A novel Cr2O3/Cr-doped g-C3N4 photocatalyst with a narrowed band gap for efficient photodegradation of tetracycline
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2024-04-01
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en
Pages
11
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Catalysis Today, Volume 431
Abstract
Two significant strategies for enhancing photocatalyst performance are heterojunction construction and band gap modulation, but up until now, these methods have typically been treated separately. This work examines a strategy combining the heterojunction with a mid-gap state to prepare a novel Cr2O3 modified Cr-doped g-C3N4 photocatalyst for antibiotics degradation. According to the characterization results, the integration of Cr 3d orbital energy level into the original band gap of g-C3N4 results in the formation of Cr-doped g-C3N4, leading to a reduction in the band gap from 2.80 eV to 2.36 eV. Besides, the constructed Z-type heterojunction enhances the separation of photoinduced carriers. The degradation experiments of tetracycline proved the significant enhancement in the photocatalytic performance of the prepared catalyst. In addition, the degradation effect of the prepared catalyst on tetracycline in micro-polluted lake water was also investigated, revealing the applicability of the catalyst in the purification of natural water environments.Description
Publisher Copyright: © 2024
Keywords
Environmental restoration, Photocatalysis, Tetracycline degradation, Visible light, Z-type heterojunction
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Citation
Wang, S, Chen, H, Lin, Q, Lu, Q, Lv, W, Wang, C, Yu, L, Li, Y & Li, Y 2024, ' A novel Cr 2 O 3 /Cr-doped g-C 3 N 4 photocatalyst with a narrowed band gap for efficient photodegradation of tetracycline ', Catalysis Today, vol. 431, 114613 . https://doi.org/10.1016/j.cattod.2024.114613