Exploring Heterostructures of D-Block Metal Oxides Coupled to ZnO for the Electrochemical Reduction of CO₂

Autor(es)

Stamatelos, Ilias ; da Silva, Gelson T. S. T. ; Ribeiro, Caue ; Shviro, Meital

• Tipo de documento: Artigo Científico
• Fonte: ACS APPLIED ENERGY MATERIALS; v. 6, n. 22, p. 11-pg., 2023-11-14.

Resumo

Feasible electrochemical CO2 reduction (ECR) requires accessible and efficient catalyst materials. Herein, we prepared ZnO-based catalysts decorated with various d-block metal oxides (Fe, Co, Ni, Cu). The ECR performance of the heterostructured catalyst materials was evaluated by using a flow-cell configuration. Our findings indicate that ZnO is an active catalyst substrate with tunable selectivity and stability, which depend on the formed heterostructures' properties. We assessed and quantified the effect of the different d-block metals on the ECR activity of the composite catalyst. The Cu-ZnO catalyst exhibited a stability of 30 h and a selectivity of 77% for CO at a current density of 100 mA cm(-2). This work aimed to provide a fundamental understanding of composite heterostructured materials' properties and electrochemical behavior. We demonstrated that heterostructure engineering is a promising and cost-effective strategy for developing ECR catalysts with enhanced stability. (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: 18/01258-5 - Novos processos catalíticos e fotocatalíticos para a conversão direta de metano e CO2 em produtos
• Beneficiário: José Maria Correa Bueno
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• 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