Synthesis and Surface Properties of Silica Spheres with Core Shell Structure by One Convenient Method

Table 1

Effect of molar ratio of methanol to CTAB on d₁₀₀, surface area, pore volume, and mean pore size of mesoporous silica.

Methanol : CTAB	d100 ^a(nm)	a (nm)	Pore size with BJH diameter^b	Specific surface area^c	Total pore volume
			(nm)	(m^2/g)	(cm^3/g)
7∶1	3.89	4.5	2.178	589	0.98
8∶1	3.96	4.57	2.194	904	1.027
8.5∶1	3.99	4.61	2.486	1044	1.41
9∶1	4.05	4.68	2.422	699	1.33
10∶1	3.91	4.51	2.33	696	1.32

^aCalculated from SXRD.
^bCalculated from the desorption portion of N₂ adsorption-desorption isotherm.
^cBET-method.