| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1467 |
| 발표분야 |
공업화학 |
| 제목 |
Microwave-assisted surface attachment of Al ions on in-situ diluted titanium doped hematite photoanode for efficient photoelectrochemical water splitting |
| 초록 |
In this work, we introduce a new in-situ diluted (ISD) hydrothermal method for the synthesis of Ti-doped Fe2O3 and suggest a novel microwave-assisted surface attachment (MASA) method for fabricating Al/Ti co-doped photoanode. The charge carrier density of photoanode was increased with a Ti4+ doping which offers lower bulk resistance. Through, the use of MASA treatment, Al3+ ions were homogeneously attached to the surface of the Ti-FeOOH from an aqueous source of aluminum chloride. The photogenerated charge recombination was more weaken after successful diffusion of Al3+ and partially formation of the self-induced Al2O3 which act as surface passivation. The synergistic interaction of Al co-doping and surface passivation cathodically shifts the onset potential by 120 mV and enhances the photocurrent density to 1.32 mA/cm2 at 1.23 V vs. RHE. MASA technique not only improves bulk characteristics of the photoanode via Al-modification also enhances the surface charge injection efficiency which promotes excellent water splitting. This study suggests that using the in-situ diluted (ISD) hydrothermal method combined with the MASA technique, produces highly efficient hematite photoanodes. |
| 저자 |
황준범1, Love Kumar Dhandole1, Periyasamy Anushkkaran1, 채원식2, 최선희3, 장점석1
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| 소속 |
1전북대, 2한국기초과학(연), 3포항공과대 |
| 키워드 |
표면개질; 나노소재; 전기화학
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| E-Mail |
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| 원문파일 |
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