Title:	Perylenediimide-Incorporated Covalent Triazine Framework: A Highly Conductive Carbon Support for Copper Single-Atom Catalysts in Electrocatalytic CO2 Conversion.
Authors:	RAJA, S. SILVA, G. T. S. T. da REIS, E. A. CRUZ, J. C. da SILVA, A. B. ANDRADE, M. B. PERIYASAMI, G. KARTHIKEYAN, P. PEREPICHKA, I. F. MASCARO, L. H. RIBEIRO, C.
Affiliation:	SEBASTIAN RAJA, FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR) FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR) UNIVERSITY OF SÃO PAULO (USP) ANELISSE BRUNCA SILVA, FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR) UNIVERSITY OF SÃO PAULO (USP) GOVINDASAMI PERIYASAMI, COLLEGE OF SCIENCE, KING SAUD UNIVERSITY PERUMAL KARTHIKEYAN, OHIO STATE UNIVERSITY SILESIAN UNIVERSITY OF TECHNOLOGY LUCIA HELENA MASCARO, FEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR) CAUE RIBEIRO DE OLIVEIRA, CNPDIA.
Date Issued:	2024
Citation:	Energy & Fuels, v. 37, 2024.
Pages:	19113−19123
Description:	ABSTRACT: Here, we show that a perylenediimide-incorporated covalent triazine framework (PDI-CTF) leads to an adequate conductive carbon support for copper single-atom catalysts (Cu-SACs), allowing the selective electroreduction of CO2 to methanol. CTF-Cu-SACs converted CO2 into methanol with a faradaic efficiency of 72.6% at a low overpotential (0.2 V vs RHE). While increasing the overpotential (0.2 to −0.4 V vs RHE), CTF-Cu-SACs promoted syngas (CO and H2) production with faradaic efficiencies of 53.2 and 39.5%, respectively. Moreover, CTF-Cu-SACs led to robust catalytic stability for 20 h of continuous electrolysis in an aqueous solution. Notably, it was observed that additional nitrogen doping to the PDI-CTF profoundly influences product selectivity, possibly due to the synergetic effect of highly conductive pyrolyzed CTF and N-chelating ligands with rich active sites. Our results indicate that the PDI-CTF-based Cu-SACs provide abundant active sites for CO2 adsorption, thus enhancing intermolecular ion and charge transportation that efficiently reduces CO2 into methanol in an aqueous system.
Keywords:	Major environmental threat
DOI:	https://doi.org/10.1021/acs.energyfuels.3c03268
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPDIA)