Talks and Poster Presentations (with Proceedings-Entry):
M. Raza, G. Kickelbick:
"Titania and Silica Nanoparticles linked through novel phosphate-silane coupling agents and core-shell structures";
Poster: Junior Scientist Conference 2010,
Vienna;
2010-04-07
- 2010-04-09; in: "Proceedings",
(2010),
ISBN: 978-3-200-01797-9;
267
- 268.
English abstract:
In recent years, much work has been focused on titania nanoparticles particularly because of their photocatalytic properties. In this study we show how titania nanoparticles can be functionalized with Stoeber silica nanoparticles through phosphate-silane coupling agents having different spacers in between. We have synthesized two coupling agents; OP(OMe)2-CH2-CH2-CH2-Si(OMe)3 i.e., (CA1), and OP(OMe)2-CH2-Ph-Si(OMe)3 i.e., (CA2). Titania and silica nanoparticles were linked to the coupling agents in two steps. FT-IR and NMR results showed that titania is exclusively attached to phosphate group and the silica nanoparticles are attached to silicon function. Titania-silica core-shell nanoparticles were synthesized by using tetraethoxy silane and diethoxldimethyl silane as precursors for silica HR-TEM and line scan EDX confirm the presence of silica shell of 5nm around titania.
Related Projects:
Project Head Guido Kickelbick:
Chemisch massgeschneiderte Grenzflächen in Nanokompositen
Created from the Publication Database of the Vienna University of Technology.