Surface hydroxylation of TiO2 yields notable visible-light photocatalytic activity to decompose rhodamine B in aqueous solution

Autor:	Hyunho Shin, Sangwook Lee, Hyun Suk Jung, Tae-Hoon Byun, Shin-Tae Bae
Rok vydání:	2013
Předmět:	Aqueous solution Inorganic chemistry General Chemistry Condensed Matter Physics Photochemistry Decomposition Hydroxylation chemistry.chemical_compound Adsorption chemistry Photocatalysis Rhodamine B Molecule General Materials Science Ball mill
Zdroj:	Journal of Physics and Chemistry of Solids. 74:1136-1142
ISSN:	0022-3697
DOI:	10.1016/j.jpcs.2013.03.013
Popis:	A hydroxyl-rich layer forms on the surface of TiO2 by simple ball milling in aqueous medium. This layer facilitates the surface adsorption of the rhodamine B (RhB) molecules and yields a notable Vis-light photocatalytic activity for RhB decomposition in aqueous solution, demonstrating the efficiency of the simple milling process to impose the notable Vis-light activity. It has been interpreted that Vis-light-excited RhB loses electrons to the surface hydroxyl group more suitably to form RhB+, while dissolved oxygen takes electrons more suitably to form an O 2 − • radical, thereby yielding the notable Vis-light photocatalytic activity by the surface photosensitization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::555e065bf62bee159fc449cb99af64bd https://doi.org/10.1016/j.jpcs.2013.03.013 Zobrazit plný text záznamu Full Text from ScienceDirect