Hydrogen Oxidation-Driven Hot Electron Flow Detected by Catalytic Nanodiodes

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Hydrogen oxidation on platinum is shown to be a surface catalytic chemical reaction that generates a steady state flux of hot (>1 eV) conduction electrons. These hot electrons are detected as a steady-state chemicurrent across Pt/TiO{sub 2} Schottky diodes whose Pt surface is exposed to hydrogen and oxygen. Kinetic studies establish that the chemicurrent is proportional to turnover frequency for temperatures ranging from 298 to 373 K for P{sub H2} between 1 and 8 Torr and P{sub O2} at 760 Torr. Both chemicurrent and turnover frequency exhibit a first order dependence on P{sub H2}.

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Hervier, Antoine; Renzas, J. Russell; Park, Jeong Y. & Somorjai, Gabor A. July 20, 2009.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 22 times . More information about this article can be viewed below.

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Hydrogen oxidation on platinum is shown to be a surface catalytic chemical reaction that generates a steady state flux of hot (>1 eV) conduction electrons. These hot electrons are detected as a steady-state chemicurrent across Pt/TiO{sub 2} Schottky diodes whose Pt surface is exposed to hydrogen and oxygen. Kinetic studies establish that the chemicurrent is proportional to turnover frequency for temperatures ranging from 298 to 373 K for P{sub H2} between 1 and 8 Torr and P{sub O2} at 760 Torr. Both chemicurrent and turnover frequency exhibit a first order dependence on P{sub H2}.

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3930

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  • Journal Name: Nano Letters; Journal Volume: 9; Journal Issue: 11

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  • Report No.: LBNL-4528E
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1021/nl9023275 | External Link
  • Office of Scientific & Technical Information Report Number: 1012477
  • Archival Resource Key: ark:/67531/metadc843448

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Office of Scientific & Technical Information Technical Reports

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  • July 20, 2009

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • July 26, 2016, 5:43 p.m.

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Hervier, Antoine; Renzas, J. Russell; Park, Jeong Y. & Somorjai, Gabor A. Hydrogen Oxidation-Driven Hot Electron Flow Detected by Catalytic Nanodiodes, article, July 20, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc843448/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.