Surface coverage control for dramatic enhancement of thermal CO oxidation by precise potential tuning of metal supported catalysts.

ABSTRACT: Chemical heterogeneous catalysis maximizes performance by controlling the interactions between the catalyst and the substrates. Steady-state catalytic rates depend on the heat of adsorption and the resultant coverage of adsorbates, which in turn reflects the electronic structure of the heterogeneous catalyst surfaces. This study aims to free the surface from high coverage of a kind of substance by externally controlling the electrochemical potential of the catalysts for improved thermal-catalytic rates. We employed aqueous CO oxidation at 295 K as a model reaction, where strong binding of chemisorbed CO (CO*) to the metal surfaces and its high coverage led to inhibition of O₂ accessing the surface site. Based on the establishment of coverage-potential-performance correlation, ou

SUBMITTER: Qi X 

PROVIDER: S-EPMC9400665 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature