Hot carrier-selective chemical reactions on Ag(110)

Here, we show that the pathways, products, and efficiencies of reactions occurring on a metal surface can be spatially modulated by varying the type and energy of hot carriers produced by injecting tunneling electrons or holes from a scanning tunneling microscope tip into the metal surface. Control...

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Published inThe Journal of chemical physics Vol. 139; no. 7; p. 074707
Main Authors Hahn, Jae Ryang, Jang, Sang Hoon, Kim, Ki Wan, Son, Seung Bae
Format Journal Article
LanguageEnglish
Published United States 21.08.2013
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Summary:Here, we show that the pathways, products, and efficiencies of reactions occurring on a metal surface can be spatially modulated by varying the type and energy of hot carriers produced by injecting tunneling electrons or holes from a scanning tunneling microscope tip into the metal surface. Control over the metal surface reactions was demonstrated for the large-scale dissociation reaction of O2 molecules on a Ag(110) surface. Hot electrons (or holes) transported through the metal surface to chemisorbed O2 selectively dissociated the molecule into two oxygen atoms separated along the [110] (or [001]) lattice direction. The reaction selectivity was enhanced compared to the selectivity of a direct reaction involving tunneling carriers.
ISSN:1089-7690
DOI:10.1063/1.4817947