Paper Titles
Synthesis of Titania Nanoparticles via Spark Discharge Method Using Air as a Carrier
p.143
Synthesis, Preparation and Catalytic Activities of V-Doped TiO2 Gel Coating on Porous α-Al2O3 Beads
p.147
The Effect of Isothermal Heat Treatment on the Rolling Contact Fatigue of Carburized Low Carbon Microalloyed Steel
p.151
Mechanism of PVC’s Solid-Phase Photocatalytic Degradation Enhanced by Plasma
p.155
Titania Coating of Wasted Silica Particles and their Photocatalytic Property
p.159
Visible Light Response of ZrO2 by Nitriding and its Photocatalytic Activity
p.163
Visible-Light Activity of N-Doped TiO2 Powders and their Applications
p.167
XPS Investigation of Passive Layer on Copper-Bearing Antibacterial Ferrite Stainless Steel
p.171
Effect of Sn-Addition on the Bonding Strength between Casting Au-Pt-Cu Alloy and SiO2-Based Porcelain
p.175

Titania Coating of Wasted Silica Particles and their Photocatalytic Property

Article Preview

Abstract:

TiO2-coated SiO2 particles were prepared using industrially-wasted amorphous SiO2 powder by an alkoxide method, in which the mean particle size of SiO2 was approximately 100 nm. The SiO2 powder and titanium tetraisopropoxide were mixed in ethanol and an appropriate amount of distilled water was added to the suspension for hydrolysis of the alkoxide. The product was calcined in the temperature range from 600 to 1300°C to crystallize the deposited TiO2. The homogeneous deposition of TiO2 on the SiO2 surface was observed by SEM. It was found that the SiO2-support tended to retard the transformation from anatese to rutile. The maximum photocatalytic activity for decomposition of methyleneblue was obtained on the TiO2-coated SiO2 powder calcined at 1000°C, and was higher than that of a commercial TiO2 powder.

You might also be interested in these eBooks
Eco-Materials Processing and Design VIII View Preview

Info:

Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

159-162

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.159

Citation:

Cite this paper

Online since:

May 2007

Authors:

Shinji Karino, Hisao Abe, Junichi Hojo

Keywords:

Amorphous Silica, Coating, Photocatalytic, Titania, Wasted Silica Powder

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Y. Ohko, DA. Tryk, K. Hashimoto, and A. Fujishima, J. Phys. Chem. B, 102, 2699 (1998).

Google Scholar

[2] T. Minabe, DA. Tryk, P. Sawunyama, Y. Kikuchi, K. Hashimoto, and A. Fujishima, J. Photochem. Photobiol. A: Chem., 137, 53 (2000).

Google Scholar

[3] Ki Do Kim, Hyun Joo Bae, Hee Taik Kim Colloids and Surfaces A: Physicochem. Eng. Aspects 224 (2003) 119-126.

Google Scholar

[4] T. Ohno, D. Haga, K. Fujihara, K. Kaizaki, M. Matsumura:J. Phys. Chem. B, 101, 6415-6419 (1997); errata, 101, 10605 (1997).

DOI: 10.1021/jp971093i

Google Scholar

[5] T. Ohno, K. Tokieda, S. Higashida, M. Matsumura: Appl. Catal. A, 244, 383 (2003).

Google Scholar

[6] T. Kogure, T. Umezawa, Y. Kotani, A. Matsuda, M. Tatsumisago, T. Minami, Mater. Res. Soc. Proc., 580, 213-218 (2000).

Google Scholar

[7] T. Ishikawa, Materials Integration, Vol. 16, No. 11, 19-25 (2003).

Google Scholar

[8] X.H. Wang, J. -G. Li, H. Kamiyama, M. Katada, N. Ohashi, Y. Moriyoshi, and T. Ishigaki, J. AM. CHEM. SOC, Vol. 127, No. 31, 10982-10990 (2005) Fig. 6 Absorbance measurement result of methyleneblue in water.

DOI: 10.1021/ja051240n

Google Scholar