title: Ag nanoprisms with Ag₂S attachment.
abstract: Triangular Ag nanoprisms are a type of most-studied noble-metal nanostructures over the past decade owing to their special structural architecture and outstanding optical and catalytic properties for a wide range of applications. Nevertheless, in contrast to active research for the synthesis of phase-pure Ag nanoprisms, no asymmetric heterodimers containing Ag prisms have been developed so far, probably due to lack of suitable synthetic methods. Herein, we devise a simple ion-exchange method to synthesize Ag2S/Ag heterodimers at room temperature, through which Ag nanoprisms with controllable size and thickness can be fabricated. Formation chemistry and optical properties of the heterodimers have been investigated. These semiconductor/metal heterodimers have exhibited remarkable bactericidal activity to E. coli cells under visible light illumination.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore.
authors.forename: Shenglin
authors.initials: S
authors.lastname: Xiong
authors.forename: Baojuan
authors.initials: B
authors.lastname: Xi
authors.forename: Kang
authors.initials: K
authors.lastname: Zhang
authors.forename: Yifei
authors.initials: Y
authors.lastname: Chen
authors.forename: Jianwen
authors.initials: J
authors.lastname: Jiang
authors.forename: Jiangyong
authors.initials: J
authors.lastname: Hu
authors.forename: Hua Chun
authors.initials: HC
authors.lastname: Zeng