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author:

Liu Ren-Yue (Liu Ren-Yue.) [1] | Wu Zhen (Wu Zhen.) [2] | Bai Yu (Bai Yu.) [3] | Yu Chang-Lin (Yu Chang-Lin.) [4] | Li Jia-De (Li Jia-De.) [5] | Shu Qing (Shu Qing.) [6] | Yang Kai (Yang Kai.) [7]

Indexed by:

Scopus SCIE PKU CSCD

Abstract:

BiVO4 microsheets with particle size of 1 similar to 2 mu m were fabricated by hydrothermal method. Then, Ag2CO3/BiVO4 composite microsheet photocatalysts with different contents of Ag2CO3 were synthesized via precipitation method. The products were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform-infrared (FTIR) spectroscopy, UV-Vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) emission spectroscopy, transient photocurrent-time response. The photocatalytic activity of the samples were evaluated by photocatalytic degradation of rhodamine B under visible light irradiation. The results showed that loading of Ag2CO3 was beneficial to improve the specific surface area and surface properties of the catalyst. Activity test indicated that BiVO4 loaded with optimal 10%(w/w)Ag2CO3 resulted in 4.4 times increase in activity with respect to BiVO4 under visible light illumination. The results of photoluminescence (PL) emission spectroscopy and transient photocurrent-time response showed that the coupled Ag2CO3 can effectively inhibit the recombination of photogenerated electrons and holes. Active radicals trapping experiments indicated that hole and hydroxyl radicals were the reactive oxygen species in this Ag2CO3/BiVO4 system. The enhancement in activity of Ag2CO3/BiVO4 could be attributed to the heterojunction structure formed by Ag2CO3 with wider band gap and BiVO4 with narrower band gap. This heterojunction effectively restrained the recombination of photogenerated electrons and holes. Moreover, the suitable energy band structure brought about strong oxidation ability due to more holes were produced.

Keyword:

Ag2CO3 BiVO4 microsheet heterojunction hole visible light

Community:

  • [ 1 ] [Liu Ren-Yue]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 2 ] [Wu Zhen]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 3 ] [Bai Yu]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 4 ] [Yu Chang-Lin]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 5 ] [Li Jia-De]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 6 ] [Shu Qing]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 7 ] [Yang Kai]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China
  • [ 8 ] [Yang Kai]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

Reprint 's Address:

  • [Yu Chang-Lin]Jiangxi Univ Sci & Technol, Sch Met & Chem Engn, Ganzhou 341000, Jiangxi, Peoples R China

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Source :

CHINESE JOURNAL OF INORGANIC CHEMISTRY

ISSN: 1001-4861

CN: 32-1185/O6

Year: 2017

Issue: 3

Volume: 33

Page: 519-527

0 . 6 5 4

JCR@2017

0 . 8 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:226

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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