Direct observation of the evolving metal-support interaction of individual cobalt nanoparticles at the titania and silica interface.

ABSTRACT: Understanding the metal-support interaction (MSI) is crucial to comprehend how the catalyst support affects performance and whether this interaction can be exploited in order to design new catalysts with enhanced properties. Spatially resolved soft X-ray absorption spectroscopy (XAS) in combination with Atomic Force Microscopy (AFM) and Scanning Helium Ion-Milling Microscopy (SHIM) has been applied to visualise and characterise the behaviour of individual cobalt nanoparticles (CoNPs) supported on two-dimensional substrates (SiO _x Si(100) (x < 2) and rutile TiO₂(110)) after undergoing reduction-oxidation-reduction (ROR). The behaviour of the Co species is observed to be strongly dependent on the type of support. For SiO _x Si a weaker MSI

SUBMITTER: Qiu C 

PROVIDER: S-EPMC8163327 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature