Enhanced oxidation stability of VO2 by Coating SiO2 layer for smart window applications

Jee Hye Shin, Hee Jung Kim, Ki Bong Lee, Jung Whan Yoo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

SiO2-coated W-VO2(M) nanoparticles were synthesized by a precipitation method and then modified with tetraethylorthosilicate as a precursor using the Stöber process, to enhance oxidation stability. W-VO2(M) nanoparticles were uniformly coated with a SiO2 layer approximately 25 nm in thickness. Based on XRD and DSC characterization, the crystal structure and phase transition temperature of SiO2-coated W-VO2(M) are almost the same as before SiO2 coating. Upon exposure to 80% water vapor pressure at 80 C, the coated nanoparticles maintain their structure, phase transition temperature, and morphology for a longtime compared to uncoated W-VO2(M) particles, and show improved oxidation stability.

Original languageEnglish
Pages (from-to)510-513
Number of pages4
JournalNanoscience and Nanotechnology Letters
Volume8
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

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Keywords

  • Core-Shell Structure
  • Energy Efficiency
  • Oxidation Stability
  • Phase Transition Nanoparticle
  • Vanadium Dioxide

ASJC Scopus subject areas

  • Materials Science(all)

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