Noble metal-free porphyrin covalent organic framework layer for CO2 photoreduction to CO

Yuxia Hou; Haizeng Ma; Dan Zhu; Renlong Li; Ziyan Zhao; Chun-Xiang Li; Cheng-Xing Cui; Ji-Chao Wang

doi:10.1039/d4dt02658f

Noble metal-free porphyrin covalent organic framework layer for CO₂ photoreduction to CO

Dalton Trans. 2024 Nov 18. doi: 10.1039/d4dt02658f. Online ahead of print.

Authors

Yuxia Hou¹, Haizeng Ma¹, Dan Zhu², Renlong Li¹, Ziyan Zhao¹, Chun-Xiang Li¹, Cheng-Xing Cui¹, Ji-Chao Wang¹

Affiliations

¹ Department of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453003, China. [email protected].
² School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China.

PMID: 39555958
DOI: 10.1039/d4dt02658f

Abstract

The presence of greenhouse CO₂ gas in the atmosphere causes serious environmental issues. Consequently, the development of photocatalysts for reducing CO₂ is essential for mimicking artificial photosynthesis. In this study, we prepared a 5,15-di(4-aminophenty)-10,20-diphentyporphyrin copper (CuDAPP)-1,3,5-triformylphloroglucinol (TP)-covalent organic framework (COF) layer on a glass sheet via a layer-by-layer (LBL) method. The 2D CuDAPP-TP-COF layer was used as a photocatalyst for CO₂ reduction, and it demonstrated excellent photocatalytic activity under gas-solid conditions without sacrificial reagents, noble metals, or photosensitisers. The CO production yield was 282.6 μmol g^-1 under visible-light irradiation for 6 h, outperforming the raw material CuDAPP and a mixture of CuDAPP and TP, indicating a high application potential of the 2D porphyrin COF layer material in photocatalytic CO₂ reduction.