Biomedical Engineering Reference
In-Depth Information
Figure 2.9
The results of the thermal desorption of hydrogen from
carbon materials [26]. (a) TPD spectrum (peak A) of the initial
hydrogen-saturated single-wall nanotube sample (I) and
hydrogen-saturated activated carbon (2) (10 × magnification);
TPD spectra (peaks A and B) of a single-wall nanotube sample
annealed (prior to hydrogen saturation) in a vacuum at
970 K [3]. (b) TPD spectra (peaks B) saturated with
hydrogen for 10 min at 273 K and 3 min at pressures ranging
from 3.3 to 40 kPa, which corresponds to surface fillings (
θ
)
∼
ranging from 0.3 to
1. (c) The dependence (in Kissinger
coordinates) of TPD peak maximum B on the heating rate of
single-wall nanotubes.
