title: Confident methods for the evaluation of the hydrogen content in nanoporous carbon microfibers.
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.
authors.affiliation: Materials Science Institute, University of Valencia, 46071 Valencia, PO Box 22085, Spain. mario.culebras@uv.es.
authors.forename: Mario
authors.initials: M
authors.lastname: Culebras
authors.forename: Antonio
authors.initials: A
authors.lastname: Madroñero
authors.forename: Andres
authors.initials: A
authors.lastname: Cantarero
authors.forename: José Maria
authors.initials: JM
authors.lastname: Amo
authors.forename: Concepción
authors.initials: C
authors.lastname: Domingo
authors.forename: Antonio
authors.initials: A
authors.lastname: López