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Título: | Confident methods for the evaluation of the hydrogen content in nanoporous carbon microfibers |
Autor: | Culebras, Mario; Madroñero de la Cal, Antonio CSIC; Cantarero, Andrés; Amo, José M. CSIC; Domingo, Concepción CSIC ORCID; López, A. | Fecha de publicación: | 24-oct-2012 | Editor: | BioMed Central | Citación: | Nanoscale Research Letters. 7(1):588- (2012) | Resumen: | Abstract Nanoporous carbon microfibers were grown by chemical vapor deposition in the vapor-liquid solid mode using different fluid hydrocarbons as precursors in different proportions. The as-grown samples were further treated in argon and hydrogen atmospheres at different pressure conditions and annealed at several temperatures in order to deduce the best conditions for the incorporation and re-incorporation of hydrogen into the microfibers through the nanopores. Since there are some discrepancies in the results on the hydrogen content obtained under vacuum conditions, in this work, we have measured the hydrogen content in the microfibers using several analytical methods in ambient conditions: surface tension, mass density, and Raman measurements. A discussion on the validity of the results obtained through the correlation between them is the purpose of the present work. | URI: | http://hdl.handle.net/10261/66000 | Identificadores: | http://dx.doi.org/10.1186/1556-276X-7-588 |
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