title: Tri- and quadri-metallic ultrathin nanowires synthesized by one-step phase-transfer approach.
abstract: We synthesized, at room temperature, noble multi-metallic (Pt-Pd-Rh, and Pt-Pd-Au-Rh) ultrathin nanowires using a one-step phase-transfer approach. These multi-metallic nanowires then were characterized by x-ray diffraction, transmission electron microscopy, and scanning transmission electron microscopy. The diameters of the nanowires range from 2 to 2.7 nm, and their lengths from tens to hundreds of nanometers. The multi-metallic nanowires were determined to be face-centered cubic structures. The compositions of the nanowires are quite uniform from wire to wire. Our results verify that the phase-transfer is a robust method for synthesizing various multi-metallic nanowires, which are expected to have potential applications in catalysis, magnetic storage, and bio-sensors.
authors.affiliation: Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA. whan@bnl.gov
authors.forename: Wei-Qiang
authors.initials: WQ
authors.lastname: Han
authors.forename: Dong
authors.initials: D
authors.lastname: Su
authors.forename: Lijun
authors.initials: L
authors.lastname: Wu
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Aoki
authors.forename: Yimei
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D006046:Gold / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission / Q000379:methods; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010165:Palladium / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D010984:Platinum; D010165:Palladium; D006046:Gold; D012238:Rhodium