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author:

Yu, C.-L. (Yu, C.-L..) [1] | Wei, L.-F. (Wei, L.-F..) [2] | Li, J.-D. (Li, J.-D..) [3] | He, H.-B. (He, H.-B..) [4] | Fang, W. (Fang, W..) [5] | Zhou, W.-Q. (Zhou, W.-Q..) [6]

Indexed by:

Scopus PKU CSCD

Abstract:

Graphene oxide (GO) was fabricated from graphite powder by Hummers oxidation method and then, under ultrasonic irradiation, a series of GO/Ag3PO4 composite photocatalysts (4% (w, mass fraction) GO/Ag3PO4, 8% GO/Ag3PO4, 16% GO/Ag3PO4, 32% GO/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 GO content on the photocatalytic activity of Ag3PO4 was evaluated by photocatalytic degradation of methyl orange (MO) under visible light irradiation. The results show that GO can be easily dispersed into Ag3PO4, producing a well-connected GO/Ag3PO4 composite. Coupling of GO largely enhanced the surface area of the catalyst and the adsorption of MO. At the optimal GO content (16%), the degradation rate of MO over GO/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 GO, which increased the surface area and suppressed the recombination rate of electron-hole (e-/h+) pairs and generated greater numbers of active free radicals. ©Editorial office of Acta Physico-Chimica Sinica.

Keyword:

Active free radical; Ag3PO4; Coupling; Graphene oxide; Methyl orange; Photocatalytic activity

Community:

  • [ 1 ] [Yu, C.-L.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China
  • [ 2 ] [Wei, L.-F.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China
  • [ 3 ] [Wei, L.-F.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Li, J.-D.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China
  • [ 5 ] [He, H.-B.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China
  • [ 6 ] [Fang, W.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China
  • [ 7 ] [Zhou, W.-Q.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi Province 341000, China

Reprint 's Address:

  • [Yu, C.-L.]School of Metallurgy and Chemical Engineering, Jiangxi University of Science and TechnologyChina

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Source :

Acta Physico - Chimica Sinica

ISSN: 1000-6818

Year: 2015

Issue: 10

Volume: 31

Page: 1932-1938

0 . 8 4 4

JCR@2015

1 0 . 8 0 0

JCR@2023

ESI HC Threshold:265

JCR Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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