Intercalation of well-dispersed gold nanoparticles into layered oxide nanosheets through intercalation of a polyamine

Hideo Hata, Shoichi Kubo, Yoji Kobayashi, Thomas E. Mallouk

    Research output: Contribution to journalArticlepeer-review

    51 Citations (Scopus)

    Abstract

    Well-dispersed 1-6 nm diameter gold nanoparticles were intercalated into the interlayer galleries of lamellar oxides by first intercalating with poly(allylamine) (PAA) or poly(diallyldimethylammonium) ions to invert the layer charge. This reaction was demonstrated for an exfoliated fluoromica as well as a Dion-Jacobson phase layer perovskite (HCa2Nb3O10). In the PAA case, the nanoparticles were intercalated with very little aggregation. Larger (3-6 nm diameter) gold nanoparticles could also be intercalated, but some aggregates were observed on outer surface of the host solids. FTIR spectra of the samples suggest that the weak covalent-bonding interaction between excess free primary amine groups of the PAA chains and the Au nanoparticle surface drives the nanoparticle intercalation reaction. Copyright

    Original languageEnglish
    Pages (from-to)3064-3065
    Number of pages2
    JournalJournal of the American Chemical Society
    Volume129
    Issue number11
    DOIs
    Publication statusPublished - 2007 Mar 21

    ASJC Scopus subject areas

    • Catalysis
    • Chemistry(all)
    • Biochemistry
    • Colloid and Surface Chemistry

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