In-plane implanting carbon rings into carbon nitride to intrigue nonradical photodegradation
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(Published version)
Date
2024
Authors
Yao, Y.
Wang, Y.
Lu, T.
Zhang, J.
Hu, K.
Zhang, H.
Pukala, T.
Liu, Y.
Duan, X.
Wang, S.
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Journal Title
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Journal article
Citation
Applied Catalysis B: Environmental, 2024; 342:123363-1-123363-11
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Yu Yao, Yantao Wang, Teng Lu, Jinqiang Zhang, Kunsheng Hu, Huayang Zhang, Tara Pukala, Yun Liu, Xiaoguang Duan, Shaobin Wang
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Abstract
Photocatalysis has emerged as a prevailing and clean technology for water purification. In this work, we developed a facile approach for fabricating in-plane carbon/carbon nitride heterojunctions (CN-PDs) that induced 100 % photodegradation of naproxen under visible light irradiation in a nonradical manner. Experimental and simulation results collectively revealed that the incorporated carbon rings in carbon nitride (CN) significantly accelerate the charge dynamics of excitons, leading to a higher concentration of hot carriers. In addition, a lower intersystem crossing energy barrier was observed for the unique nanostructure compared to pristine CN, enabling an efficient energy-transfer-mediated oxygen activation to selectively generate singlet oxygen. An optimized composition of carbon rings (CN-PDs0.1) enhanced the photodegradation of naproxen compared to CN. This study established the structure-activity relationships in selective photooxidation. The findings will benefit advanced design of high-performance nonmetal photocatalysts for organic wastewater treatment.
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Dissertation Note
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Available online 5 October 2023
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© 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).