Metal‐Free Photocatalytic Hydrogenation Using Covalent Triazine Polymers

Hu, Yongpan; Huang, Wei; Wang, Hongshuai; He, Qing; Zhou, Yuan; Yang, Ping; Li, Youyong; Li, Yanguang

doi:10.1002/ange.202006618

Cited by 7 publications

(1 citation statement)

References 51 publications

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“…The fast recombination of photogenerated electrons and holes limited their photocatalytic activity. The incorporation of donor units (thiophene, [68] carbazole, [50] triphenylamine, [69] etc.) and acceptor units (benzothiadiazole, [70] triazine, [49] etc.)…”

Section: Photocatalytic Water Splittingmentioning

confidence: 99%

Covalent Triazine Frameworks (CTFs): Synthesis, Crystallization, and Photocatalytic Water Splitting

Sun

Tan

2023

Chemistry A European J

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Covalent Triazine Frameworks (CTFs) have received great attention from academia owing to their unique structure characteristics such as nitrogen‐rich structure, chemical stability, fully conjugated skeleton and high surface area; all these unique properties make CTFs attractive for widespread applications, especially for photocatalytic applications. In this review, we aim to provide recent advances in the CTFs preparation, and mainly focus on their photocatalytic applications. This review provides a comprehensive and systematic overview of the CTFs’ synthetic methods, crystallinity lifting strategies, and their applications for photocatalytic water splitting. Firstly, a brief background including the photocatalytic water splitting and crystallinity are provided. Then, synthetic methods related to CTFs and the strategies for enhancing the crystallinity are summarized and compared. After that, the general photocatalytic mechanism and the strategies to improve the photocatalytic performance of CTFs are discussed. Finally, the perspectives and challenges of fabricating high crystalline CTFs and designing CTFs with excellent photocatalytic performance are discussed, inspiring the development of CTF materials in photocatalytic applications.

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Section: Photocatalytic Water Splittingmentioning

confidence: 99%

Covalent Triazine Frameworks (CTFs): Synthesis, Crystallization, and Photocatalytic Water Splitting

Sun

Tan

2023

Chemistry A European J

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Ultrathin Crystalline Covalent‐Triazine‐Framework Nanosheets with Electron Donor Groups for Synergistically Enhanced Photocatalytic Water Splitting

et al. 2021

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Ultrathin nanosheets have great potential for photocatalytic applications, however, suffer from enlarged band gap and narrowed visible‐light‐responsive range due to the quantum confinement effect. Herein, we report a novel redox strategy for efficient preparation of ultrathin crystalline amide‐functionalized covalent‐triazine‐framework nanosheets (CTF NSs) with enhanced visible light absorption. The CTF NSs exhibited photocatalytic hydrogen (512.3 μmol h−1) and oxygen (12.37 μmol h−1) evolution rates much higher than that of pristine bulk CTF. Photocatalytic overall water splitting could be achieved with efficient stoichiometric H2 (5.13 μmol h−1) and O2 (2.53 μmol h−1) evolution rates under visible light irradiation. Experimental and theoretical analysis revealed that introduction of amide groups as electron donor optimized the band structure and improve its visible‐light absorption, hydrophilicity and carrier separation efficiency, thus resulting in the enhanced photocatalytic performance. The well‐dispersed CTF NSs could be easily cast onto a support as a thin film device and demonstrate excellent photocatalytic activity (25.7 mmol h−1 m−2 for hydrogen evolution).

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Ultrathin Crystalline Covalent‐Triazine‐Framework Nanosheets with Electron Donor Groups for Synergistically Enhanced Photocatalytic Water Splitting

et al. 2021

View full text Add to dashboard Cite

Ultrathin nanosheets have great potential for photocatalytic applications,however,suffer from enlarged band gap and narrowed visible-light-responsive range due to the quantum confinement effect. Herein, we report an ovel redox strategy for efficient preparation of ultrathin crystalline amidefunctionalizedc ovalent-triazine-framework nanosheets (CTF NSs) with enhanced visible light absorption. The CTF NSs exhibited photocatalytic hydrogen (512.3 mmol h À1 )a nd oxygen (12.37 mmol h À1 )e volution rates much higher than that of pristine bulk CTF.Photocatalytic overall water splitting could be achieved with efficient stoichiometric H 2 (5.13 mmol h À1 ) and O 2 (2.53 mmol h À1 )e volution rates under visible light irradiation. Experimental and theoretical analysis revealed that introduction of amide groups as electron donor optimized the band structure and improve its visible-light absorption, hydrophilicity and carrier separation efficiency,thus resulting in the enhanced photocatalytic performance.The well-dispersed CTF NSs could be easily cast onto asupport as athin film device and demonstrate excellent photocatalytic activity (25.7 mmol h À1 m À2 for hydrogen evolution).

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Metal‐Free Photocatalytic Hydrogenation Using Covalent Triazine Polymers

Cited by 7 publications

References 51 publications

Covalent Triazine Frameworks (CTFs): Synthesis, Crystallization, and Photocatalytic Water Splitting

Covalent Triazine Frameworks (CTFs): Synthesis, Crystallization, and Photocatalytic Water Splitting

Ultrathin Crystalline Covalent‐Triazine‐Framework Nanosheets with Electron Donor Groups for Synergistically Enhanced Photocatalytic Water Splitting

Ultrathin Crystalline Covalent‐Triazine‐Framework Nanosheets with Electron Donor Groups for Synergistically Enhanced Photocatalytic Water Splitting

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