The synthesis and coating process of TiO2 nanoparticles using CVD process

Heejin Lee, Min Young Song, Jongsoo Jurng, Young Kwon Park

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83 Scopus citations


A chemical vapor deposition (CVD) process with T-junction apparatus was used to coat a TiO2 photocatalyst onto a glass bead. The amount of coating was controlled using the coating time. The coated bead catalysts were characterized using various techniques, such as scanning electron microscopy, Brunauer-Emmett-Teller, X-ray diffraction and X-ray photoelectron spectroscopy. The CVD technique was compared with the dip coating method using the commercial catalyst, P-25. The CVD-coated bead had a comparatively uniform and regular surface, while the dip-coated bead showed a partly un-coated surface. Additionally, the catalytic activity was investigated using the TiO2 coated beads as the photocatalyst in the decomposition of acetaldehyde. The result showed that a 60-min sample coating time gave the best photocatalytic activity.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalPowder Technology
Issue number1
StatePublished - 25 Nov 2011


  • Acetaldehyde
  • CVD coating
  • T-junction apparatus
  • TiO


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