Table 1.

Particle size and yield of OMS synthesized with different concentrations of CTAB

CTAB Concentration (%, w/w)	0.5	0.8	1.0	1.5	3.0
Particle shape	Near spheres	Rod-like	Rod-like	Rod-like	Cured rod-like
Mean particle size (nm)	D: 280	D: 300	D: 260	D: 280	D: 200
		L : 400	L: 510	L: 850	L: 1000
Yield (%)	42.3	89.4	90.5	91.3	90.2

Abbreviations: D, diameter; L, length; CTAB, cetyltrimethyl ammonium bromide; OMS, ordered mesoporous silica.