Abstract
The effect of CO on the morphology of Pt nanoparticles of different sizes (1–4 nm) supported on TiO 2(1 1 0)-(1 × n) surface was investigated by scanning tunnelling microscopy (STM). The CO pressure was varied in the range of 10 −3–10 1 mbar. It was found that CO adsorption induces a significant increase in the initial size of the Pt nanoparticles of 1–2 nm even at room temperature. The agglomeration, however, is characteristically preceded by disruption of the smaller Pt nanoclusters at lower CO pressures. This finding was explained by CO-assisted Ostwald ripening, in which the mass transport proceeds via surface carbonyl intermediates.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
