Modulating Benzothiadiazole‐Based Covalent Organic Frameworks via Halogenation for Enhanced Photocatalytic Water Splitting
Tianjin University · University of Science and Technology of China · +2 more institutions
Abstract
Abstract Two‐dimensional covalent organic frameworks (2D COFs), an emerging class of crystalline porous polymers, have been recognized as a new platform for efficient solar‐to‐hydrogen energy conversion owing to their pre‐designable structures and tailor‐made functions. Herein, we demonstrate that slight modulation of the chemical structure of a typical photoactive 2D COF (Py‐HTP‐BT‐COF) via chlorination (Py‐ClTP‐BT‐COF) and fluorination (Py‐FTP‐BT‐COF) can lead to dramatically enhanced photocatalytic H 2 evolution rates (HER=177.50 μmol h −1 with a high apparent quantum efficiency (AQE) of 8.45 % for Py‐ClTP‐BT‐COF). Halogen modulation at the photoactive benzothiadiazole moiety can efficiently suppress charge…
Citation impact
- FWCI
- 22.40
- Percentile
- 100%
- References
- 60
Authors
8- WCWeiben Chen
Tianjin University
- LWLei Wang
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- DMDaize Mo
Southern University of Science and Technology
- FHFeng He
Southern University of Science and Technology
- ZWZhilin Wen
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
Topics & keywords
- Photocatalysis
- Moiety
- Covalent bond
- Halogenation
- Halogen
- Energy conversion efficiency
- Materials science
- Quantum efficiency
- Affordable and clean energy