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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1705-1711
Number of pages7
JournalColloid and Polymer Science
Volume288
Issue number18
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Dive into the research topics of 'Synthesis of silica-coated ZnO nanocomposite: The resonance structure of polyvinyl pyrrolidone (PVP) as a coupling agent'. Together they form a unique fingerprint.

Cite this