Titanium dioxide/adsorbent hybrid photocatalysts for photodestruction of organic substances of dilute concentrations

Utilities of hybrid photocatalyst consisting of TiO 2 and an adsorbent such as activated carbon in photoinduced mineralization of organic substances of very dilute present concentrations are demonstrated for the photodecomposition of propionaldehyde in air atmosphere, and propyzamide and bromoform d...

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Bibliographic Details
Published inCatalysis today Vol. 58; no. 2; pp. 133 - 140
Main Authors Yoneyama, Hiroshi, Torimoto, Tsukasa
Format Journal Article
LanguageEnglish
Published Elsevier B.V 12.05.2000
Subjects
Absorbents
Environmental remediation
Hybrid phtotocatalysts
Photodecomposition
Environmental remediation
Hybrid phtotocatalysts
Absorbents
Photodecomposition
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Summary:Utilities of hybrid photocatalyst consisting of TiO 2 and an adsorbent such as activated carbon in photoinduced mineralization of organic substances of very dilute present concentrations are demonstrated for the photodecomposition of propionaldehyde in air atmosphere, and propyzamide and bromoform dissolved in water. The substrates of target were adsorbed on the adsorbent support, and then a high concentration environments of the substrate was formed around the loaded TiO 2, resulting in an increase in the photodestruction rate. Evidences for the diffusion of propionaldeyde adsorbed on the mordenite support to the loaded TiO 2 are presented. Merits of the use of the adsorbents as the support for TiO 2 loading is discussed.
ISSN:0920-5861
1873-4308
DOI:10.1016/S0920-5861(00)00248-0