شماره ركورد كنفرانس :
4518
عنوان مقاله :
Sol-gel synthesis of nanoamorphous SiO2 in non-aqueous system of tetraethylorthosilicate
Author/Authors :
F.S. Shariatmadar Chemical engineering Research Group, Department of Engineering, University of Kashan, Kashan, Iran , M. Mohsen-nia Chemical engineering Research Group, Department of Engineering, University of Kashan, Kashan, Iran
كليدواژه :
sol-gel synthesis , silica nanoparticles , amorphous structure
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
In this work, Sol-gel synthesis of nanoamorphous silica (SiO2) is investigated. SiO2 nanoparticles
were synthesized from tetraethylorthosilicate (TEOS) as the precursor and ethanol as the solvent
under alkali medium and calcined at 550 0C. Their structure was characterized by X-ray
diffraction (XRD) and Scanning electron microscopy (SEM). The crystallite size was calculated
using the Scherrer equation.
The X-ray diffraction had a wide peak and showed amorphous structure for the particles. Scanning
electron microscopy images Illustrated that the product had the average particle size below 15 nm.
The results of XRD and SEM images had a good Compatibility with the scherrer equation results.
