High Performance Ag/AgBr/TiO2 Photocatalyst-Coated Silica Beads

Jate Panichpakdee; Nobuaki Negishi; Siriporn Larpkiattaworn

doi:10.4028/www.scientific.net/KEM.690.156

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 690High Performance Ag/AgBr/TiO2 Photocatalyst-Coated...

High Performance Ag/AgBr/TiO₂ Photocatalyst-Coated Silica Beads

Abstract:

A series of three-component photocatalyst consisting of Ag, AgBr, and TiO₂ were synthesized and successfully coated on PSB-01 beads (TiO₂-coated silica beads). Different Ag to Ti molar ratios of 0.07, 0.10, and 0.20 in ethanol were prepared and coated on PSB-01 beads by sol-gel method. The morphologies and elemental compositions of these photocatalysts were characterized by SEM, EDS, and XRD, respectively. The performance of the photocatalyst coated on PSB-01 beads was evaluated in aspects of efficiency and stability. As for the photocatalytic efficiency, formic acid was used as the chemical model in this study. Results showed that the deposition of Ag/AgBr/TiO₂ at Ag/Ti molar ratio of 0.07 on PSB-01 beads had the best performance in terms of formic acid degradation when compared to other ratios of Ag/AgBr/TiO₂-coated PSB-01, Ag-coated PSB-01, and PSB-01 beads. In addition, for the study of stability, the release of silver from a series of Ag/AgBr/TiO₂-coated PSB-01 was also evaluated.

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Key Engineering Materials (Volume 690)

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156-161

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https://doi.org/10.4028/www.scientific.net/KEM.690.156

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Online since:

May 2016

Authors:

Jate Panichpakdee*, Nobuaki Negishi, Siriporn Larpkiattaworn

Keywords:

Ag/AgBr/TiO₂, Photocatalyst, Photocatalyst-Coated Silica Beads

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