| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 봄 (04/24 ~ 04/26, 제주국제컨벤션센터) |
| 권호 |
25권 1호, p.528 |
| 발표분야 |
에너지 환경(Energy and Environment) |
| 제목 |
Synthesis and Characterization of Mn2V2O7 inverse opal structures for Photoelectrochemical Water Oxidation |
| 초록 |
Photoelectrochemical (PEC) water splitting is one of the effective process to convert the abundant solar energy to Hydrogen chemical energy to meet upraising energy crisis. For scalability the process must be free from precious and toxic materials with significant efficiency to support the energy demand globally. We have prepared non-toxic and earth abundant manganese vanadate (Mn2V2O7) inverse opal structures through self-assembled colloidal polystyrene (PS) spheres with a diameter of 200 nm for PEC water oxidation. The well controlled wall thickness of manganese vanadate with higher surface area provides enough light absorbance and efficient charge transport path. The photocurrent was evaluated under 1 sun illumination which showed a photocurrent of 0.2 mA/cm2 at 1.23 V vs a reversible hydrogen electrode (RHE). The photocurrent onset found to be 0.2 VRHE with a TiO2 passivation layer coated by Atomic Layer Deposition (ALD). The low photocurrent attributed to the electron-hole recombination loss originates from low electronic conductivity and charge separation efficiency. |
| 저자 |
Seenivasan Selvaraj, 김도형, 문 희
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| 소속 |
전남대 |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
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