Modification of Ceramic Membranes by Silica Nanoparticles with Thiourea Functions

Sol-gel approach based on hydrolytic copolycondensation of tetraethoxysilane (TEOS) with ethylthiocarbamidepropyl triethoxysilane (ETUS) was used to deposit functional layers with thiourea functions on the surface of macroporous ceramic alumina membrane supports. According to SEM images, such layers...

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Bibliographic Details
Published in:Journal of nanomaterials 2019-01, Vol.2019 (2019), p.1-8
Main Authors: Tomina, Veronika V., Melnyk, Inna V., Nazarchuk, Galyna I.
Format: Article
Language:English
Subjects:
Aluminum oxide
Aqueous solutions
Contact angle
Ethanol
Functional groups
Functionals
Hydrochloric acid
Infrared spectroscopy
Membrane separation
Metals
Nanomaterials
Nanoparticles
Physical chemistry
Pore size
Porous materials
Silicon dioxide
Silver
Sol-gel processes
Tetraethyl orthosilicate
Thioureas
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Summary:Sol-gel approach based on hydrolytic copolycondensation of tetraethoxysilane (TEOS) with ethylthiocarbamidepropyl triethoxysilane (ETUS) was used to deposit functional layers with thiourea functions on the surface of macroporous ceramic alumina membrane supports. According to SEM images, such layers are composed of nanoparticles of about 60-70 nm in diameter, while IR spectroscopy data confirmed the presence of functional groups introduced during the synthesis. Such functionalization technique allows combining sorption and membrane technology and could be successfully used to remove trace quantities of copper, cadmium, and silver metal ions from aqueous solutions.
ISSN:1687-4110
1687-4129
DOI:10.1155/2019/2534934