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Effects of Silver on the Photocatalytic Degradation of Gaseous Isopropanol

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Abstract

The decomposition of gaseous isopropanol (IPA) by UV/TiO2 process in an annular photoreactor was studied under various conditions such as UV light intensity and inlet IPA concentrations. In order to impede the rapid electron/hole recombination during photoreaction, the Ag deposited on TiO2 photocatalysts were prepared by a photodeposition process. This study was aimed at applying the photocatalytic oxidation using the Ag/TiO2 and pure TiO2 catalysts to remove gaseous IPA. The PL analyses indicated that the silver on the surface of TiO2 could inhibit the electron/holes recombination. For experiments conducted with gaseous IPA under UV light irradiation, the photocatalytic activity of Ag deposited TiO2 surface was significantly superior to that of TiO2 only ones.

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Acknowledgements

This research was supported by Grant NSC-93-2211-E011-001 from the National Science Council, Taiwan, Republic of China

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Authors and Affiliations

  1. Department of Cosmetic Application & Management, St. Mary’s Medicine Nursing and Management College, 100, Lane 265, San-shing Road, Section 2, San-shing Shiang, Yi-lan, 266, Taiwan

    Chih-Ming Ma

  2. Department of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Section 4, Taipei, 106, Taiwan

    Young Ku & Yiang-Chen Chou

  3. Department of Materials Engineering, Tatung University, 40, Zhongshan North Road, Section 3, Taipei, 104, Taiwan

    Yu-Lin Kuo

  4. The Graduate Institute of Environmental Engineering, National Taiwan University, 71, Chou-Shan Road, Taipei, 106, Taiwan

    Fu-Tien Jeng

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  1. Chih-Ming Ma
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  2. Young Ku
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  3. Yu-Lin Kuo
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  4. Yiang-Chen Chou
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  5. Fu-Tien Jeng
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Correspondence to Young Ku.

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Ma, CM., Ku, Y., Kuo, YL. et al. Effects of Silver on the Photocatalytic Degradation of Gaseous Isopropanol. Water Air Soil Pollut 197, 313–321 (2009). https://doi.org/10.1007/s11270-008-9813-x

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  • DOI: https://doi.org/10.1007/s11270-008-9813-x

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