Surface Modification of TiO sub(2) by a Ruthenium(II) Polypyridyl Complex via Silyl-Linkage for the Sensitized Photocatalytic Degradation of Carbon Tetrachloride by Visible Irradiation

Surface Modification of TiO sub(2) by a Ruthenium(II) Polypyridyl Complex via Silyl-Linkage for the Sensitized Photocatalytic Degradation of Carbon Tetrachloride by Visible Irradiation

Silylated tris(3-pyridin-2-yl)pyrazole) ruthenium(II) was used as a photosensitizer to modify anatase titanium dioxide, which was then evaluated for the photodegradation of carbon tetrachloride via visible irradiation. Synthesis of the photosensitizer is described. Results indicated that the silyl a...

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Veröffentlicht in:Water research (Oxford) 2003-04, Vol.37 (8), p.1939-1947
Hauptverfasser: Fung, Annie KM, Chiu, Brenda KW, Lam, Michael HW
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carbon tetrachloride
titanium dioxide
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container_title Water research (Oxford)
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creator Fung, Annie KM
Chiu, Brenda KW
Lam, Michael HW
description Silylated tris(3-pyridin-2-yl)pyrazole) ruthenium(II) was used as a photosensitizer to modify anatase titanium dioxide, which was then evaluated for the photodegradation of carbon tetrachloride via visible irradiation. Synthesis of the photosensitizer is described. Results indicated that the silyl anchoring group was an ideal surface modification moiety for TiO sub(2) due to the high affinity of the silyl functionality for the hydroxyl groups on the surface of the semiconductor. Under both aerobic and anaerobic conditions, the photosensitized TiO sub(2) material mediated the photodegradation of CCl sub(4), with the degradation kinetics fitting the Langmuir Henshelwood type rate law.
doi_str_mv 10.1016/S0043-1354(02)00567-5
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subjects carbon tetrachloride
titanium dioxide
title Surface Modification of TiO sub(2) by a Ruthenium(II) Polypyridyl Complex via Silyl-Linkage for the Sensitized Photocatalytic Degradation of Carbon Tetrachloride by Visible Irradiation
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