Premium
Novel catalytic functions induced by charge accumulation at subnano interface between unisize metal cluster disk and semiconductor surface
Author(s) -
Yasumatsu Hisato,
Fukui Nobuyuki
Publication year - 2014
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5646
Subject(s) - cluster (spacecraft) , semiconductor , monatomic ion , chemistry , quantum tunnelling , scanning tunneling microscope , catalysis , spectroscopy , desorption , chemical physics , metal , schottky barrier , depletion region , materials science , nanotechnology , optoelectronics , physics , adsorption , diode , biochemistry , organic chemistry , quantum mechanics , computer science , programming language
We have successfully accumulated electrons in a subnano‐space according to the Schottky barrier junction between a subnano metal cluster and a semiconductor surface. The scanning–tunneling microscopy/spectroscopy measurements depicted spatial distributions of the accumulated charges. Taking advantages of their large charge‐transfer efficiency to molecules, novel catalytic functions driven by the subnano‐space charges were studied by means of ultrahigh‐sensitive temperature‐programmed desorption mass spectroscopy. As a representative function, we have found high‐performance catalytic activity of Pt 30 monatomic‐layered disks constructed on the Si(111) surface in CO oxidation. Copyright © 2014 John Wiley & Sons, Ltd.