Colloid and Polymer Science

, Volume 288, Issue 18, pp 1705–1711 | Cite as

Synthesis of silica-coated ZnO nanocomposite: the resonance structure of polyvinyl pyrrolidone (PVP) as a coupling agent

  • Jinfeng Wang
  • Takuya Tsuzuki
  • Bin Tang
  • Pavel Cizek
  • Lu Sun
  • Xungai Wang
Original Contribution
First Online:
Received:
Revised:
Accepted:

Abstract

The preparation of silica-coated ZnO nanocomposite using polyvinyl pyrrolidone (PVP) as a coupling agent was investigated. Transmission electron microscopy analysis revealed that silica has been deposited on the surface of PVP-capped ZnO nanoparticles as a continuous thin layer. Two-dimensional correlation analysis based on the time-dependent UV–vis spectra was introduced to study the interaction governing the deposition of silica on to PVP-capped ZnO. Strong hydrogen bonds formed between the amphiphilic PVP molecules and silica in the silica-coated PVP-capped ZnO composites. The reduced photocatalytic activity of silica-coated ZnO nanoparticles will enhance their performance as durable, safe, and non-reactive UV blockers in plastics, paints, and coating for outdoor textile and timber products.

Keywords

ZnO nanoparticles PVP Coupling agent Photocatalytic activity 
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Supplementary material

396_2010_2313_MOESM1_ESM.doc (81 kb)
Fig. S1 TGA curves of uncoated PVP-capped ZnO nanoparticles and silica-coated PVP-capped ZnO nanocomposite. (DOC 81 kb)
396_2010_2313_MOESM2_ESM.doc (1.8 mb)
Fig. S2 TEM micrographs of silica-coated PVP-capped ZnO nanocomposites prepared with different reaction time, (a) 7, (b) 18, (c) 24, and (d) 48 h. (DOC 1792 kb)

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Jinfeng Wang
    • 1
  • Takuya Tsuzuki
    • 1
  • Bin Tang
    • 1
  • Pavel Cizek
    • 1
  • Lu Sun
    • 1
  • Xungai Wang
    • 1
  1. 1.Centre for Material and Fibre Innovation, Institute for Technology Research and InnovationDeakin UniversityGeelongAustralia

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