Output ID:  1000011403988
Category:  期刊论文
Journal Article Title:  :  Pinning platinum and Pt-oxide nanoparticles on graphite
Abstract:  Nanoparticles of platinum oxide are deposited onto a highly oriented pyrolitic graphite (HOPG) substrate. The platinum oxide particles are formed by flowing oxygen gas through a hot (1425 K) platinum capillary tube in vacuum. By controlling the temperature and the gas flow, a condition can be reached so that Pt atoms are evaporated from the inner walls of the tube and subsequently oxidised by oxygen either before or after landing on HOPG. Atomic oxygen, produced inside the tube through thermal cracking of O2, is co-deposited onto HOPG. Atomic oxygen form strong bonds with carbon atoms on the HOPG surface and hence a significant number of pinning sites are created for the incoming platinum and platinum oxide...
Keywords:  Pt clusters; Platinum; Graphite; Oxidation; Catalysis; Scanning tunnelling microscopy (STM); Surface defects; Adsorption 
Authors:  Jianzhi Gao; *Quanmin Guo
Journal Name:  Applied Surface Science 
Status:  Published
Publication Date/Period:  2012-5-1 
Issue No.:  14 
Volume No.:  258 
Pages:  5412-5417 
Indexed by:  other
DOI:  10.1016/j.apsusc.2012.02.026
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Last update date:  2016/03/02 12:19:40 
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