Issue 32, 2024

Impact of imine bond orientations on photocatalytic hydrogen generation of benzothiadiazole-based covalent organic frameworks constructed using “two-in-one” monomers

Abstract

Covalent organic frameworks (COFs) have received great attention for their promising application as photocatalysts for photocatalytic hydrogen generation. However, constructing COFs with excellent photocatalytic performances and building the structure–property-relationship is still a great challenge. Herein, two benzothiadiazole-based COFs, HIAM-0026 and HIAM-0026v, were designed and prepared with different imine bond orientations via a “two-in-one” strategy. Under visible-light illumination, HIAM-0026 shows much higher photocatalytic performance (14.10 mmol g−1 h−1) than that of HIAM-0026v (8.70 mmol g−1 h−1) with the amine groups close to the benzothiadiazole core in the organic building unit. The transient photocurrent responses and the electrochemical impedance spectroscopy indicate that HIAM-0026 exhibits higher charge separation and immigration rates. This work demonstrates that imine bond orientations significantly affect photocatalytic hydrogen generation and sheds light on the rational design and synthesis of benzothiadiazole-based COFs for efficient hydrogen generation.

Graphical abstract: Impact of imine bond orientations on photocatalytic hydrogen generation of benzothiadiazole-based covalent organic frameworks constructed using “two-in-one” monomers

Supplementary files

Article information

Article type
Communication
Submitted
15 Лип 2024
Accepted
31 Лип 2024
First published
01 Сер 2024

J. Mater. Chem. C, 2024,12, 12249-12253

Impact of imine bond orientations on photocatalytic hydrogen generation of benzothiadiazole-based covalent organic frameworks constructed using “two-in-one” monomers

Z. Wang, J. Guo, S. Sun, C. Han and X. Liu, J. Mater. Chem. C, 2024, 12, 12249 DOI: 10.1039/D4TC02995J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements