Modification and enhanced photocatalytic activity of TiO2 following exposure to non-linear irradiation sources

Soo Keun Lee; Peter K.j. Robertson; Andrew Mills; Daniel McStay

doi:10.1016/S1010-6030(98)00463-8

Modification and enhanced photocatalytic activity of TiO2 following exposure to non-linear irradiation sources

Soo Keun Lee^*, Peter K.j. Robertson, Andrew Mills, Daniel McStay

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article

28 Citations (Scopus)

Abstract

The effects of high power pulsed laser light on a TiO2 photocatalyst (powder and 0.1% (w/v) aqueous suspension) are reported. When this material was irradiated with a laser of power over 0.8 MW peak pulse power at 355 nm wavelength a visible change in colour from white to dark blue was observed. The initial rate of change of the total colour difference is related to the laser power; the stronger the laser power the darker the colour change. The result of X-ray diffraction studies indicates that the crystal structure of the TiO2 developed a more rutile form after laser exposure. Electron microscopic studies showed that spherical shaped particles of TiO2 were observed after laser treatment. Preliminary results show enhanced photocatalytic activity for the destruction of methylene blue. (C) 1999 Elsevier Science S.A. All rights reserved.

Original language	English
Pages (from-to)	69-71
Number of pages	3
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	122
Issue number	1
DOIs	https://doi.org/10.1016/S1010-6030(98)00463-8
Publication status	Published - 10 Mar 1999

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Lee, S. K., K.j. Robertson, P., Mills, A., & McStay, D. (1999). Modification and enhanced photocatalytic activity of TiO2 following exposure to non-linear irradiation sources. Journal of Photochemistry and Photobiology A: Chemistry, 122(1), 69-71. https://doi.org/10.1016/S1010-6030(98)00463-8

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abstract = "The effects of high power pulsed laser light on a TiO2 photocatalyst (powder and 0.1% (w/v) aqueous suspension) are reported. When this material was irradiated with a laser of power over 0.8 MW peak pulse power at 355 nm wavelength a visible change in colour from white to dark blue was observed. The initial rate of change of the total colour difference is related to the laser power; the stronger the laser power the darker the colour change. The result of X-ray diffraction studies indicates that the crystal structure of the TiO2 developed a more rutile form after laser exposure. Electron microscopic studies showed that spherical shaped particles of TiO2 were observed after laser treatment. Preliminary results show enhanced photocatalytic activity for the destruction of methylene blue. (C) 1999 Elsevier Science S.A. All rights reserved.",

author = "Lee, {Soo Keun} and {K.j. Robertson}, Peter and Andrew Mills and Daniel McStay",

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T1 - Modification and enhanced photocatalytic activity of TiO2 following exposure to non-linear irradiation sources

AU - Lee, Soo Keun

AU - K.j. Robertson, Peter

AU - Mills, Andrew

AU - McStay, Daniel

PY - 1999/3/10

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N2 - The effects of high power pulsed laser light on a TiO2 photocatalyst (powder and 0.1% (w/v) aqueous suspension) are reported. When this material was irradiated with a laser of power over 0.8 MW peak pulse power at 355 nm wavelength a visible change in colour from white to dark blue was observed. The initial rate of change of the total colour difference is related to the laser power; the stronger the laser power the darker the colour change. The result of X-ray diffraction studies indicates that the crystal structure of the TiO2 developed a more rutile form after laser exposure. Electron microscopic studies showed that spherical shaped particles of TiO2 were observed after laser treatment. Preliminary results show enhanced photocatalytic activity for the destruction of methylene blue. (C) 1999 Elsevier Science S.A. All rights reserved.

AB - The effects of high power pulsed laser light on a TiO2 photocatalyst (powder and 0.1% (w/v) aqueous suspension) are reported. When this material was irradiated with a laser of power over 0.8 MW peak pulse power at 355 nm wavelength a visible change in colour from white to dark blue was observed. The initial rate of change of the total colour difference is related to the laser power; the stronger the laser power the darker the colour change. The result of X-ray diffraction studies indicates that the crystal structure of the TiO2 developed a more rutile form after laser exposure. Electron microscopic studies showed that spherical shaped particles of TiO2 were observed after laser treatment. Preliminary results show enhanced photocatalytic activity for the destruction of methylene blue. (C) 1999 Elsevier Science S.A. All rights reserved.

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DO - 10.1016/S1010-6030(98)00463-8

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