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

52 Scopus citations

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© 2007 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)3064-3065
Number of pages2
JournalJournal of the American Chemical Society
Volume129
Issue number11
DOIs
StatePublished - Mar 21 2007
Externally publishedYes

ASJC Scopus subject areas

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

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