Characterization of adsorbents. Textural characterization
of the adsorbents was done by using N2 adsorptiondesorption
at 77 K in a Micromeritics ASAP 2010.
Thermogravimetric analysis (TGA) was performed with an
EXTAR 6000 Seiko thermal analyzer at a heating rate of
10◦C/min in helium (30 mL.min−1).