| 학회 | 한국화학공학회 |
| 학술대회 | 2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터) |
| 권호 | 23권 2호, p.1878 |
| 발표분야 | 에너지 환경 |
| 제목 | Photocatalytic Water Reduction on Copper Bismuth Oxide, a Promising Photocathode Material |
| 초록 | Copper Bismuth Oxide(CBO) is firstly reported in 2007 by Sayama group. The authors scanned various combinations of oxide material, and they got outstanding photocurrent density in copper bismuth oxide. Copper bismuth oxide is a p-type semiconductor material which has 1.8eV band gap and 19.7mA/cm2 of theoretical photocurrent density. The p-type Conductivity comes from the copper vacancy states near the valence band edge. CBO fulfills several requirements for the photoelectrochemical water splitting photocatalyst, 1) proper band gap (from 1.3eV to 1.8eV) 2) appropriate band alignment for hydrogen reduction. and 3) earth abundant and low cost of fabrication. But CBO has poor charge transfer activity, slow kinetics and photocorrosion caused by trapping of photoelectrons in the Cu 3d band. To overcome disadvantages, 1) optimizing the synthesis method, 2) usage of co-catalyst, and 3) protective layer is required. In this Experiment, various synthetic method were applied to get highly crystalline CBO film and high photocurrent density. |
| 저자 | 김지혜1, 이재성2 |
| 소속 | 1UNIST, 2울산과학기술원 |
| 키워드 | 에너지전환; 친환경 |
| 원문파일 | 초록 보기 |
