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Synthesis of silica particles with precisely tailored diameter

  • Harbin Institute of Technology
  • School of Chemistry and Chemical Engineering, Harbin Institute of Technology
  • Shenyang Institute of Engineering

Research output: Contribution to journalArticlepeer-review

Abstract

A modified seeded growth process of silica particles with a continuous addition of tetraethyl orthosilicate (TEOS) was presented to control the diameter of silica particles. The diameter of particles was monitored by dynamic light scattering to control the addition of TEOS. The increase in the diameter of the silica particles with time and the addition of TEOS was investigated. The diameter of silica seeds increased from 193 nm to 446 nm in 4 h. The final diameter of silica particles was tailored within the range of ±5 nm to the target diameter. Silica particles with diameter of 446 nm were synthesized and assembled into photonic crystals with a pseudo band gap centered at just 1000 nm. The feasibility and practicability of this modified seeded growth process was verified.

Original languageEnglish
Pages (from-to)563-567+ii
JournalChinese Journal of Chemical Physics
Volume27
Issue number5
DOIs
StatePublished - 27 Oct 2014

Keywords

  • Dynamic light scattering
  • Photonic crystal
  • Seeded growth process
  • Silica particle

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