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In-Situ Fabricating V₂O₅/TiO₂-Carbon Heterojunction from Ti₃C₂ MXene as Highly Active Visible-Light Photocatalyst.

ABSTRACT: Titanium dioxide is a mainstream photocatalyst, but it still confronts great obstacles of poor visible light absorption and rapid recombination rate of photogenerated carriers. Herein, we describe the design of a highly active visible-light photocatalytic system of graphited carbon layers anchored V₂O₅/TiO₂ heterojunctions derived from Ti₃C₂ MXene, which demonstrates about 4.58 and 2.79 times higher degradation activity of MB under visible light (λ > 420 nm) than pure V₂O₅ and TiO₂-carbon. Combined with the characterization results, the formed V₂O₅/TiO₂ heterojunction promotes the separation of photogenerated carriers, while the graphitized carbon derived from MXene acts as an electronic reservoir to enhance the absorption of visible light. The ESR results show that superoxide radicals and hydroxyl radicals are the main active species in the reaction system. Therefore, we propose a possible mechanism model to provide a feasible idea for the subsequent design of high-efficiency photocatalysts for environmental treatment.

SUBMITTER: Xu W

PROVIDER: S-EPMC9147991 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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In-Situ Fabricating V2O5/TiO2-Carbon Heterojunction from Ti3C2 MXene as Highly Active Visible-Light Photocatalyst.

Xu Wentao W Shu Guoqiang G Zhang Shihui S Song Lei L Ma Kui K Yue Hairong H

Nanomaterials (Basel, Switzerland) 20220523 10

Titanium dioxide is a mainstream photocatalyst, but it still confronts great obstacles of poor visible light absorption and rapid recombination rate of photogenerated carriers. Herein, we describe the design of a highly active visible-light photocatalytic system of graphited carbon layers anchored V2O5/TiO2 heterojunctions derived from Ti3C2 MXene, which demonstrates about 4.58 and 2.79 times higher degradation activity of MB under visible light (λ > 420 nm) than pure V2O5 and TiO2-carbon. Combi ...[more]

PMID: 35630998

Dataset Information

In-Situ Fabricating V₂O₅/TiO₂-Carbon Heterojunction from Ti₃C₂ MXene as Highly Active Visible-Light Photocatalyst.

Publications

In-Situ Fabricating V<sub>2</sub>O<sub>5</sub>/TiO<sub>2</sub>-Carbon Heterojunction from Ti<sub>3</sub>C<sub>2</sub> MXene as Highly Active Visible-Light Photocatalyst.

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