Poly(allylamine)-stabilized colloidal copper nanoparticles

Synthesis, morphology, and their surface-enhanced raman scattering properties

Yanfei Wang, Teddy Asefa

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Poly(allylamine)-stabilized spherical- and rod-shaped copper nanoparticles are synthesized by a simple chemical reaction. The synthesis is performed by the reduction of copper(II) salt with hydrazine in aqueous solution under atmospheric air in the presence of poly(allylamine) (PAAm) capping agent. Noteworthy of the advantages of the synthetic method includes its production of water dispersible copper nanoparticles at room temperature under no inert atmosphere, making the synthesis more environmentally friendly. The resulting copper nanoparticles are investigated by UV-vis spectroscopy and transmission electron microscopy (TEM). The results demonstrate that the amount of NaOH used is important for the formation of the copper nanoparticles while the reaction time and concentration of PAAm play key roles in controlling the size and shape of the nanoparticles, respectively. The resulting colloidal copper nanoparticles exhibit large surface-enhanced Raman scattering (SERS) signals.

Original languageEnglish
Pages (from-to)7469-7474
Number of pages6
JournalLangmuir
Volume26
Issue number10
DOIs
Publication statusPublished - May 18 2010

Fingerprint

Allylamine
Raman scattering
Copper
Raman spectra
Nanoparticles
copper
nanoparticles
synthesis
hydrazine
inert atmosphere
Hydrazine
hydrazines
Ultraviolet spectroscopy
reaction time
Chemical reactions
chemical reactions
rods
Salts
aqueous solutions
Transmission electron microscopy

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Poly(allylamine)-stabilized colloidal copper nanoparticles : Synthesis, morphology, and their surface-enhanced raman scattering properties. / Wang, Yanfei; Asefa, Teddy.

In: Langmuir, Vol. 26, No. 10, 18.05.2010, p. 7469-7474.

Research output: Contribution to journalArticle

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