Comparative study on sol-gel treatment of TiO2 nanoparticles using different fluorosilane-based compounds

Pazokifard, Shahla., Farrokhpay, Saeed., Mirabedini, Mojtaba and Esfandeh, Masood (2013). Comparative study on sol-gel treatment of TiO2 nanoparticles using different fluorosilane-based compounds. In: Chemeca 2013 : Challenging Tomorrow. Chemeca 2013: Australasian Conference on Chemical Engineering, Brisbane, QLD, Australia, (1-6). 29 September-2 October 2013.

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Name Description MIMEType Size Downloads
Author Pazokifard, Shahla.
Farrokhpay, Saeed.
Mirabedini, Mojtaba
Esfandeh, Masood
Title of paper Comparative study on sol-gel treatment of TiO2 nanoparticles using different fluorosilane-based compounds
Formatted title
Comparative study on sol-gel treatment of TiO2 nanoparticles using different fluorosilane-based compounds
Conference name Chemeca 2013: Australasian Conference on Chemical Engineering
Conference location Brisbane, QLD, Australia
Conference dates 29 September-2 October 2013
Proceedings title Chemeca 2013 : Challenging Tomorrow
Place of Publication Hawthorn, VIC, Australia
Publisher Institution of Engineers, Australia
Publication Year 2013
Sub-type Fully published paper
ISBN 9781922107077
Start page 1
End page 6
Total pages 6
Collection year 2014
Language eng
Formatted Abstract/Summary
TiO2 nanoparticles were treated with three different fluoroalkylsilanes via sol-gel method in alkaline and acidic conditions. 1H, 1H, 2H, 2H-Perfluorooctyltriethoxysilane (F1), Trimethoxy (3, 3, 3-trifluoropropyl) silane (F2) and Triethoxy(4(trifluoromethyl)phenyl) silane (F3) were used as the fluoroalkylsilane-based compounds.

The treated nanoparticles were characterized using FTIR spectroscopy, thermal gravimetric analysis, X-ray photoelectron spectroscopy and transition electron spectroscopy. The mechanism of fluorosilane adsorption on the TiO2 nanoparticles surface was investigated in alkaline and acidic conditions.

The results showed that F1 adsorbs on the TiO2 nanoparticles surface only in alkaline condition. However, no significant adsorption was found for F2, neither in alkaline nor acidic conditions. In contrast, F3 was adsorbed in both alkaline and acidic conditions. This indicates that both the pH of the sol-gel media, as well as the chemical structure of the used fluoroalkylsilane can affect the surface treatment of TiO2 nanoparticles.
Keyword TIO2 nanoparticles
Sol-gel
Fluorosilane
Fluoroalkylsilane
Dispersion
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: Julius Kruttschnitt Mineral Research Centre Publications
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Created: Fri, 04 Oct 2013, 14:03:40 EST by Dr Saeed Farrokhpay on behalf of Julius Kruttschnitt Mineral Research Centre