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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Hydrogen adsorption on nitrogen-doped carbon xerogels

Cited 49 times inthomson ciCited 57 times inthomson ci
Title
Hydrogen adsorption on nitrogen-doped carbon xerogels
Other Titles
HYDROGEN ADSORPTION ON NITROGEN-DOPED CARBON XEROGELS
Author
Kang, Kyung YeonLee, Burtrand I.Lee, Jae Sung
Keywords
HIGH-SURFACE-AREA; STORAGE MATERIALS; POROUS MATERIALS; NANOTUBES; AEROGELS; NANOSTRUCTURES; CAPACITY; NITRIDE; XPS
Issue Date
2009-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.47, no.4, pp.1171 - 1180
Abstract
Nitrogen-doped (1.2-4.5 wt%) carbon xerogels were synthesized from carbonization of resorcinol-formaldehyde polymer in an ammonia atmosphere at various temperatures. The textural properties and the chemical nature of nitrogen in the nitrogen-doped carbon xerogels were analyzed by Ar adsorption/desorption isotherms and X-ray photoelectron spectroscopy, respectively. The maximum hydrogen uptakes were measured to be 3.2 wt% at -196 degrees C and 0.28 wt% at 35 degrees C. Hydrogen adsorption had a stronger correlation with specific surface area than nitrogen content at the low temperature of -196 degrees C. At the higher temperature of 35 degrees C, optimal nitrogen doping enhanced hydrogen adsorption by electronic modification of carbon in agreement with previous theoretical predictions. (C) 2009 Elsevier Ltd. All rights reserved
URI
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DOI
10.1016/j.carbon.2009.01.001
ISSN
0008-6223
Appears in Collections:
ECHE_Journal Papers
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