Ag-TiO2 Color Removal from Synthetic Wastewater by Photocatalalytic Process with Ag-TiO2 Catalyst

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Thammasak Rojviroon
Sanya Sirivithayapakorn
Orawan Rojviroon
Kotchakorn Suranowarath


 This research aims to improve the potential of TiO2 photocatalyst by doping with 3 different amounts of Ag, i.e. 0.1%, 0.5% and 1.0% weight to volume. The color removal efficiency of all prepared photocatalysts were evaluated with IC and RB5 in synthetic wastewater by photocatalytic process under UVA light sources of 1,000 µW/cm2. As a result of the Ag doped into the TiO2 photocatalyst, the doped photocatalyst was more suitable and potent for photocatalytic process. The optimum removal efficiency of IC and RB5 in synthetic wastewater was 92.00% and 69.00%, respectively for 1.0%Ag-TiO2 photocatalyst at 90 minutes. For the kinetics analysis of photocatalytic process, the mechanism of color removal in photocatalytic reaction could be described by the Langmuir Hinshelwood model.

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Rojviroon, T. ., Sirivithayapakorn, S. ., Rojviroon, O. ., & Suranowarath, K. . (2018). Ag-TiO2 Color Removal from Synthetic Wastewater by Photocatalalytic Process with Ag-TiO2 Catalyst. Journal of Engineering, RMUTT, 16(2), 47–57. Retrieved from
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