| Texto completo | |
| Autor(es): Mostrar menos - |
Raja, Sebastian
;
da Silva, Gelson T. S. T.
;
Reis, Eduardo A.
;
da Cruz, Jean C.
;
Silva, Anelisse Brunca
;
Andrade, Marcelo B.
;
Periyasami, Govindasami
;
Karthikeyan, Perumal
;
Perepichka, Igor F.
;
Mascaro, Lucia Helena
;
Ribeiro, Caue
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ENERGY & FUELS; v. 37, n. 23, p. 11-pg., 2023-12-07. |
| Resumo | |
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 H-2) 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. (AU) | |
| Processo FAPESP: | 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 17/11986-5 - Geração e Armazenamento de Novas Energias: trazendo desenvolvimento tecnológico para o país |
| Beneficiário: | Ana Flávia Nogueira |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 22/10255-5 - Arquiteturas baseadas em fosfetos e nitretos metálicos para conversão foto(eletro)química de CO2 em compostos C2+ |
| Beneficiário: | Gelson Tiago dos Santos Tavares da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |