Aminopropyltrimethoxysilane CO2 adsorption 1 CO2 concentration 1 Carbon dioxide 1 Carbon dioxide adsorption 1 Driers (materials) 1 Gas adsorption 1 Global warming 1 Impregnated silicas 1 Iodine 1 Molecules 1 Nanostructured materials 1 Porosity 1 Silica 1 Silica gel 1 Specific adsorption 1 Synthesis and characterizations 1 Water molecule 1