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가역적 산화-환원 매개체를 이용한 Pt- and Ir-TiO₂ 박막에서 물분해에 의한 수소제조
남우석(Nam Wooseok),한귀영(Han Gui Young) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
Photocatalytic decomposition of water in alkaline solution was investigated using Pt- or Ir-TiO₂ as photocatalyst and iodine ion as a redox mediator. Hydrogen evolved over Pt-loaded semiconductor photocatalysts and oyxgen was evolved by Ir-TiO₂ thin film. We found that there are existed the optimum pH condition and redox mediator concentration on water splitting. Photocatalytic layer was prepared by sol-gel method on the bottom of the reactor. The results showed that water splitting depends on the concentration of alkaline solution, redox mediator concentration and amounts of Ir loading.
김기만(Kim KiMan),남우석(Nam WooSeok),한귀영(Han GuiYoung),서태범(Seo TaeBeom),강용혁(Kang YongHeack) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
Steam reforming of methane using Xe-arc solar simulator was studied for converting solar radiation into energy foam that one can readily utilize. The Xe-arc lamp produce a spectrum similar to that of the sun. Ni-Cr metal foam, resist high temp.(>900℃), is used to catalytically active foam absorber, and to support of reforming catalyst.. The catalyst on the surface of foam were directly irradiated with solar simulated xe-light in order to carry out the steam reforming of methane. The reactor was made of stainless steel and quartz window was located on a place of the xe-light irradiation and temperature was controlled using K-type thermocouple in contact with catalyst located inside the reactor. The result show that a possibility of solar reforming using catalytically active foam absorber is exist.
김기만(Kim KiMan),남우석(Nam WooSeok),한귀영(Han GuiYoung),서태범(Seo TaeBeom),강용혁(Kang YongHeack) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-
Steam reforming of methane using Xe-arc solar simulator was studied for converting solar radiation into energy foam that one can readily utilize. The Xe-arc lamp produce a spectrum similar to that of the sun. SiC ceramic foam, resist high temp. (>900℃), is used to catalytically active foam absorber, and to support of reforming catalyst.. The catalyst on the surface of foam were directly irradiated with solar simulated xe-light in order to carry out the steam reforming of methane. The reactor was made of stainless steel and quartz window was located on a place of the xe-Iight irradiation and temperature was controlled using K-type thermocouple in contact with catalyst located inside the reactor. The result show that a possibility of solar reforming using catalytically active foam absorber is exist.