Rh single atoms on TiO₂ dynamically respond to reaction conditions by adapting their site.

ABSTRACT: Single-atom catalysts are widely investigated heterogeneous catalysts; however, the identification of the local environment of single atoms under experimental conditions, as well as operando characterization of their structural changes during catalytic reactions are still challenging. Here, the preferred local coordination of Rh single atoms is investigated on TiO₂ during calcination in O₂, reduction in H₂, CO adsorption, and reverse water gas shift (RWGS) reaction conditions. Theoretical and experimental studies clearly demonstrate that Rh single atoms adapt their local coordination and reactivity in response to various redox conditions. Single-atom catalysts hence do not have static local coordinations, but can switch from inactive to active structure und

SUBMITTER: Tang Y 

PROVIDER: S-EPMC6776542 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature