Preparation, characterization and catalytic activity of gold nanoparticles stabilized by poly (n-vinylpyrrolidone) and poly (N,N-dimethyl-N,N-diallylammonium chloride)
Keywords:
colloidal gold nanoparticles, optical properties, structure, morphologyAbstract
Optical properties, structure and morphology of colloidal gold nanoparticles (AuNPs) stabilized by poly (N-vinylpyrrolidone) (PVP) and poly(N,N-dimethyl-N,N-diallylammonium chloride) (PDMDAAC) were characterized by visible spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The influence of the molecular weight (Mw) of PVP on the size of AuNPs was studied. The catalytic activity of polymer-protected AuNPs with respect to hydrogenation of p-nitrophenol was studied. High conversion degree of 4-nitrophenol to 4-aminophenol was found.
References
2 Shen J., Tenhu H. Recent advances in polymer protected gold nanoparticles: Synthesis, properties and applications // Chemical Communications. – 2007. – Is. 44. - P.4580-4598.
3 Andrea B. R. Mayer, James E. Mark. Colloidal gold nanoparticles protected by water-soluble homopolymers and random copolymers // European Polymer Journal. – 1998. - Vol.34. - P.103-108.
4 Didier Astruc. Nanoparticles and Catalysis. - Willey-VCH, Weinheim, 2008.