A Simple Water-Based Synthesis of Au Nanoparticle/PDMS Composites for Water Purification and Targeted Drug Release

Authors

  • Adina Scott,

    Corresponding author
    1. Birck Nanotechnology Center, Purdue University, 1205 W. State St. West Lafayette, IN 47907, USA
    • Birck Nanotechnology Center, Purdue University, 1205 W. State St. West Lafayette, IN 47907, USA Fax: +1 765 494 0811.
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  • Ritu Gupta,

    1. Chemistry and Physics of Materials Unit and DST Unit on Nanotechnology, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur PO, Bangalore 560 064, India
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  • Giridhar U. Kulkarni

    1. Chemistry and Physics of Materials Unit and DST Unit on Nanotechnology, Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur PO, Bangalore 560 064, India
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Abstract

AuNP/PDMS nanocomposites have been synthesized in the form of gels, foams, and films with distinctive structure and morphology. A simple in situ process in aqueous medium for the formation of such composite materials is described. The nanoparticles are held firmly within the PDMS while still being chemically accessible to substances soluble in PDMS. We demonstrate the utility of this property for water purification applications such as removing aromatic solvents and sulfur-containing contaminants from water. The contaminants can be freed from the composite with a simple thermal treatment, allowing the material to be reused. We also demonstrate chemically selective uptake and release of a fluorescent dye by the nanocomposite as a drug delivery model system.

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