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.

Abstract
 1. 서 론
 2. 재료 및 방법
 3. 결과 및 고찰
  3.1. TiO2 나노입자의 특성
  3.2. TiO2 나노입자의 광촉매 특성
 4. 결 론
 참 고 문 헌

• 이명훈(한국환경공단 대기관리처 총량정책지원팀) | Myunghwoon Lee (Department of AirPollution Management, Korea Environment corporation)
• 김민수(한국과학기술연구원 환경본부) | Minsu Kim (Environment Division, KIST)
• 정종수(한국과학기술연구원 환경본부) | Jongsoo Jurng (Environment Division, KIST) Corresponding Author
• 진성민(한국과학기술연구원 환경본부) | Sungmin Chin (Environment Division, KIST)
• 박은석(한국과학기술연구원 환경본부) | Eunseuk Park (Environment Division, KIST)
• 이교우(전북대학교 기계설계공학부) | Gyowoo Lee (Division of Mechanical Design Engineering, Chonbuk National University)