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Vol. 25 No. 10 (2013): Vol 25 Issue 10

Copyright (c) 2013 AJC

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Effect of Sr-Ti Molar Ratio on Strontium Titanate Prepared by Sol-Gel Method

https://doi.org/10.14233/ajchem.2013.14170
Wenjie Zhang
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China
Feifei Bi
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China
Xin Sun
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China
Hongbo He
Institute of Applied Ecology, The Chinese Academy of Sciences, Shenyang 110016, P.R. China

Corresponding Author(s) : Wenjie Zhang

metalzhang@yahoo.com.cn

Asian Journal of Chemistry, Vol. 25 No. 10 (2013): Vol 25 Issue 10

Abstract

Tetrabutyl titanate and strontium nitrate were used as initial materials in a sol-gel process to prepare strontium titanate. The effects of strontium-titanium molar ratio on phase composition, structure and photocatalytic activity of the prepared materials were studied. The produced material was mainly composed of SrTiO3 and TiO2 when n(Sr)/n(Ti) ratio was less than 1:1, while the materials containing mainly Sr2TiO4 were prepared at n(Sr)/n(Ti) higher than 1:1. The particles of all the samples presented irregular shape with rough surface, along with partly particles aggregation. Phase composition of the produced materials showed strong dependence on n(Sr)/n(Ti) ratio. The sample prepared with n(Sr)/n(Ti) of 1:1 possessed the optimal photocatalytic activity of 32.5 % after 0.5 h of irradiation.

Keywords

Strontium titanate Photocatalytic Methyl orange
Zhang, W., Bi, F., Sun, X., & He, H. (2013). Effect of Sr-Ti Molar Ratio on Strontium Titanate Prepared by Sol-Gel Method. Asian Journal of Chemistry, 25(10), 5311–5314. https://doi.org/10.14233/ajchem.2013.14170
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