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The preparation of solvent-free SiO 2 nanofluids and the study of their conductivity

  • Lan Lan
  • , Ya Ping Zheng
  • , Jiao Xia Zhang
  • , Pei Ying Yu
  • , Wei Shi
  • , Xiao Dong Yang
  • , Jiang Hong Li
  • Northwestern Polytechnical University Xian

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this article, the SiO 2 nanoparticles were used as the core, 3-(trihydroxysilyl)-1-propane-sulfonic acid was covalently grafted on to the surface of SiO 2 via the dehydration reaction, and then polyoxyethylene octadecylamine (Ethomeen 18/25) was introduced to the surface of modified nanoparticles by electrovalent bonding. The organic/inorganic hybrid nanomaterials exist as golden yellow transparent liquid at room temperature, that is called solvent-free nanofluids. The SiO 2 nanoparticles aremono-disperse in the hybrid nanomaterials system. The content of SiO 2 nanoparticles reaches up to 20w%t. The conductivity reacheses 10 -3S/cm. It exhibits great potential application values in proton conductivity and the battery electrolyte and so on.

Original languageEnglish
Pages (from-to)279-285
Number of pages7
JournalGongneng Cailiao yu Qijian Xuebao/Journal of Functional Materials and Devices
Volume17
Issue number3
StatePublished - Jun 2011

Keywords

  • 3-(trihydroxysilyl)-1-propane-sulfonic acid
  • Conductivity
  • Polyoxyethylene octadecylamine
  • SiO nanoparticles
  • Solvent-free nanofluids

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