TY - JOUR
T1 - Interaction of hydrogen isotopes with carbon nanostructures
AU - Haluska, M.
AU - Hirscher, M.
AU - Becher, M.
AU - Dettlaff-Weglikowska, U.
AU - Chen, X.
AU - Roth, S.
PY - 2004
Y1 - 2004
N2 - The atomic nature of hydrogen storage in single wall carbon nanotubes (SWNTs) has been investigated by thermal desorption spectroscopy utilizing mass spectrometry. The partial pressures of desorbed H2, D2, and HD have been simultaneously recorded after sample loading with a 1:1 mixture of H2 and D2 gases. The amount of desorbed HD molecules approaches the ratio 2:1:1 for HD:H2:D2 in the case of atomic storage, i.e. chemisorption. In the case of storage as molecules, i.e. physisorption, the concentration of HD approaches the background level. Hydrogen isotopes are absorbed as atoms in SWNT samples containing transition metals from either sample production (Ni, Fe, …) and/or activation (opening) process (Ni, Fe, Ti, …). Purified SWNTs adsorb hydrogen molecules at low temperatures.
AB - The atomic nature of hydrogen storage in single wall carbon nanotubes (SWNTs) has been investigated by thermal desorption spectroscopy utilizing mass spectrometry. The partial pressures of desorbed H2, D2, and HD have been simultaneously recorded after sample loading with a 1:1 mixture of H2 and D2 gases. The amount of desorbed HD molecules approaches the ratio 2:1:1 for HD:H2:D2 in the case of atomic storage, i.e. chemisorption. In the case of storage as molecules, i.e. physisorption, the concentration of HD approaches the background level. Hydrogen isotopes are absorbed as atoms in SWNT samples containing transition metals from either sample production (Ni, Fe, …) and/or activation (opening) process (Ni, Fe, Ti, …). Purified SWNTs adsorb hydrogen molecules at low temperatures.
U2 - 10.1016/j.mseb.2003.10.092
DO - 10.1016/j.mseb.2003.10.092
M3 - Article
SN - 0921-5107
VL - 108
SP - 130
EP - 133
JO - Materials Science and Engineering B
JF - Materials Science and Engineering B
IS - 1-2
ER -