PEI-assisted preparation of Au nanoparticles via reductive crystallization process

Takashi Mikami, Yuta Takayasu, Izumi Hirasawa

    Research output: Contribution to journalArticle

    19 Citations (Scopus)

    Abstract

    Nano-sized gold particles were prepared in a solution containing polyethylenimine (PEI) utilizing a batch reactor. PEI acts as a reducing agent as well as a stabilizing agent of nanoparticles. The effects of initial concentration of PEI on the mean particle diameter, coefficient of variation (C.V.), growth rate, nucleation rate and the number of nuclei were studied. The particle diameter of gold decreased markedly with increasing initial concentration of PEI, from 3.3 μm to a minimum value of about 5 nm. The observed decrease of particle diameter was considered to be caused by the growth-inhibiting effect of PEI, which affects the conclusive number of nuclei.

    Original languageEnglish
    Pages (from-to)1248-1251
    Number of pages4
    JournalChemical Engineering Research and Design
    Volume88
    Issue number9
    DOIs
    Publication statusPublished - 2010 Sep

    Fingerprint

    Polyethyleneimine
    Crystallization
    Gold
    Nanoparticles
    Batch reactors
    Reducing agents
    Nucleation
    Excipients
    Reducing Agents

    Keywords

    • Nanoparticles
    • Polyelectrolyte additive
    • Reductive crystallization

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    PEI-assisted preparation of Au nanoparticles via reductive crystallization process. / Mikami, Takashi; Takayasu, Yuta; Hirasawa, Izumi.

    In: Chemical Engineering Research and Design, Vol. 88, No. 9, 09.2010, p. 1248-1251.

    Research output: Contribution to journalArticle

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