Journal
TOPICS IN CATALYSIS
Volume 39, Issue 3-4, Pages 145-149Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-006-0050-5
Keywords
platinum; supported clusters; size-selection; sintering; thermal stability; aggregation; support effect; atomic layer deposition; ALD film; GISAXS; hydrogen
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This paper is an initial study of the reactivity and thermal stability of atomic platinum clusters supported on Al2O3/SiO2/Si(100) as a function of the thickness of the alumina film and presence of hydrogen. Extremely high thermal stability of Pt7-10 clusters in vacua as well as in the presence of hydrogen is observed on SiO2/Si(100) coated with six cycles of Al2O3 film prepared by an atomic layer deposition technique.
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