The synthesis and coating process of TiO2 nanoparticles using CVD process
- The synthesis and coating process of TiO2 nanoparticles using CVD process
- 이희진; 송민영; 정종수; 박영권
- nanoparticle; TiO2; CVD process; synthesis; coating; CVD coating; T-junction apparatus; Acetaldehyde
- Issue Date
- Powder technology
- VOL 214, NO 1, 64-68
- 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.
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