| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1852 |
| 발표분야 | 재료 (Materials) |
| 제목 | Core Position Control of CdSe/CdS Dot-in-Rod Hetero-structure for Efficient Photocatalytic Reaction |
| 초록 | Colloidal quantum-dot photocatalysts has attracted great attention for water splitting hydrogen generation because of their many advantages, such as size-dependent absorption properties, longer exciton lifetimes, possibility of generating multiple excitons by single photon, and enhanced photo-stability. Among them, CdSe/CdS dot-in-rod structure, which consists of CdSe spherical core in CdS rod, shows slow exciton recombination and highest hydrogen generation activity than core-shell CdSe/CdS hetero-structures. As overlap region of electron and hole probability wave function decreases, dot-in-rod structure shows slow recombination rate, enhanced charge separation rate, enhanced photo-stability. Also, different reactivity of various CdS facet enables co-catalyst amount control and therefore affects hydrogen evolution activity. In this work, we systematically investigate CdSe/CdS dot-in-rod core position dependent photocatalytic activity and design efficient structure of CdSe/CdS dot-in-rod structure for hydrogen evolution. By using different facet reactivity of wurtzite structure, we synthesized core position controlled CdSe/CdS dot-in-rod. |
| 저자 | 김귀민1, 이도창2 |
| 소속 | 1한국과학기술원, 2한국과학기술원 생명화학공학과 |
| 키워드 | 재료 |
| 원문파일 | 초록 보기 |
