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

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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.

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Authors and Affiliations

  1. Centre for Material and Fibre Innovation, Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, 3217, Australia

    Jinfeng Wang, Takuya Tsuzuki, Bin Tang, Pavel Cizek, Lu Sun & Xungai Wang

Authors
  1. Jinfeng Wang
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  2. Takuya Tsuzuki
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  3. Bin Tang
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  4. Pavel Cizek
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  5. Lu Sun
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  6. Xungai Wang
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Corresponding author

Correspondence to Lu Sun.

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Fig. S1

TGA curves of uncoated PVP-capped ZnO nanoparticles and silica-coated PVP-capped ZnO nanocomposite. (DOC 81 kb)

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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Wang, J., Tsuzuki, T., Tang, B. et al. Synthesis of silica-coated ZnO nanocomposite: the resonance structure of polyvinyl pyrrolidone (PVP) as a coupling agent. Colloid Polym Sci 288, 1705–1711 (2010). https://doi.org/10.1007/s00396-010-2313-8

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  • DOI: https://doi.org/10.1007/s00396-010-2313-8

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