Preparation of Silver Nanoparticles by a Non-Aqueous Sol–Gel Process

Christophe TG Petit, Muath SA Alsulaiman, Rong Lan, Gregory Mann, Shanwen Tao

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Using a non-aqueous sol–gel process with a direct calcination step in air after prior drying, silver nanoparticles with average size distribution ranging from 20 to 100 nm were synthesised. Studies in reduced atmosphere were also performed with mixed results, both in phase and particle size, as the samples were found to be mixed with an amorphous phase. In oxidising atmosphere, the temperature and dwelling time were found to be critical factors with the former playing a larger role than the latter. Optimally nanoparticles of silver are best prepared by direct calcination in air of the precursor gel at 250 °C for 1 hour. Compared to silver particles prepared by microemulsions, the particle size is larger due to the thermal treatment, which causes a growth of the silver particles.
    Original languageEnglish
    Pages (from-to)5445-5451
    Number of pages7
    JournalJournal of Nanoscience and Nanotechnology
    Volume13
    Issue number8
    DOIs
    Publication statusPublished - 1 Aug 2013

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