Preparation and characterization of porous silica films by a modified base-catalyzed sol-gel process containing PVA: I. The precursor solution synthesis

Y. Liu*, H. D. Chen, L. Zhang, X. Yao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A novel modified base-catalyzed Sol-Gel process containing polyvinyl alcohol (PVA) has been proposed to prepare the porous SiO2 film. In this process, the growth of the sol particles was artificially broken off and controlled by acid-stabilising agent and PVA. As a result, a uniform and stable precursor solution was obtained in which the size of sol particles was stable. This new process efficiently overcomes the shortcomings of the traditional base-catalysed Sol-Gel process and can be employed to prepare porous SiO2 films with desired porosity and thickness. The influence of the catalyst, the reaction temperature, the pH value, the stabilizing agent and the PVA additive on the size of the SiO2 sol particles is systematically studied in part I.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalJournal of Sol-Gel Science and Technology
Volume25
Issue number2
DOIs
StatePublished - 1 Sep 2002

Keywords

  • Base-catalysis
  • Porous SiO
  • Thin film

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