title: Biotemplated aqueous-phase palladium crystallization in the absence of external reducing agents.
abstract: A new synthetic strategy enabling highly controlled aqueous-phase palladium crystallization on the tobacco mosaic virus (TMV) is demonstrated without the addition of external reducing agents. This low cost, solution processing method yields continuous and uniform coatings of polycrystalline palladium on TMV, creating highly uniform palladium nanowires of tens of nanometers in thickness and hundreds of nanometers in length. Our approach utilizes a palladium chloride precursor to produce metallic Pd coatings on TMV without the need for an external reducing agent. X-ray photoelectron spectroscopy and in situ transmission electron microscopy were used to confirm the reduction of the surface palladium oxide layer on the palladium metal wires during room temperature hydrogenation. This leads to metallic palladium nanowires with surfaces free of residual organics, making these structures suitable for applications in nanoscale electronics.
authors.affiliation: School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: Jung-Sun
authors.initials: JS
authors.lastname: Lim
authors.forename: Seung-Min
authors.initials: SM
authors.lastname: Kim
authors.forename: Sang-Yup
authors.initials: SY
authors.lastname: Lee
authors.forename: Eric A
authors.initials: EA
authors.lastname: Stach
authors.forename: James N
authors.initials: JN
authors.lastname: Culver
authors.forename: Michael T
authors.initials: MT
authors.lastname: Harris
mesh_terms: D003460:Crystallization / Q000191:economics / Q000379:methods*; D036103:Nanotechnology / Q000191:economics / Q000379:methods*; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D014027:Tobacco Mosaic Virus / Q000737:chemistry*
chemical_list: D010165:Palladium; C008756:palladium chloride