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Issue 41, 2017, Issue in Progress
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Hexagonal AgBr crystal plates for efficient photocatalysis through two methods of degradation: methyl orange oxidation and CrVI reduction

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Abstract

Semiconductor-based photocatalysts have been proposed owing to their potential applications in contaminated water remediation, where a silver halide exhibits more attractive performance. Herein, a hexagonal AgBr crystal plate has been synthesized through a facile solvothermal technique, which demonstrated high efficiency for wastewater management through two degradation pathways in the oxidation of methyl orange (MO) and the photo-reduction of hexavalent chromium (CrVI). In order to concretely evaluate the photocatalytic performance, reaction rate constants (κ) of MO and CrVI were calculated to be 0.43 min−1 (>400 nm), 0.73 min−1 (AM 1.5) and 0.01 min−1 (>400 nm), 0.05 min−1 (AM 1.5), which were calculated to be 2.9 and 7.7 times that of the irregular AgBr, respectively. Furthermore, the corresponding mechanisms were also put forward to deeply understand each photocatalytic process.

Graphical abstract: Hexagonal AgBr crystal plates for efficient photocatalysis through two methods of degradation: methyl orange oxidation and CrVI reduction

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Publication details

The article was received on 25 Feb 2017, accepted on 21 Apr 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7RA02354E
RSC Adv., 2017,7, 25725-25731
  • Open access: Creative Commons BY license
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    Hexagonal AgBr crystal plates for efficient photocatalysis through two methods of degradation: methyl orange oxidation and CrVI reduction

    H. Zheng, P. Li, L. Gao and G. Li, RSC Adv., 2017, 7, 25725
    DOI: 10.1039/C7RA02354E

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