2.2. Apparatus
Mesoporous structures were characterised by means of N2
adsorption–desorption isotherm measurements at 77 K with a
BELSORP-mini (BEL Japan, Inc, Osaka, Japan). The TGA measurement
was performed on TA Q50 instrument (TA Instruments,
New castle, DE, USA) in the temperature range from ambient to
1000 C. The FT-IR spectra of materials were obtained using Bruker
EQINOX 50 (Bruker, USA).