Nanocatalysis by the Tip of a Scanning Tunneling Microscope Operating Inside a Reactor Cell
- 2 September 1994
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 265 (5177) , 1415-1418
- https://doi.org/10.1126/science.265.5177.1415
Abstract
The platinum-rhodium tip of a scanning tunneling microscope that operates inside of an atmospheric-pressure chemical reactor cell has been used to locally rehydrogenate carbonaceous fragments deposited on the (111) surface of platinum. The carbon fragments were produced by partial dehydrogenation of propylene. The reactant gas environment inside the cell consisted of pure H2 or a 1:9 mixture of CH3CHCH2 and H2 at 300 kelvin. The platinum-rhodium tip acted as a catalyst after activation by short voltage pulses. In this active state, the clusters in the area scanned by the tip were reacted away with very high spatial resolution.Keywords
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