Synthesis and characterization of TiO2/Ag/polymer ternary nanoparticles via surface-initiated atom transfer radical polymerization

Jung Tae Park, Joo Hwan Koh, Jin Ah Seo, Yong Soo Cho, Jong Hak Kim

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18 Citations (Scopus)

Abstract

We report on the novel ternary hybrid materials consisting of semiconductor (TiO2), metal (Ag) and polymer (poly(oxyethylene methacrylate) (POEM)). First, a hydrophilic polymer, i.e. POEM, was grafted from TiO 2 nanoparticles via the surface-initiated atom transfer radical polymerization (ATRP) technique. These TiO2-POEM brush nanoparticles were used to template the formation of Ag nanoparticles by introduction of a AgCF3SO3 precursor and a NaBH4 aqueous solution for reduction process. Successful grafting of polymeric chains from the surface of TiO2 nanoparticles and the in situ formation of Ag nanoparticles within the polymeric chains were confirmed using transmission electron microscopy (TEM), UV-vis spectroscopy, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). FT-IR spectroscopy also revealed the specific interaction of Ag nanoparticles with the C=O groups of POEM brushes. This study presents a simple route for the in situ synthesis of both metal and polymer confined within the semiconductor, producing ternary hybrid inorganic-organic nanomaterials.

Original languageEnglish
Pages (from-to)8301-8306
Number of pages6
JournalApplied Surface Science
Volume257
Issue number20
DOIs
Publication statusPublished - 2011 Aug 1

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All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

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