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B-Doped g-C3N4/Black TiO2 Z-Scheme Nanocomposites for Enhanced Visible-Light-Driven Photocatalytic Performance.

ABSTRACT: Black TiO2 with abundant oxygen vacancies (OVs)/B-doped graphitic carbon nitride (g-C3N4) Z-scheme heterojunction nanocomposites are successfully prepared by the one-pot strategy. The OVs can improve not only photogenerated carrier separation, but also the sorption and activation of antibiotic compounds (tetracycline hydrochloride, TC). The prepared heterojunction photocatalysts with a narrow bandgap of ∼2.13 eV exhibit excellent photocatalytic activity for the degradation of tetracycline hydrochloride (65%) under visible light irradiation within 30 min, which is several times higher than that of the pristine one. The outstanding photocatalytic property can be ascribed to abundant OVs and B element-dope reducing the bandgap and extending the photo-response to the visible light region, the Z-scheme formation of heterojunctions preventing the recombination of photogenerated electrons and holes, and promoting their effective separation.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9920186 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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B-Doped g-C<sub>3</sub>N<sub>4</sub>/Black TiO<sub>2</sub> Z-Scheme Nanocomposites for Enhanced Visible-Light-Driven Photocatalytic Performance.

Wang Yuwei Y   Xu Kelin K   Fan Liquan L   Jiang Yongwang Y   Yue Ying Y   Jia Hongge H  

Nanomaterials (Basel, Switzerland) 20230128 3

Black TiO<sub>2</sub> with abundant oxygen vacancies (OVs)/B-doped graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) Z-scheme heterojunction nanocomposites are successfully prepared by the one-pot strategy. The OVs can improve not only photogenerated carrier separation, but also the sorption and activation of antibiotic compounds (tetracycline hydrochloride, TC). The prepared heterojunction photocatalysts with a narrow bandgap of ∼2.13 eV exhibit excellent photocatalytic activity for the d  ...[more]

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