Enhancing the Carbon Monoxide Oxidation Performance through Surface Defect Enrichment of Ceria-Based Supports for Platinum Catalyst.

ABSTRACT: Effective synthesis and application of single-atom catalysts on supports lacking enough defects remain a significant challenge in environmental catalysis. Herein, we present a universal defect-enrichment strategy to increase the surface defects of CeO₂-based supports through H₂ reduction pretreatment. The Pt catalysts supported by defective CeO₂-based supports, including CeO₂, CeZrO_x, and CeO₂/Al₂O₃ (CA), exhibit much higher Pt dispersion and CO oxidation activity upon reduction activation compared to their counterpart catalysts without defect enrichment. Specifically, Pt is present as embedded single atoms on the CA support with enriched surface defects (CA-HD) based on which the highly active c

SUBMITTER: Xie S 

PROVIDER: S-EPMC11256741 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature