title: Transition-Metal-Complex Cationic Dyes Photosensitive to Two Types of 2D Layered Silver Bromides with Visible-Light-Driven Photocatalytic Properties.
abstract: With mixed transition-metal (TM) complex, alkali-metal cations, or halogen anions as structure-directing agents, two types of two-dimensional (2D) layered inorganic-organic hybrid silver bromides were prepared and structurally characterized as K[TM(2,2-bipy)3]2Ag6Br11(TM = Ni (1), Co (2), Zn (3), Fe (4)) and [TM(2,2-bipy)3]2Ag13Br17(TM = Ni (5), Co (6), Zn (7), Fe (8)). Compounds 1-4 feature 2D microporous anionic [Ag6Br11]5-layers composed of [Ag3Br7] secondary building units based on AgBr4tetrahedral units, and compounds 5-8 contain 2D [Ag13Br16]3-layers built from the one-dimensional complex [Ag8Br12] and [Ag5Br8] chains. The photosensitization of TM complex dyes led to the narrow semiconducting behaviors with tunable band gaps of 1.73-2.71 eV for the title compounds, which result in excellent and stable photocatalytic degradation activities over organic pollutants under visible-light irradiation. The studies of photocatalytic mechanism based on radical-trapping experiments and electronic band structural calculation show that the TM complex cations play important roles in the photocatalytical activities and photochemical stabilities due to their excellent separating abilities for photogenerated carriers. This technique affords one new type of visible-light-driven photocatalyst and facilitates the integration of 2D layered materials and semiconducting photocatalytic properties into one hybrid d10TM halogenide.
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.|State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China.
authors.forename: Cheng-Yang
authors.initials: CY
authors.lastname: Yue
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Xiao-Wu
authors.initials: XW
authors.lastname: Lei
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Yong-Fang
authors.initials: YF
authors.lastname: Han
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Xin-Xiu
authors.initials: XX
authors.lastname: Lu
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Ya-Wei
authors.initials: YW
authors.lastname: Tian
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Xiao-Fan
authors.initials: XF
authors.lastname: Liu
authors.affiliation: Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering, Jining University , Qufu, Shandong 273155, P. R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Xu