화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.16, No.2, 187-193, April, 2005
Export Citation
졸-겔 방법으로 제조한 TiO2박막 광촉매의 물성 분석과 광화학 반응
Photochemical Reaction and Characterization of TiO2 Thin Film Photocatalyst Fabricated by Sol-Gel Method
임희섭, 이용희†, 손종윤, 유윤식, 이동환, 성대동1
  • 동의대학교 기초과학연구소 및 물리과, 화학과
  • 1동아대학교 화학과
Hee-Sup Lim, Yong-Hee Lee†, Jong-Yun Son, Yun-Sik Yu, Dong-Hwan Lee, and Dae-Dong Sung1
  • Research Institute of Basic Sciences and Department of Physics, Department of Chemistry, Dongeui University, Busan 614-714, Korea
  • 1Department of Chemistry, Donga University, Busan 604-714, Korea
E-mail:
초록
광촉매 TiO2박막은 titanium (IV) isopropoxide, 에탄올, HCI을 일정한 비율로 졸-겔방법에 의해 제작하였다. SEM에 의한 표면관찰에서는 500 ℃에서 5회 반복해서 코팅하여 제작한 것이 우수했다. EDX에 의한 성분비는 spin코팅이 O : Ti의 atom%가 61 : 39로 dip코팅보다 우수했다. 그리고 박막제작의 온도에 따라서 anatase상에서 rutile상으로 결정구조가 변화되어 가는 것을 XRD측정으로 알았다. 제작한 TiO2박막에 UV빔을 조사해서 얻은 TOC의 광분해효율이 1 h 이내에 20~65%를 나타내었고, 그 이후에는 서서히 감소하는 것을 확인했다.
The photocatalyst TiO2 thin film was made from titanium (IV) isopropoxide, ethanol, and HCI by sol-gel method. The surface observation by SEM showed the sample that was coated 5 times at 500 ℃ had good properties. The component ratio, in atom% of O : Ti by EDX analysis, of 61 : 39 by spin coating was superior than dip coating. It was found that crystal structure changed from anatase phase to rutile phase as a function of the temperature of thin film fabrication, and this was measured by XRD. The photolysis efficiency of total organic compounds (TOC) by lighting UV beam on TiO2 thin film showed 20%~65% within 1 h, and decreased slowly thereafter.
Keywords:sol-gel method;TiO2 thin film;photodegradation;UV beam;total organic compounds (TOC)
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