Citation: YU Chang-Lin, WEI Long-Fu, LI Jia-De, HE Hong-Bo, FANG Wen, ZHOU Wan-Qin. Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance[J]. Acta Physico-Chimica Sinica, ;2015, 31(10): 1932-1938. doi: 10.3866/PKU.WHXB201509064 shu

Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance

1.
1 School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China;
2 State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, P. R. China

Received Date: 25 June 2015
Available Online: 6 September 2015
Fund Project: 国家自然科学基金资助项目(21067004, 21263005, 21567008) (21067004, 21263005, 21567008) 江西省自然科学基金青年科学基金计划(20133BAB21003) (20133BAB21003) 江西省教育厅高等学校科技落地计划项目(KJLD14046) (KJLD14046) 江西省青年科学家培养项目(20122BCB23015) (20122BCB23015)

Graphene oxide ( ) was fabricated from graphite powder by Hummers oxidation method and then, under ultrasonic irradiation, a series of /Ag₃PO₄ composite photocatalysts (4% (w, mass fraction) /Ag₃PO₄, 8% /Ag₃PO₄, 16% /Ag₃PO₄, 32% /Ag₃PO₄) were synthesized by a facile liquid deposition process. The products were characterized by N₂-physical adsorption, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectra, Fourier transform infrared (FT-IR) spectroscopg, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of content on the photocatalytic activity of Ag₃PO₄ was evaluated by photocatalytic degradation of methyl orange (MO) under visible light irradiation. The results show that can be easily dispersed into Ag₃PO₄, producing a well-connected /Ag₃PO₄ composite. Coupling of largely enhanced the surface area of the catalyst and the adsorption of MO. At the optimal content (16%), the degradation rate of MO over /Ag₃PO₄ was 83% after 120 min of light irradiation, exhibiting 7.5 times higher activity than that of pure Ag₃PO₄. The increase in photocatalytic activity and stability can be mainly attributed to the coupling of , which increased the surface area and suppressed the recombination rate of electron-hole (e^-/h⁺) pairs and generated greater numbers of active free radicals.
- Graphene oxide,
- Ag₃PO₄,
- Coupling,
- Photocatalytic activity,
- Methyl orange,
- Active free radical
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Preparation and Characterization of /Ag₃PO₄ Composite Photocatalyst and Its Visible Light Photocatalytic Performance