Controllable Preparation of Multi-Morphology Nanosized Silica by Hydrolysis of Mixed Chlorosilanes in Mixed Solvent of Alcohol and Water
The nanosized silica with different morphologies such as sphere, granule, needle, short rod, hollow tubule, has been in turn synthesized by using cetyltrimethylammonium bromide (CTAB) as template and mixed chlorosilane (silicon tetrachloride and trichlorosilane) as silicon source in aliphatic alcohol aqueous solution. The as-prepared products were characterized by x-ray diffraction (XRD), transmission electron microscope (TEM), and Fourier transform infrared spectroscopy (FT-IR), and BET nitrogen adsorption technique was employed for determination of specific surface area of the powdery silica. The formation conditions and mechanism of the nanosized silica with special and diverse shapes are preliminarily discussed.
Zhengyi Jiang, Jingtao Han and Xianghua Liu
J. Zhang et al., "Controllable Preparation of Multi-Morphology Nanosized Silica by Hydrolysis of Mixed Chlorosilanes in Mixed Solvent of Alcohol and Water", Advanced Materials Research, Vols. 152-153, pp. 1267-1271, 2011