title: Nanospace-enhanced photoreduction for the synthesis of copper(I) oxide nanoparticles under visible-light irradiation.
abstract: Nanoparticles of copper(I) oxide (cuprous oxide; Cu2O) were able to be synthesized from nano-restricted copper acetate (Cu(OAc)2) in micropores of single-wall carbon nanotubes (SWNTs) by visible-light photoreduction. The specific structure of confined Cu(OAc)2 in the micropore is indispensable for the reduction process to Cu2O by the irradiation, because, in general, aqueous solution of Cu(OAc)2 can be reduced under UV-light irradiated conditions. The present results strongly suggest that the micropore of SWNTs whose pore width is in the micropore-size range can play as nanoreactor space for the synthesis of Cu2O through the nano-restricted precursor whose reactivity is different from that in the bulk phase.
authors.affiliation: Department of Chemistry, Faculty of Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan. Electronic address: ohkubo@okayama-u.ac.jp.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ohkubo
authors.affiliation: Department of Chemistry, Faculty of Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Ushio
authors.affiliation: Division of Chemistry and Material Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyomachi, Nagasaki 852-8521, Japan.
authors.forename: Koki
authors.initials: K
authors.lastname: Urita
authors.affiliation: Division of Chemistry and Material Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyomachi, Nagasaki 852-8521, Japan.
authors.forename: Isamu
authors.initials: I
authors.lastname: Moriguchi
authors.affiliation: Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.
authors.forename: Bashir
authors.initials: B
authors.lastname: Ahmmad
authors.affiliation: Department of Chemistry, Faculty of Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan; Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshidaushinomiyacho, Sakyou-ku, Kyoto 606-8501, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Itadani
authors.affiliation: Department of Chemistry, Faculty of Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
authors.forename: Yasushige
authors.initials: Y
authors.lastname: Kuroda
mesh_terms: D003300:Copper / Q000737:chemistry*; D008027:Light; D053768:Metal Nanoparticles; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D033362:Powder Diffraction; D056928:X-Ray Absorption Spectroscopy
chemical_list: D003300:Copper; C000520:cuprous oxide
keywords: Adsorption; Cuprous oxide (Cu(2)O); Nanoparticle; Photoreduction; Single-wall carbon nanotube; XAFS