Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Sun, Nov 10, 2024
[Archive]
Volume 8, Issue 4 (december 2011)
IJMSE 2011, 8(4): 20-26 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
S. Janitabar Darzi, A. R. Mahjoub, A. R. Nilchi, S. Rasouli Garmarodi. HEATTREATMENTEFFECTS ON NON-THERMALSOL-GELDRIVED MESOPOROUS TiO2/SiO2. IJMSE 2011; 8 (4) :20-26
URL: http://ijmse.iust.ac.ir/article-1-386-en.html
URL: http://ijmse.iust.ac.ir/article-1-386-en.html
Abstract: (35382 Views)
TiO2/SiO2 nanocomposite with molar ratio 1:1 was synthesized by a free calcination sol-gel method using titanium tetra chloride and tetraethylorthosilicate as raw materials. In the composite, TiO2 nanocrystals are highly dispersed in the amorphous SiO2 matrix and the mater showed size quantization effect arising from the presence of extremely small titanium oxide species having a low coordination number. Thermal phase transformation studies of the as-prepared composite were carried out by means of X-ray diffraction (XRD) patterns and thermogravimetry–differential scanning calorimetry (TG–DSC) analyses. The studies showed existence of anatase phase in all the tested temperatures. When temperature exceeds 400°C, brookite phase was formed beside anatase phase. At 950°C amorphous silica matrix was transformed to crystobalite and brookite phase disappeared. Finally, small peaks of rutile phase were detectable at 1100°C.
Type of Study: Research Paper |
Subject:
materials engineeing and special subjects
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
