The synthesis of Ag3PO4/g-C3N4 nanocomposites and the application in the photocatalytic degradation of bisphenol A under visible light irradiation
The synthesis of Ag3PO4/g-C3N4 nanocomposites and the application in the photocatalytic degradation of bisphenol A under visible light irradiation
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DOI：
10.1016/j.jallcom.2018.03.251
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发表时间：
2018-06
影响因子：
6.2
通讯作者：
J. Mei;Dapeng Zhang;Nana Li;Meixing Zhang;Xinyue Gu;Shengchao Miao;Shihai Cui;Jing Yang
中科院分区：
文献类型：
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作者：
J. Mei;Dapeng Zhang;Nana Li;Meixing Zhang;Xinyue Gu;Shengchao Miao;Shihai Cui;Jing Yang
The high-efficient photocatalytic material Ag3PO4/g-C3N4was synthesized through calcination and precipitation methods. The physico-chemical properties of the material were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), ultraviolet–visible (UV–Vis) diffuse reflectance spectroscopy (DRS) photoluminescence spectra (PL) and Brunauer-Emmett-Teller (BET) surface area test. The morphology analysis indicated that Ag3PO4particles were heterogeneously dispersed on the surface of layered g-C3N4. The Ag3PO4/g-C3N4nanocomposites were applied in the photodegradation of bisphenol A under the visible light irradiation. The effects of the material proportion, the initial concentration of BPA, and the salinity on the degradation were discussed. The results showed that 92.8% bisphenol A (10 mg/L) can be photodegraded under 3 h irradiation by Ag3PO4/g-C3N4with 25% Ag3PO4mass ratio. The photodegradation kinetics and possible photocatalytic mechanism were discussed. The active specie ·O2−was found to play a key role during the photocatalytic reaction. The reaction mechanism was described based on valence band, conduction band energy levels and reduction potentials of oxygen and hydroxyl radicals.
