Article ID Journal Published Year Pages File Type
597449 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2007 6 Pages PDF
Abstract

A green synthetic strategy to prepare monodisperse Pt nanoparticles was reported. Aminodextran acted as the reductive and protective agents, and Pt nanoparticles were conveniently obtained at one step. The as-prepared Pt nanoparticles were characterized by UV/vis spectroscopy (UV–vis), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). By changing the initial molar ratio of aminodextran to platinum precursor, Pt nanoparticles with different size were obtained. Amino groups of aminodextran could absorb on Pt nanoparticles surfaces and serve as a very good stabilizer. However, dextran without amino groups could not effectively stabilize Pt nanoparticles and aggregation of Pt nanoparticles were obtained. Catalytic activity of these Pt nanoparticles for the electron-transfer reaction between hexacyanoferrate (III) ions and thiosulfate ions was also studied, and they showed good catalytic efficiency.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
Authors
, , , ,