Characteristics and Photocatalytic Properties of TiO2 Nanoparticles Synthesized by Thermal Decomposition Process

Title
Characteristics and Photocatalytic Properties of TiO2 Nanoparticles Synthesized by Thermal Decomposition Process
Authors
이명훈김민수정종수진성민박은석이교우
Keywords
Thermal decomposition; TiO2; Methylene blue
Issue Date
2010-05
Publisher
한국환경과학회지
Citation
VOL 19, NO 5, 577-584
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/39313
ISSN
1225-4517
Appears in Collections:
KIST Publication > Article
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