title: Engineering the metathesis and oxidation-reduction reaction in solid state at room temperature for nanosynthesis.
abstract: It is a long-standing goal to explore convenient synthesis methodology for functional materials. Recently, several multiple-step approaches have been designed for photocatalysts Ag(n)X@Ag (X = Cl(-), PO4(3-), etc.), mainly containing the ion-exchange (metathesis) reaction followed by photoreduction in solution. But they were obsessed by complicated process, the uncontrollability of composition and larger sizes of Ag particles. Here we show a general solid-state route for the synthesis of Ag(n)X@Ag catalysts with hierarchical structures. Due to strong surface plasmon resonance of silver nanoparticles with broad shape and size, the Ag(n)X@Ag showed high photocatalytic activity in visible region. Especially, the composition of Ag(n)X@Ag composites could be accurately controlled by regulating the feed ratio of (NH2OH)2 ·H2SO4 to anions, by which the performance were easily optimized. Results demonstrate that the metathesis and oxidation-reduction reactions can be performed in solid state at room temperature for nanosynthesis, greatly reducing the time/energy consumption and pollution.
authors.affiliation: Laboratory for Microstructures, Shanghai University, Shangda Road 99, Shanghai 200444, P. R. China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Hu
authors.affiliation: Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang 830046, P. R. China.
authors.forename: Yali
authors.initials: Y
authors.lastname: Cao
authors.affiliation: Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang 830046, P. R. China.
authors.forename: Dianzeng
authors.initials: D
authors.lastname: Jia
authors.affiliation: Laboratory for Microstructures, Shanghai University, Shangda Road 99, Shanghai 200444, P. R. China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Chemical Engineering, School of Environment and Chemical Engineering, Shanghai University, Shangda Road 99, 200444, Shanghai, P. R. China.
authors.forename: Ruili
authors.initials: R
authors.lastname: Liu