Supported AuCu Alloy Nanoparticles for the Preferential Oxidation of CO (CO-PROX)

Author(s)

Rodrigues Fiuza, Tanna Elyn ^[1] ; Zanchet, Daniela ^[1]

Affiliation

^[1] Univ Campinas UNICAMP, Inst Chem, POB 6154, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: ACS APPLIED NANO MATERIALS; v. 3, n. 1, p. 923-934, JAN 2020.
• Web of Science Citations: 0

Abstract

The insertion of copper into the gold lattice forming gold-copper (AuCu) nanoalloys enhances the gold catalytic performance in reactions such as CO oxidation. Here, we compared the catalytic performance of 6 nm AuCu nanoparticles (NPs) supported on SiO2 (AuCu\_SiO2), a nonreducible oxide, and CeO2 (AuCu\_CeO2), a reducible one, under preferential oxidation of CO (CO-PROX). Under reaction conditions, the support nature impacted on the stabilization of different species on the catalyst surface. The AuCu\_CeO2 was both more active and more stable, which was associated with the ability of CeO2 to stabilize the AuCu alloy phase under reaction conditions. (AU)

• FAPESP's process: 11/50727-9 - Development of systems for hydrogen production and for the generation and utilization of electrochemical energy
• Grantee: Ernesto Rafael Gonzalez
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants