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Titanium Dioxide Supported in Mesoporous Material (SBA-15) to Remove the Textile Dye Reactive Blue 69 in Aqueous Solution
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J. M. Barrera-A.
,
J. A. García-M.
Published/Copyright:
November 30, 2016
Abstract
In this paper, TiO2 supported on SiO2 (SBA-15) materials were developed. TiO2 content in photocatalysts was studied at different concentrations (0, 10, 20, and 40% mass). Sol-gel technique was employed for supporting TiO2 on mesoporous materials (SBA-15) in the laboratory. The synthesized photocatalysts were characterized by FTIR spectroscopy, X-ray diffraction, and BET area. The decoloration of textile dye Reactive Blue 69 in aqueous solutions (30 mg/L) was carried out using TiO2/SiO2 (SBA-15) photocatalysts (0, 10, 20, and 40 %mass), in presence of H2O2 (2 mL/L, 30% mass aqueous solution), and under UV-A irradiation conditions, at an initial pH of 3.0 (by addition of HNO3 1N). According to the results, 99% of color removal was achieved with all the photocatalysts tested. When the amount of titanium dioxide increases, the time required for decoloration is reduced. With the 40% mass photocatalyst the lowest time of decoloration of the system was obtained (180 min). The decoloration process followed a zero-order apparent kinetics.
Received: 2013-9-23
Revised: 2013-12-31
Accepted: 2014-1-11
Published Online: 2016-11-30
Published in Print: 2014-1-1
© 2016 by Walter de Gruyter Berlin/Boston
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- Electrolytic Treatment of Trace Natural and Synthetic Estrogens
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- Titanium Dioxide Supported in Mesoporous Material (SBA-15) to Remove the Textile Dye Reactive Blue 69 in Aqueous Solution
