Influence of polyethyleneimine addition on crystal size distribution of Au nanocrystals

T. Mikami, Y. Takayasu, J. Watanabe, I. Hirasawa

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17 Citations (Scopus)

Abstract

The influence of polyethyleneimine (PEI) addition on the crystal size distribution (CSD) of Au was investigated. PEI is a water-soluble cationic polyelectrolyte acting as a reducer of AuCl4- and a stabilizer of precipitated Au nanocrystals. The CSD can be controlled by the PEI dosage, and an increase in PEI dosage decreased both the size and the size distribution width of the obtained Au nanocrystals. The idea of PEI-assisted reductive crystallization of Au may be helpful in the production of nanometals by using a simple batch crystallizer. Au nanocrystals with narrow CSD were precipitated via a polyethyleneimine (PEI)-assisted reductive crystallization process and the influence of PEI addition on the crystal size distribution of Au was investigated. An increase in PEI dosage decreased both the size and the size distribution width of the obtained Au nanocrystals.

Original languageEnglish
Pages (from-to)583-586
Number of pages4
JournalChemical Engineering and Technology
Volume34
Issue number4
DOIs
Publication statusPublished - 2011 Apr 1

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Keywords

  • Nanoparticles
  • Polyelectrolyte additive
  • Reactive crystallization

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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