The introduction of some basic nitrogen-containing functional
groups can be realized by the exposure of AC to gaseous ammonia
(NH3) [22], urea (H2NCONH2) and melamine (C3H6N6) [23]. It is needed
to notice that the abovementioned activation methods are categorized
into chemical activation and they always incorporate complex procedures
compared with physical activation. In order to make a supplement
to the physical activation research, a thermal modified method
for AC was put forward in this work. The mechanism of thermal modificationwas
elucidated based on porous structure and surface chemistry
analyses. The kinetics, equilibrium and thermodynamics behaviors of
phenol adsorption on the modified AC sample were also investigated