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

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

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)11510-11520
Number of pages11
JournalACS Applied Energy Materials
Volume6
Issue number22
DOIs
StatePublished - 27 Nov 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society

Funding

We gratefully acknowledge the support of the CNPq (Brazilian National Council for Scientific and Technological Development, project 442575/2019-0) and FINEP (Financier of Studies and Projects, project 01.17.0021.00). The authors thank the Agronano Network (Embrapa Research Network), the Agroenergy Laboratory, and the National Nanotechnology Laboratory for Agribusiness (LNNA) for providing institutional support and facilities. We also thank the financial support of FAPESP - São Paulo Research Foundation (2018/01258-5, 2022/10255-5, and 2013/07296-2). We gratefully acknowledge the support of the CNPq (Brazilian National Council for Scientific and Technological Development, project 442575/2019-0) and FINEP (Financier of Studies and Projects, project 01.17.0021.00). The authors thank the Agronano Network (Embrapa Research Network), the Agroenergy Laboratory, and the National Nanotechnology Laboratory for Agribusiness (LNNA) for providing institutional support and facilities. We also thank the financial support of FAPESP – São Paulo Research Foundation (2018/01258-5, 2022/10255-5, and 2013/07296-2).

FundersFunder number
Agroenergy Laboratory
Agronano Network
Embrapa Research Network
LNNA
National Nanotechnology Laboratory for Agribusiness
Fundação de Amparo à Pesquisa do Estado de São Paulo2013/07296-2, 2018/01258-5, 2022/10255-5
Conselho Nacional de Desenvolvimento Científico e Tecnológico442575/2019-0
Financiadora de Estudos e Projetos01.17.0021.00

    Keywords

    • CO-to-CO
    • Zn-based heterostructures
    • d-block metal oxides
    • electrochemical CO reduction
    • flow-cell

    Fingerprint

    Dive into the research topics of 'Exploring Heterostructures of D-Block Metal Oxides Coupled to ZnO for the Electrochemical Reduction of CO2'. Together they form a unique fingerprint.

    Cite this