Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

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Research Article, J Nucl Ene Sci Power Generat Technol Vol: 5 Issue: 2

Influence of Surfactants on the Physical Properties of Silica Nanoparticles Synthesis via Sol-Gel Method

Shehata MM1,2, Mahmoud HH2* and Waly SA3
1Accelerators and Ion Sources Department, Nuclear Research Center - Atomic Energy Authority, Cairo, Egypt
2Central Laboratory for Elemental and Isotopic Analysis, Nuclear Research Center - Atomic Energy Authority, Cairo, Egypt
3Second Research Reactor, Nuclear Research Center - Atomic Energy Authority, Cairo, Egypt
Corresponding author : HH Mahmoud
Central Laboratory for Elemental and Isotopic Analysis, Nuclear Research Center - Atomic Energy Authority, PO13759, Cairo, Egypt
E-mail: [email protected]
Received: November 09, 2015 Accepted: February 15, 2016 Published: February 19, 2016
Citation: Shehata MM, Mahmoud HH, Waly SA (2016) Influence of Surfactants on the Physical Properties of Silica Nanoparticles Synthesis via Sol-Gel Method. J Nucl Ene Sci Power Generat Technol 5:1. doi:10.4172/2325-9809.1000148

Abstract

Silica nanoparticles (n-SiO2) have been synthesized using hydrolysis of Tetraethyl orthosilicate (TEOS) as starting material and ethanol as solvent by sol-gel method. The effect of different surfactants such as non-ionic surfactants sorbitan tristearate (Span 65) and sorbitan trioleate (Span 85) and anionic surfactants Sodium dodecyl sulfate (SDS) and emulsifier T-80 (Tween-80) on morphology and size of the particles was investigated. The role of these surfactants in controlling the size and properties of silica nanoparticles has been discussed. The particles size of silica nanoparticles is controlled also using Ammonia as base catalyst. Silica nanoparticles with average particles size 18 nm have been synthesized with span 65. Various analytical methods, i.e., scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV- visible absorption spectroscopy and X-ray diffraction (XRD) were used to comprehensively characterize the obtained silica nanoparticles. The synthesized Si NPs has been used for adsorption of uranium from aqueous waste solution and the best conditions were achieved at pH 4.0. The adsorption isotherms were described by means of Langmuir and Freundlich isotherm models. The maximum sorption capacity of the prepared Si NPs and experimental results showed this to be 20.6 mg.g-1.

Keywords: Silica nanoparticles; Sol-gel method; Uranium adsorption

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