Effects of Calcination Temperature on Properties of 0.3%La-3%In-TiO₂ Photocatalyst Prepared Using Sol-Gel Method

Title:Effects of Calcination Temperature on Properties of 0.3%La-3%In-TiO₂ Photocatalyst Prepared Using Sol-Gel Method

Volume: 11 Issue: 1

Author(s): Wenjie Zhang, Ling Du, Jinlei Chen and Hongbo He

Affiliation:

Keywords: Calcination, In, La, photocatalysis, TiO₂.

Abstract: A modified sol-gel method was applied to prepare 0.3%La-3%In-TiO₂ in order to investigate the effect of calcination temperature. The material was investigated by SEM, XRD, and N₂ adsorption-desorption methods. The diffraction peaks of the sample are in accordance to the patterns of anatase TiO₂. The anatase crystallite sizes are 5.5, 6.3, 11.1, and 15.6 nm for the samples calcinated at 350°C, 400°C, 500°C, and 600°C, respectively. Crystal cell expansion is found when calcination temperature increases from 350°C to 500°C. The increase of average pore size and decrease of pore volume with increasing calcination temperature are found for 0.3%La-3%In-TiO₂. The 0.3%La-3%In-TiO₂ calcinated at 400°C has satisfactory adsorption capacity and photocatalytic activity. 25.6% of the initial methyl orange can be adsorbed on the material after adsorption-desorption equilibrium. After that, the remaining methyl orange can be fully degraded after 40 min of irradiation.

Cite this article as:

Zhang Wenjie, Du Ling, Chen Jinlei and He Hongbo, Effects of Calcination Temperature on Properties of 0.3%La-3%In-TiO₂ Photocatalyst Prepared Using Sol-Gel Method, Current Nanoscience 2015; 11 (1) . https://dx.doi.org/10.2174/1573413710666140926225340