title: Ag(+)-inserted NbO(2)F as a Novel Photocatalyst.
abstract: The insertion of Ag(+) into NbO(2)F narrowed the band gap from 3.2 eV (NbO(2)F) to 3.0 eV (Ag-NbO(2)F), which shifted the light absorption edge from the UV light region to the near-violet light region. The photocatalytic activities of NbO(2)F and Ag-NbO(2)F were evaluated by the decomposition of gaseous 2-propanol (IPA) under 400-530 and 300-400 nm light irradiations. Ag-NbO(2)F could decompose IPA to CO(2) via acetone under both irradiation conditions. The value of the quantum efficiency was of the same order under both 400-530 and 300-400 nm light irradiations, which suggested the complete hybridization of the Ag4d and O2p orbitals in the valence band of Ag-NbO(2)F resulted in the 400-530 nm light sensitivity. The density of states calculations also supported the complete mixing of Ag4d and O2p.
authors.affiliation: Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Murase
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Irie
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Hashimoto