コイケ　タカヨシ   KOIKE Takayoshi   小池　崇喜    所属   理工学部 総合理工学科    職種   特任准教授
言語種別	英語
発行・発表の年月	2004
形態種別	学術雑誌
査読	査読あり
標題	Dynamics and mechanistic features in the photocatalyzed oxidation of disulfonated anionic surfactants on the surface of UV-irradiated titania nanoparticles
執筆形態	共著
掲載誌名	New Journal of Chemistry
巻・号・頁	28(9),pp.1100-1106
著者・共著者	Hisao Hidaka, Takayoshi Koike, Teruo Kurihara, Nick Serpone
概要	The photocatalyzed transformation of the anionic 4-dodecyl-1,1'-oxybisbenzenedisulfonate (DOBS) surfactant and its derivs. was carried out in aq. TiO2 dispersions under UV and aerated illumination conditions to examine the dynamics and the mechanistic features of the degradative processes. Spectroscopic and other methodologies were used to probe the break-up of the arom. ring, the mineralization of the surfactant(s) to carbon dioxide, decay of total org. carbon (TOC) remaining in soln., formation of sulfate ions, and identification of oxidn. intermediates (e.g., acetic acid, formic acid and acetaldehyde) by NMR spectroscopy. Adsorption of DOBS, in particular, and the other anionic surfactant derivs. in general, on the TiO2 particle surface was inferred from the calcd. point charges. Frontier electron densities of all atoms ascertained the positions of OH radical attack on the DOBS mol. skeleton.