Azobenzene-equipped Covalent triazine polymers for Visible-Light-Driven photocatalytic reduction of CO2 to CH4

Huang, Qi, Zhan, Zhen, Qiao, Yuanting, Pan, Xueting, Xu, Shaojun, Tan, Bien and Wu, Chunfei 2024. Azobenzene-equipped Covalent triazine polymers for Visible-Light-Driven photocatalytic reduction of CO2 to CH4. Fuel 361 , 130646. 10.1016/j.fuel.2023.130646

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Abstract

Covalent triazine polymers, as large π conjugated, highly porous, nitrogen riched organic semiconductors, can play a key role in tackling the fuel energy crisis and global warming issues. However, their development in photocatalytic CO2 reduction is still rare. More effective strategies to enhance CO2 reduction activity need to be explored. Herein, different amounts of azobenzene pendants functionalized CTPs: Azo-CTP0, Azo-CTP1, Azo-mCTP1 and Azo-CTP2, were fabricated for photocatalytic CO2 reduction with Pd loaded. Among them, Azo-mCTP1 displayed the highest CO2 uptake capacity up to 48.2 cm3 g−1 (2.15 mmol g−1) at 273 K, and the highest CH4 evolution rate in the water system, with selectivity highly up to 97 %. Apart from that, the azobenzene functionalization of Azo-CTP0 could significantly boost the CO2 reduction efficiency by 4 times. Therefore, this study provides a potentially general approach for accurately modifying organic semiconductors to enhance photocatalytic performance.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Elsevier
ISSN:	0016-2361
Date of First Compliant Deposit:	28 March 2024
Date of Acceptance:	12 December 2023
Last Modified:	12 Apr 2024 15:30
URI:	https://orca.cardiff.ac.uk/id/eprint/167598

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