Xin, xinyan@chd.edu.cn
Received Date: 16 May 2017
Revised Date: 8 August 2017

Figures(9)

The Ag₃PO₄/MoS₂ nanosheets composite photocatalyst was successfully prepared via a mechanical milling method. The structure of composite photocatalyst was characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-Vis diffuse reflectance spectroscopy (DRS) and photoluminescence spectroscopy (PL). The results indicate that Ag₃PO₄ nanoparticles are successfully coupled into the surface of MoS₂ nanosheets. The photocatalytic activity of composite photocatalyst was evaluated by the degradation of organic methylene blue (MB) under visible light irradiation. The obtained Ag₃PO₄/1%MoS₂ nanosheets composite photocatalyst exhibite the optimal photocatalytic performance, which can degrade almost all MB under visible-light irradiation within 30 min. The kinetic constant of MB degradation with Ag₃PO₄/1%MoS₂ nanosheets composite photocatalyst is about 2 times as high as that of the pure Ag₃PO₄. The enhanced photocatalytic activity is mainly attributed to the efficient separation and transport of photo-induced electron-hole pairs in the heterojunction structure. The recycling experiment shows that the photocatalytic activity of Ag₃PO₄/1%MoS₂ nanosheets composite photocatalyst is maintained at about 84% after 5 cycles, while the photocatalytic activity of the pure Ag₃PO₄ decreases to 35%. The high photocatalytic stability is due to the successful inhibition of the photo-corrosion of Ag₃PO₄ by transferring the photo-generated electrons of Ag₃PO₄ to MoS₂ nanosheets.
- Ag₃PO₄,
- MoS₂ nanosheets,
- mechanical milling,
- visible light photocatalysis
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Synthesis and Visible Light Photocatalytic Performance of Ag₃PO₄/MoS₂ Nanosheets Composite Photocatalyst