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Preparation of nanoporous titania photocatalyst with high photocatalytic activity using metatitanic acid

QINGLIN YANG1,* , JINGNAN ZHANG1, QIN WANG1, LIN GUO1, LEI JIANG1

Affiliation

  1. School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Abstract

High photocatalytic activity nanoporous titanium oxide (TiO2) was prepared at low temperature by simple chemical method, using low-cost metatitanic acid and sodium hydroxide as raw materials. The XRD pattern shows that the phase composition of titania is anatase and the crystallite size is around 10 nm. From SEM, TEM images and BET analysis, the nanoporous TiO2 aggregates display mesoporous structure and the surface area of the sample is 231.28 m2 ∙g -1 . The FTIR spectrum of the porous TiO2 aggregates shows no other bands in the spectrum except Ti-O vibrating and the surface adsorbed water and the hydroxyl groups. The photocatalytic activity of the sample is about 4 times of P-25 by decomposing the methylene blue under UV light irradiation through photocatalytic test..

Keywords

Titanium Oxide, Photocatalyst, Photocatalytic Activity, Porous Materials, Metatitanic Acid.

Submitted at: April 4, 2011
Accepted at: June 9, 2011

Citation

QINGLIN YANG, JINGNAN ZHANG, QIN WANG, LIN GUO, LEI JIANG, Preparation of nanoporous titania photocatalyst with high photocatalytic activity using metatitanic acid, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 6, pp. 689-692 (2011)