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- W4281620193 abstract "It is an urgent and onerous task to develop catalysts for photocatalytic reduction of Cr(VI) in wastewater under wide pH range. In this work, a novel hierarchical Z-scheme MnO2/MnIn2S4 (MISO) heterojunction photocatalyst with MnIn2S4 nanosheets growing on the surface of β-MnO2 nanorods is constructed for efficient photocatalytic reduction of Cr(VI). The optimized 2.0-MISO photocatalyst exhibits the almost 100% reduction efficiency in the pH range of 2.1–5.6 under visible light irradiation, and the apparent rate constant is 0.05814 min−1, which is 29.96 and 3.27 times higher than the pure β-MnO2 and MnIn2S4, respectively. A efficient photocatalytic reduction of Cr(VI) to Cr(III) species on 2.0-MISO photocatalyst in actual industry wastewater (286.7 mg/L) up to 99.8% is achieved. Under natural light, the 2.0-MISO photocatalyst also shows rapid reduction of Cr(VI) species. The photocorrosion of MnIn2S4 was significantly hindered by the construction of heterojunction. And the O2− and e− species are the main active species during the Cr(VI) photoreduction process. The connection mode between MnIn2S4 and β-MnO2 is verified by DFT calculations and a possible photocatalytic mechanism is also proposed." @default.
- W4281620193 created "2022-06-13" @default.
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- W4281620193 date "2022-11-01" @default.
- W4281620193 modified "2023-10-16" @default.
- W4281620193 title "MnIn2S4 nanosheets growing on rods-like β-MnO2 via covalent bonds as high-performance photocatalyst for boosting Cr(VI) photocatalytic reduction under visible light irradiation: Behavior and mechanism study" @default.
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- W4281620193 doi "https://doi.org/10.1016/j.jcis.2022.06.015" @default.
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