Table of Contents
International Journal of Photochemistry
Volume 2014 (2014), Article ID 721216, 8 pages
http://dx.doi.org/10.1155/2014/721216
Research Article

Effect of the Amount of Water in the Synthesis of B-TiO2: Orange II Photodegradation

Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo 180, Colonia Reynosa Tamaulipas, 02200 México, DF, Mexico

Received 28 May 2014; Revised 10 August 2014; Accepted 11 August 2014; Published 28 August 2014

Academic Editor: Shinya Maenosono

Copyright © 2014 M. May-Lozano et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of boron-doped TiO2 photocatalysts (2% B-TiO2) with different water/alkoxide molar ratio were synthesized by conventional sol-gel method. The prepared samples were characterized by BET measurement, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIRS), and diffuse-reflectance UV-vis. The phase anatase was present, but unexpectedly a small amount of rutile phase was formed with low and excess water in the synthesis. Additionally it has been observed that the increase in the molar ratio of water significantly increases the values of band gap energy and the specific surface area. Results showed that degradation of Orange II azo dye increases with surface area, particle size, boron, and water content in photocatalysis. The boron species were introduced in the tricoordinated form.