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

Version 2 2024-06-05, 03:44
Version 1 2014-10-28, 09:15
journal contribution
posted on 2024-06-05, 03:44 authored by J Wang, T Tsuzuki, Bin TangBin Tang, Pavel CizekPavel Cizek, L Sun, X Wang
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 silicacoated PVP-capped ZnO composites. The reduced photocatalytic activity of silica-coated ZnO nanoparticles will enhance their performance as durable, safe, and nonreactive UV blockers in plastics, paints, and coating for outdoor textile and timber products.

History

Journal

Colloid and polymer science

Volume

288

Pagination

1705-1711

Location

Heidelberg, Germany

ISSN

0303-402X

eISSN

1435-1536

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2010, Springer-Verlag

Issue

18

Publisher

Springer