Anisotropic Photochemical Reactivity of Bulk TiO2 Crystals

Autor:	Gregory S. Rohrer, J. B. Lowekamp and, and J. D. Bolt, P.A.Morris Hotsenpiller, W. E. Farneth
Rok vydání:	1998
Předmět:	Surface (mathematics) Aqueous solution Materials science Plane (geometry) Surfaces Coatings and Films Metal Crystallography Rutile visual_art Materials Chemistry visual_art.visual_art_medium Photochemical reactivity Crystallite Physical and Theoretical Chemistry Anisotropy
Zdroj:	The Journal of Physical Chemistry B. 102:7323-7327
ISSN:	1520-5207 1520-6106
DOI:	10.1021/jp982721e
Popis:	Polished and annealed surfaces of randomly textured rutile polycrystals were used to photochemically reduce Ag+ to Ag metal in an aqueous solution. By correlating the surface orientations of more than 100 individual crystallites with the amount of deposited Ag, we conclude that the most reactive orientations lie near the {101} plane. Most annealed rutile surfaces are microscopically faceted so that they locally expose planes that are not parallel to the crystallite's average surface. The observations reported here indicate that the anisotropy of rutile's photochemical properties derives from differences in the properties of specific surface planes rather than the bulk crystallite orientation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::197149e0b5bcd6ec272b3e2de8931b63 https://doi.org/10.1021/jp982721e Zobrazit plný text záznamu