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  • Title: Synthesis of silica-gold nanocomposites and their porous nanoparticles by an in-situ approach.
    Author: Kumar A, Pushparaj VL, Murugesan S, Viswanathan G, Nalamasu R, Linhardt RJ, Nalamasu O, Ajayan PM.
    Journal: Langmuir; 2006 Oct 10; 22(21):8631-4. PubMed ID: 17014096.
    Abstract:
    We demonstrate the one-step synthesis of a silica-gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica-gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica-gold nanocomposite exhibited nonlinear current-voltage behavior, and the porous gold nanoparticles displayed linear current-voltage behavior.
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