| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.2139 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Enhancement of Efficiency of Photocatalytic water Oxidation via Metal-Oxide Sensitizer synthesized on TiO2 |
| 초록 |
We prepared water oxidation catalysts under visible light by using modified TiO2(P25). TiO2(P25) was modified by synthesizing metal-oxide via photochemical reduction in order to have highly photocatalytic activity under visible light irradiation. Metal-oxide sensitizing the Titanium Oxide was shown the extended absorption to visible light and was highly enhancing photoactive catalysts as water oxidation at water splitting system. We could control absorption of visible range through various FeOxide sensitizer having different oxidation number of Iron. Also, we simply synthesized various FeOxide sensitizer on TiO2(P25) through changing solution condition in photochemical reduction method. TiO2/FeOxide powder out of various metal-oxide sensitizers, which was synthesized in condition of phosphate buffer, had highly enhancing photoactivity about water oxidation.We studied properties of TiO2/FeOxide powder with DR UV-vis spectra and XRD and XPS and TEM image (EDS). The oxygen evolution rate of TiO2/FeOxide was 0.181 cc/min (7.41mol/min.) under visible light in buffer solution of pH 5.4. |
| 저자 |
김창호, 우성일, 김진수
|
| 소속 |
카이스트 생명화학공학과 |
| 키워드 |
Artificial Photosynthesis; Photocatalytic water Oxidation
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
