| 학회 |
한국재료학회 |
| 학술대회 |
2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 |
22권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Reduced Graphene Oxide Quantum Dots Sensitized TiO2 Photo-electrode for Hydrogen Evolution via Solar Water Splitting |
| 초록 |
The environment over the world has been continuously contaminated because of green house gases such a byproduct of fossil fuel. CO2 gas by combustion of fossil fuels exists either in atmosphere or in sea water. The temperature of earth may be more increased when the solubility of CO2 gas in sea water has been saturated. Therefore alternative carbon free energy is significantly required for future. The hydrogen energy is promising candidate for carbon free energy. It has high energy density without carbon products after generating of energy. Conventional hydrogen evolution methods are steam reforming with metal catalysts and electrolysis of water. However, Hydrogen evolution process from reforming produces CO2 gas. Also CO2 gas is produced by electrical power generation for the electrolysis. Resulting of these problems has led that new evolution method using solar energy for hydrogen. Photo-catalytic water splitting for hydrogen evolution technique has been much attracted from early 1970 to until now. For this technique photo-catalyst used should have a narrow band gap for absorption of ultraviolet/visible/infrared region and photo-electrochemical stability to be an efficient system. The band gap of quantum dots can be tuned by changing sizes. But reported quantum dot materials are usually chalcogenide compounds that have undergone photo-corrosion. In this study, We have studied stable reduced graphene oxide quantum dots sensitized TiO2 photo-electrode for hydrogen evolution via water splitting. |
| 저자 |
김현, 양비룡
|
| 소속 |
금오공과대 |
| 키워드 |
Reduced Graphene Oxide; Quantum Dots; TiO2; Hydrogen; Solar Water Splitting
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| E-Mail |
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