Breaking Symmetry of Carbon Nitride Skeleton by Embedding Pyridine Ring to Promote Photocatalytic Performance DOI
Wei‐De Zhang,

Shuang Tang,

Xue-Lian Hu

и другие.

Опубликована: Янв. 1, 2023

Breaking symmetry of polymeric carbon nitride (CN) skeleton by heteroatomic substitution can induce in-plane polar electric field, thus promoting the migration and separation photoexcited charge carriers. Herein, a carbon-doped CN (pyCN) embedding pyridine ring was prepared through modification strategy. Owing to n→π* electron transition formed obtained pyCN displayed obvious extended optical absorption photoinduced efficiency in comparison with pure CN. The optimized photocatalytic H2 evolution rate over reached 242.9 μmol·h−1, which is 6 times that TEOA as sacrifice. Additionally, maximum wavelength for performing capacity extends 550 nm from 450 CN, demonstrating an improved sun light utilization after modification. In addition, showed synergistic oxidation bisphenol A (BPA) during hydrogen generation under visible light. conversion BPA 18.7% 24 h according external standard analysis. This work provides efficient approach enhancing inhibiting recombination higher performance wilder applications.

Язык: Английский

Breaking Symmetry of Carbon Nitride Skeleton by Embedding Pyridine Ring to Promote Photocatalytic Performance DOI
Wei‐De Zhang,

Shuang Tang,

Xue-Lian Hu

и другие.

Опубликована: Янв. 1, 2023

Breaking symmetry of polymeric carbon nitride (CN) skeleton by heteroatomic substitution can induce in-plane polar electric field, thus promoting the migration and separation photoexcited charge carriers. Herein, a carbon-doped CN (pyCN) embedding pyridine ring was prepared through modification strategy. Owing to n→π* electron transition formed obtained pyCN displayed obvious extended optical absorption photoinduced efficiency in comparison with pure CN. The optimized photocatalytic H2 evolution rate over reached 242.9 μmol·h−1, which is 6 times that TEOA as sacrifice. Additionally, maximum wavelength for performing capacity extends 550 nm from 450 CN, demonstrating an improved sun light utilization after modification. In addition, showed synergistic oxidation bisphenol A (BPA) during hydrogen generation under visible light. conversion BPA 18.7% 24 h according external standard analysis. This work provides efficient approach enhancing inhibiting recombination higher performance wilder applications.

Язык: Английский

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