Characteristics and Photocatalytic Properties of TiO2 Nanoparticles Synthesized by Thermal Decomposition Process
- Characteristics and Photocatalytic Properties of TiO2 Nanoparticles Synthesized by Thermal Decomposition Process
- 이명훈; 김민수; 정종수; 진성민; 박은석; 이교우
- Thermal decomposition; TiO2; Methylene blue
- Issue Date
- VOL 19, NO 5, 577-584
- The generation of TiO2 nanoparticles by a thermal decomposition of titanium tetraisopropoxide (TTIP) was
carried out experimentally using a tubular electric furnace at various synthesis temperatures (700, 900, 1100 and
1300℃) and precursor heating temperatures (80, 95 and 110℃). Effects of degree of crystallinity, surface area and
anatase mass fraction of those TiO2 nanoparticles on photocatalytic properties such as decomposition of methylene
blue was investigated. Results show that the primary particle diameter obtained from thermal decomposition of
TTIP was considerably smaller than the commercial photocatalyst (Degussa, P25). Also, those specific surface
areas were more than 134.4 m2/g. Resultant TiO2 nanoparticles showed improved photocatalytic activity compared
with Deggusa P25. This is contributed to the higher degree of crystallinity, surface area and anatase mass fraction
of TiO2 nanoparticles compared with P25.
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