Laser-flash-photolysis-spectroscopy: A nondestructive method?

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Schneider, J.; Nikitin, K.; Dillert, R.; Bahnemann, D.W.: Laser-flash-photolysis-spectroscopy: A nondestructive method?. In: Faraday Discussions 197 (2017), S. 505-516. DOI:

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Herein, we report the effect of the laser illumination during the diffuse-reflectance laser-flash-photolysis measurements on the morphological and optical properties of TiO2 powders. A grey-blue coloration of the TiO2 nanoparticles has been observed after intense laser illumination. This is explained by the formation of nonreactive trapped electrons accompanied by the release of oxygen atoms from the TiO2 matrix as detected by means of UV-vis and EPR spectroscopy. Moreover, in the case of the pure anatase sample a phase transition of some TiO2 nanoparticles located in the inner region from anatase to rutile occurred. It is suggested that these structural changes in TiO2 are caused by an energy and charge transfer to the TiO2 lattice.
License of this version: CC BY-NC 3.0
Document Type: article
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Naturwissenschaftliche Fakultät

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1 image of flag of Germany Germany 70 83.33%
2 image of flag of China China 4 4.76%
3 image of flag of No geo information available No geo information available 1 1.19%
4 image of flag of Korea, Republic of Korea, Republic of 1 1.19%
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10 image of flag of Bangladesh Bangladesh 1 1.19%
    other countries 2 2.38%

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