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Solvothermal method에 의한 Al/TiO2, V/TiO2, Al-V/TiO2 나노 필름 제조 및 친수 성능 평가
홍원종,강미숙 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.2
Recently, the TiO2 application has attracted a good deal of attention on purification and treatment of water and air, which are concerned in the protection of the environment. In particular, the TiO2 nano-sized powder has been widely used not only for their high photocatalytic activity but also for their photo-induced super-hydrophilic properties. In our previous study, we could also find that transition metals (Me3+ or Me5+) incorporated TiO2 anatase framework generated bronsted acid sites, which could be more draw water molecules, in particular, for Al and V. However, it was also revealed that the nanometer powder film fixed by a binder was easily detached from the supports in strong acidic or basic liquid phases. Therefore, this study introduces a solvothermal method to synthesize the colloidal solutions having the nano-sized AlxTi1-xOy, VxTi1-xOy, and AlxVyTi1-(x+y)Oz particles. The colloidal solutions are directly coated on supports without any binders. In addition, we have tried to find out the relationship between their physical properties and their super-hydrophilic property. 본 연구는 한국과학재단 젊은과학자연구활동지원과제(과제번호 R08-2003-000-10434-0)에 의해 수행되었으며 이에 감사를 드립니다.
Bi/V bimetal 함유 티타니아 나노입자의 제조 및 친수성능 평가
강미숙,홍원종,이미해,정석진 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1
Recently, the TiO2 application has attracted a good deal of attention on purification and treatment of water and air, which are concerned in the protection of the environment.In particular, the TiO2 nanosizedpowder has been widely used not only for their high photo-catalytic activity but also for their photo-induced super-hydrophilic properties. In particular, the photo-catalytic activity of metal/Ti binary oxides were enhanced compared to pure Ti oxide in many literatures. In our previous study, we could also find that transition metals (Me3+ or Me5+) incorporated TiO2 anatase framework generated brfnsted acid sites, which could be more draw water molecules. The nano-sized metaloxides, BixTi1-xOy, VxTi1-xOy, and BixVyTi1-(x+y)Oz are prepared by solvothermal method in this study. In addition, we have tried to find out the relationship between their physical properties and photocatalytic activity, particularly super-hydrophilic property. This study was supported by Korea Science and Engineering Foundation (R08-2003-000-10434- 0). The authors are grateful for financial support.