The control of particle size distribution for fabricated alumina nanoparticles using a thermophoretic separator

Byungkwon Kim, Jungho Song, Jeong Yeol Kim, Jungho Hwang, Dongho Park

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Control of the particle size distribution of fabricated alumina nanoparticles from general alumina powder with a large geometric standard deviation (GSD) was studied. A thermophoretic separator was used to control the GSD of the nanoparticles, and unevaporated and primary particles were separated to yield a small GSD. The fabricated nanoparticles were characterized by field emission scanning electron microscopy (FESEM) and a scanning mobility particle sizer (SMPS). We confirmed that the GSD of the nanoparticles was controlled by the thermophoretic separator. A temperature difference between 79 K and 151 K was applied to the thermophoretic separator for control of the nanoparticle GSD. The GSD of the fabricated alumina nanoparticles was improved from 1.74 to 1.44.

Original languageEnglish
Pages (from-to)2094-2100
Number of pages7
JournalAdvanced Powder Technology
Issue number10
Publication statusPublished - 2019 Oct


All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanics of Materials

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