Shape-Controlled Synthesis of Gold and Silver Nanoparticles

  title={Shape-Controlled Synthesis of Gold and Silver Nanoparticles},
  author={Yugang Sun and Younan Xia},
  pages={2176 - 2179}
Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP). These cubes were single crystals and were characterized by a slightly truncated shape bounded by {100}, {110}, and {111} facets. The presence of PVP and its molar ratio (in terms of repeating unit) relative to silver nitrate both played important roles in determining the geometric shape and size of the product. The silver… 
Shape‐Controlled Synthesis of Gold and Silver Nanoparticles.
Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP). These cubes were single
Directed surface overgrowth and morphology control of polyhedral gold nanocrystals.
It is anticipated that such a Au/Ag UPD system can be employed as a general tool for directed growth of {111} faces, whereas addition of Au enhances {100} growth to stabilize the entire polyhedral structure.
Recent Developments in Shape-Controlled Synthesis of Silver Nanocrystals.
It is demonstrated that citrate and PVP selectively bind to Ag(111) and Ag(100) surfaces, respectively, and thus favor the formation of Ag nanocrystals enclosed preferentially by {111} or {100} facets.
Shape-controlled synthesis of metal nanostructures: the case of silver.
Investigating the growth mechanisms for silver nanocubes, nanowires, and nanospheres produced through a polymer-mediated polyol process found that the crystallinity of a seed and the extent of the PVP coverage on the seed were both instrumental in controlling the morphology of final product.
Size Control of Monodisperse Copper Sulfide Faceted Nanocrystals and Triangular Nanoplates
High-quality faceted nanocrystals and triangular nanoplates of copper sulfide have been successfully synthesized by using the single source precursor method in the presence of oleylamine. The
Facile synthesis of single-crystal and controllable sized silver nanoparticles on the surfaces of polyacrylonitrile nanofibres
A simple method has been demonstrated for the synthesis of single-crystal and controllable sized silver nanoparticles (Ag NPs) homogeneously distributed on the surfaces of polyacrylonitrile (PAN)
Linear Assemblies of Monodisperse Silver Nanoparticles on Micro/Nanofibrillar Cellulose
Uniform silver nanoparticles with diameters smaller than 10 nm have been synthesized by the hydrothermal method on micro/nanofibrils of cellulose, which is used as a substrate, in a solution
Aspartic Acid Synthesis of Crystalline Gold Nanoplates, Nanoribbons, and Nanowires in Aqueous Solutions
A facile, environmentally benign shape-controlled synthesis of anisotropic crystalline gold nanostructures at room temperature has been developed using aspartic acid (Asp) as the reducing,
Synthesis and characterization of hollow silver spheres at room temperature
Hollow silver spheres were synthesized at room temperature using sodium borohydride (NaBH4) as the reducing reagent and poly (vinyl pyrrolidone) (PVP) as the surfactant. The size of the synthesized
Halide-Directed Synthesis of Square Prismatic Ag Nanocrystals by the Polyol Method
Achieving shape control of high-quality metal nanocrystals is a critical challenge in the fabrication of bottom-up plasmonic materials. Here, we synthesize a uniquely anisotropic Ag nanocrystal shape


Template-Engaged Replacement Reaction: A One-Step Approach to the Large-Scale Synthesis of Metal Nanostructures with Hollow Interiors
This paper describes a general approach that generates nanoscale hollow structures of metals by reacting solutions of appropriate salt solutions with solid templates of a more reactive metal. Typical
Synthesis and characterization of fine and monodisperse silver particles of uniform shape
Fine silver particles of uniform size and shape have been synthesized from silver nitrate in hot ethylene glycol. Quasi-spheric and monodisperse silver particles are produced only when particle
Shape-Controlled Synthesis of Colloidal Platinum Nanoparticles
Tetrahedral, cubic, irregular-prismatic, icosahedral, and cubo-octahedral particle shapes were observed, whose distribution was dependent on the concentration ratio of the capping polymer material to the platinum cation.
Synthesis and Magnetic Properties of Nickel Nanorods
Nickel nanoparticles of tunable shape have been synthesized in THF, in the presence of hexadecylamine (HDA) or trioctylphosphineoxide (TOPO), in mild conditions and characterized by HREM and SQUID
Preparation of monodispersed metal particles
This review article deals with the preparation, characterization and mechanisms of formation of uniform simple and composite metal particles of different modal diameters and shapes. In principle,
Surface Spectroscopic Study of the Stabilization Mechanism for Shape-Selectively Synthesized Nanostructured Transition Metal Colloids
Nanoscale palladium and nickel colloids prepared in the presence of certain tetra-n-octylammonium carboxylates contain a high proportion of nonequilibrium trigonal cross section particles.
Study of interaction of ethylene glycol/PVP phase on noble metal powders prepared by polyol process
Noble metal powders (Au, Ag, Pt, Pd and Ru) have been synthesized by the polyol process in both the nanometer and submicron scales (sans Pd, Pt and Ru). They have been characterized by both
Monodisperse 3 d Transition-Metal (Co,Ni,Fe) Nanoparticles and Their Assembly intoNanoparticle Superlattices
Magnetic colloids, or ferrofluids, have been studied to probe the fundamental size-dependent properties of magnetic particles and have been harnessed in a variety of applications. The
Structural studies of trigonal lamellar particles of gold and silver
The results of detailed structural studies of trigonal lamellar particles of both gold and silver are presented. The particles have been characterized both in sol by means of optical spectroscopy and
PVP Protective Mechanism of Ultrafine Silver Powder Synthesized by Chemical Reduction Processes
Polyvinyl pyrrolidone (PVP) as a protective agent plays a decisive part in controlling superfine silver particle size and size distribution by reducing silver nitrate with hydrazine hydrate. The