Near-Stoichiometric Adsorption of Phosphate by Silica Gel Supported Nanosized Hematite

Table 1

Porosity data for initial and modified silica gels.

Sample	𝑆sp.^1; m^2/g	𝑉total^1,; cm^3/g	𝑉meso^2,; cm^3/g	𝑉micro^1,2,; cm^3/g	Micropore; fraction,; 𝑉micro/𝑉total,; %	𝑟mean^1,; nm	𝑟BJH^2,; nm
Initial	480	0.403	0.380	0.023	5.7	1.68	1.77
A	484	0.393	0.368	0.025	6.36	1.62	1.66
B	536	0.420	0.229	0.190	45.5	1.57	1.72

1By BET.
²By BJH.