Fine-tuned local coordination environment of Pt single atoms on ceria controls catalytic reactivity.

ABSTRACT: Constructing single atom catalysts with fine-tuned coordination environments can be a promising strategy to achieve satisfactory catalytic performance. Herein, via a simple calcination temperature-control strategy, CeO₂ supported Pt single atom catalysts with precisely controlled coordination environments are successfully fabricated. The joint experimental and theoretical analysis reveals that the Pt single atoms on Pt₁/CeO₂ prepared at 550 °C (Pt/CeO₂-550) are mainly located at the edge sites of CeO₂ with a Pt-O coordination number of ca. 5, while those prepared at 800 °C (Pt/CeO₂-800) are predominantly located at distorted Ce substitution sites on CeO₂ terrace with a Pt-O coordination number of ca. 4. Pt/CeO

SUBMITTER: Tan W 

PROVIDER: S-EPMC9674627 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature