Structure, Stability and Catalytic Activity of Chemically Synthesized Pt, Au, and Au–Pt Nanoparticles

Abstract

Small (1-5 nm) metallic nanoparticles of Pt, Au, and Au/Pt of different nominal compositions in colloidal form were synthesized by a chemical reduction method using polymer (PVP) as protecting agent. Analytical techniques like HREM and UV-vis spectroscopy have been used to characterize the morphology and structural properties of these small particles. Theoretical simulations based on molecular dynamical have been used to interpret the experimental structural results and analyze the macroscopic properties like stability and catalytic selectivity of these nanoparticles based on the morphology and atomic distribution in the clusters.

Use of recombinant rotavirus VP6 nanotubes as a multifunctional template for the synthesis of nanobiomaterials functionalized with metals

“…The synthesis of palladium nanoparticles and palladiumfunctionalized nanomaterials are of interest for their electronic and catalytic properties (Dujardin et al, 2003;Gazit, 2007;Knez et al, 2004) and their chemical selectivity, which is especially suitable for fuel cell devices (Esparza et al, 2005). The size and distribution of nanoparticles synthesized using Pd(CH 3 CN) 2 Cl 2 as precursor also depended on the reducing agent used.…”

One‐Pot Synthesis of Core‐Shell Silver‐Gold Nanoparticle Solutions and Their Interaction with Methylene Blue Dye

“…[14][15][16] The five different bimetallic nanoparticle formulations that can form for gold and silver are shown in Scheme 1. Investigations into bimetallic noble metal alloy combinations such as Pt-Ru, Cu-Pd, Pt-Mo, Pt-W, Pt-Ni and Au-Ag have been made, [17][18][19][20][21] where the Au-Ag combination is the most extensively studied due, in part, to the fact that both the Ag and Au nanoparticles display distinctive optical plasmon absorbances in the visible range. [22][23][24][25] The optical and catalytic properties of the Ag and Au nanoparticles are useful in a diverse range of applications.…”

Structural analysis and shape-dependent catalytic activity of Au, Pt and Au/Pt nanoparticles

“…Utilizing the chemical reduction method, metallic nanoparticles in an extensive size range could be produced [14,17]. As the colloidal solutions prepared usually contain particles of different sizes, it is necessary to obtain their average size and size distribution before applying them in a membrane-electrode assembly (MEA).…”