Issue 35, 2023

Benzothiadiazole and its derivative-based sp2 carbon-conjugated covalent organic frameworks for photocatalytic hydrogen generation

Abstract

Designing crystalline porous materials with efficient hydrogen evolution is a promising strategy to obtain green energy. Covalent organic frameworks have been regarded as outstanding photocatalysts for solar-to-hydrogen conversion. In particular, sp2 carbon-conjugated covalent organic frameworks (sp2c-COFs), via carbon–carbon double bond linkage, have good chemical and physical stability, which has attracted great attention in recent years. Herein, we design and synthesize two series of benzothiadiazole and its derivative-based isoreticular sp2c-COFs (HIAM-0001 to HIAM-0006) for photocatalytic hydrogen generation. The experimental results show that benzothiadiazole-based COFs exhibit much higher photocatalytic activity compared with its derivative-based ones possessing much broader light-harvesting ranges. The average hydrogen evolution rates of HIAM-0001 and HIAM-0004 are up to 1410 μmol g−1 h−1 and 1526 μmol g−1 h−1 under visible-light illumination (λ > 420 nm), respectively. This work presents the relevant background for the study of the structure–property relationship in benzothiadiazole and its derivative-based sp2c-COFs, and also provides a new guidance for the rational design and development of efficient photocatalysts for hydrogen generation.

Graphical abstract: Benzothiadiazole and its derivative-based sp2 carbon-conjugated covalent organic frameworks for photocatalytic hydrogen generation

Supplementary files

Article information

Article type
Paper
Submitted
01 Jul 2023
Accepted
09 Aug 2023
First published
10 Aug 2023

J. Mater. Chem. C, 2023,11, 12000-12006

Benzothiadiazole and its derivative-based sp2 carbon-conjugated covalent organic frameworks for photocatalytic hydrogen generation

C. Han, X. Sun, X. Liang, L. Wang, H. Hu and X. Liu, J. Mater. Chem. C, 2023, 11, 12000 DOI: 10.1039/D3TC02305B

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