| 학회 | 한국공업화학회 |
| 학술대회 | 2014년 가을 (11/12 ~ 11/14, 엑스코(대구)) |
| 권호 | 18권 2호 |
| 발표분야 | 에너지저장변환-포스터 |
| 제목 | Cu2ZnSnS4 (CZTS) nanocrystal/TiO2 composites for efficient photocatalytic reduction of CO2 |
| 초록 | CO2 emission is one of the biggest problem causing global warming. A variety of approaches for addressing CO2 emission is currently under research. Photocatalyst is one of the effective strategies to solve this issue. TiO2-based materials are the most stable and preferred photocatalysts. But the UV light responsivity of TiO2 owing to its large 3.2 eV bandgap and the fast recombination of photoexcited electrons and holes restrict the improvement of solar energy conversion efficiency. The band alignment between Cu2ZnSnS4 (CZTS) nanocrystal and TiO2 favors charge separation across the interface. In this work, an attempt was done to fabricate hybrid photocatalyst based upon p-n heterojunction and applied for CO2 photoreduction. CZTS, a well-known p-type semiconductor with a narrower direct band gap of 1.5eV, was synthesized and coupled with n-type TiO2. The synthesis of hybrid photocatalyts was confirmed by numerous characterization techniques such as XRD, TEM, UV-Vis spectroscopy and production of methane. |
| 저자 | 김기돈, 인수일 |
| 소속 | 대구경북과학기술원(DGIST) |
| 키워드 | CO2 emission; Cu2ZnSnS4; TiO2; CO2 reduction; production of methane |
