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Title: Interaction between adsorbed hydrogen and potassium on a carbon nanocone containing material as studied by photoemission

Hydrogen adsorption on a potassium doped carbon nanocone containing material was studied by photoelectron spectroscopy and work function measurement. The valence band spectra indicate that there is charge transfer from potassium to carbon. Upon deposition on carbon potassium is in its ionic state for lower doping and shows both ionic and metallic behavior at higher doping. Adsorption of hydrogen facilitates diffusion of potassium on the carbon material as seen by changes in the K{sub 2p} core level spectrum. Variations in the measured sample work function indicate that hydrogen initially adsorb on the K dopants and subsequently adsorb on the carbon cone containing material.
Authors:
 [1] ;  [2]
  1. Nesna University College, 8700 Nesna (Norway)
  2. Physics Department, Norwegian University of Science and Technology, 7491 Trondheim (Norway)
Publication Date:
OSTI Identifier:
22489476
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADSORPTION; CARBON; CONES; DEPOSITION; DIFFUSION; DOPED MATERIALS; HYDROGEN; NANOSTRUCTURES; PHOTOELECTRON SPECTROSCOPY; PHOTOEMISSION; POTASSIUM; SPECTRA; WORK FUNCTIONS