| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 |
27권 1호, p.561 |
| 발표분야 |
에너지 환경 |
| 제목 |
Polyphenol-Derived Stable Nanocarbon Layers to Improve Charge Separation, Hole Storage, and Catalytic Activity in Water Oxidation |
| 초록 |
Solar water oxidation has regarded as a practically important reaction to enhance the production of green hydrogen in solar water splitting, and modification of photocatalysts with various nanocarbons have been studied to improve intrinsic limitation of semiconductor photocatalysts. However, carbon materials have been rarely utilized in the modification of photoelectrodes due to the difficulty of formation of uniform nanocarbon layers on semiconductor photoelectrode with high efficiency and stability in water oxidation. In this study, we report polyphenol-derived N-doped graphene quantum dots (N-TAGQDs) from tannic acid and form ultrathin nanocarbon layers on a BiVO4 photoanode with Co2+ ions (BiVO4/Co/N-TAGQD) by a simple dipping method. A series of (photo)electrochemical analyses suggest the improved performance of BiVO4/Co/N-TAGQD resulted from the synergistic effect between N-doped graphitized tannic acid and the presence of phenolic groups to impart multifunctional roles of improving charge transfer and separation efficiency. We believe that this simple method provides novel approach for design of versatile nanocarbon materials to water-oxidation photoanodes. |
| 저자 |
배상현, 최유리, 류정기
|
| 소속 |
울산과학기술원 |
| 키워드 |
에너지; 환경
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
