| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-무기재료 |
| 제목 |
Facile Solution Synthesis of Colloidal CeO2 Quantum-dots for Enhanced Photoelectrochemical and Electrochemical Anti-corrosion Performances |
| 초록 |
This study reports a facile solution synthesis of colloidal CeO2 quantum dots (QDs) to improve the photoelectrochemical performance of BiVO4 (BVO) photoanode for solar water-splitting. Highly crystalline CeO2 QDs with an average size of ~3 nm were synthesized by reacting Ce3+ solution with citric acid at 50 oC. The QD solution was directly applied to BVO photoanode synthesized by a chemical bath deposition method. Interestingly, the CeO2/BVO photoanode exhibited an enhanced photocurrent density of 2.1 mA/cm2 at 1.23 V vs. RHE (0.5 M PBS, under one sun illumination), which is three times higher than pristine BVO (~0.6 mA/cm2). The photocurrent density was further increased to ~4 mA/cm2 by depositing CoOx electrocatalyst. Additionally, the QD solution was applied to AZ31B magnesium alloy to investigate its corrosion inhibition behavior. We found that the corrosion resistance of CeO2/AZ31B increases by surface passivation, thus reducing corrosion extent greatly. |
| 저자 |
서동현, A. Sivanantham, T. S. Shridharan, Qu Li, 조인선
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| 소속 |
아주대 |
| 키워드 |
Colloidal CeO2; BiVO4; Photoelectrochemical water splitting; AZ31B; Anti- corrosion coating
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| E-Mail |
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