| 학회 |
한국공업화학회 |
| 학술대회 |
2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
26권 1호 |
| 발표분야 |
포스터-환경·에너지 |
| 제목 |
Sustained, photocatalytic Carbon dioxide reduction to methane in a continuous flow reactor by earth-abundant materials: Reduced titania-Cu2O Z-scheme heterostructures |
| 초록 |
Photocatalytic conversion of CO2 is promising approach for solar energy while reducing greenhouse gas emissions but it still remain limited photocatalyst stability and relatively high cost have hampered practical application. In the present work, a unique strategy is adopted to synthesize a stable, and inexpensive photocatalyst comprised of earth-abundant materials: a reduced titania-Cu2O Z-scheme heterostructure. Under illumination for 6 h, the optimized reduced titania-Cu2O photocatalyst enables 0.13 % photoreduction of highly diluted CO2 with water vapors to 462nmol g−1 of CH4 while showing excellent stability over seven testing cycles (42 h). Our studies show the Z-scheme inhibits Cu2O photocorrosion, while its synergistic effects with reduced titania result in sustained CH4 formation in a continuous flow photoreactor. To the best of our knowledge stability exhibited by the reduced titania-Cu2O Z-scheme is the highest for any Cu-based photocatalyst. |
| 저자 |
김화평, Shahzad Ali, 인수일
|
| 소속 |
DGIST |
| 키워드 |
Photocatalysis; reduced titania; Copper oxide; Z-scheme heterostructure; CO2 reudction
|
| E-Mail |
|
