Investigation of Hexagonal Mesoporous Silica-Supported Composites for Trace Moisture Adsorption

Table 1 Textural characteristics of DHMS before and after PEI loading

Samples	SSAs^a (m²/g)	Vtotal^b (cm³/g)	Pore size^c (nm)
HMS-C [18]	952	0.82	–
DHMS	54.15	0.27	20.29
20PEI/DHMS	75.28	0.32	17.25
40PEI/DHMS	13.48	0.14	15.93
50PEI/DHMS	4.44	0.02	14.43

^aSpecific surface areas were calculated using the Brunauer-Emmett-Teller (BET) method based on the isotherm linear plot (P/P ₀ = 0.06~0.20)
^bVtotal was determined by the single point liquid nitrogen adsorption capacity at a relative pressure of 0.99
^cPore size means the adsorption average pore width