화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.19, No.6, 674-679, December, 2008
Export Citation
TiO2 담지 스테인리스 강 섬유 광촉매 제조 및 광촉매 활성 평가
Fabrication of TiO2 Impregnated Stainless Steel Fiber Photocatalyts and Evaluation of Photocatalytic Activity
송선정, 김경석, 김경환, 이휘지, 조동련, 김종범1, 박희주1, 손호경2, 김종호†
  • 전남대학교 응용화학공학부, BK21 기능성나노신화학소재사업단
  • 1(주)빛과환경 환경기술연구소
  • 2시드니공과대학교 환경공학부
Sun-Jung Song, Kyoung Seok Kim, Kyung Hwan Kim, Hui-Jie Li, Dong Lyun Cho, Jong Beom Kim1, Hee-Ju Park1, Hokyong Shon2, and Jong-Ho Kim†
  • Center for Functional Nano Fine Chemicals & School of Applied Chemical Engineering, Chonnam National University, Gwangju500-757, Korea
  • 1Photo & Environment Technology Co, Ltd., Gwangju 500-460, Korea
  • 2Faculty of Engineering, University of Technology, Sydney, P.O. Box 123, Broadway, Australia, Korea
E-mail:
초록
수처리에 있어서 분말 TiO2 광촉매가 안고 있는 문제점을 극복하기 위하여 스테인리스 강 섬유를 지지체로 한 TiO2 담지 광촉매(TiO2/SSF)를 제조하였다. 초음파 세척기를 이용하여 담지된 TiO2의 부착강도를 살펴보았으며, 메틸렌블루와 포름산 분해실험을 통하여 광촉매 활성을 평가하였고, 대장균과 비브리오균에 대한 살균실험을 통하여 살균능력을 평가하였다. 담지된 TiO2는 30 min간의 초음파 처리 후에도 95% 이상이 남아 있을 정도로 강한 부착력을 보였으며, UV 하에서 60%의 메틸렌블루와 38%의 포름산을 1 h 만에 각각 분해시키는 광촉매 활성을 보였고, 대장균과 비브리 오균에 대하여 99.9% 이상의 높은 살균능력을 보였다. 포름산 분해의 경우에는 산화제를 첨가하면 분해율이 증가하였으며, 특히 과산화수소를 첨가할 경우에는 분해율이 1 h 만에 80%로 증가하였다.
TiO2 impregnated stainless steel fiber photocatalysts (TiO2/SSF) were fabricated to overcome inherent problems of powdery TiO2 photocatalysts in water treatment. Adhesion strength of the impregnated TiO2 was examined using an ultrasonic-cleaner. Photocatalytic activity was evaluated through decomposition experiment of methylene blue and formic acid. Bactericidal efficiency was evaluated through sterilization experiment of E. Coli and Vibrio Vulnificus. Adhesion strength of the impregnated TiO2 was so high that more than 95% was left over even after the treatment in an ultrasonic-cleaner for 30 min. Methylene blue and formic acid were decomposed as much as 60% and 38% of the initial concentration and more than 99.9% of E. Coli and Vibrio Vulnificus were killed after 1 hour exposure to the prepared photocatalyst under UV irradiation. In the case of decomposition of formic acid, decomposition ratio increased if oxidants were added. Especially the decomposition ratio increased as high as 80% when hydrogen peroxide was added as an oxidant.
Keywords:water treatment;TiO2 photocatalyst supported on stainless steel fiber;photocatalytic efficiency
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