| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1410 |
| 발표분야 |
공업화학 |
| 제목 |
Effect of in-situ Ti doping and SiOx hole transport channel on Ti-ZnFe2O4/SiOx/CoPi nanocoral array photoanode for efficient photoelectrochemical water splitting |
| 초록 |
Photoelectrochemical (PEC) water splitting efficiency is limited by the high overpotential, severe recombination of photogenerated charges in bulk, and surface of the photoanodes. In this study, we propose the SiOx-modified Ti-ZnFe2O4 (Ti-ZFO/SiOx) nanocorals array, an advanced photoelectrode material that conjugates the in-situ Ti-doped ZnFe2O4 nanocorals and the second-order SiOx hole transport channel layer via combining the hydrothermal and microwave methods. The in-situ Ti doping in ZnFe2O4 (Ti-ZFO) and the microwave-assisted SiOx hole transport channel yield improved hole transfer to the coupled oxidation co-catalyst (Co-Pi) in Ti-ZFO/SiOx/CoPi photoanode. Compared to Ti-ZFO, 1.6 times enhancement in photocurrent density (0.570 mA/cm2) was achieved for the Ti-ZFO/SiOx/CoPi photoanode at 1.23 VRHE. Owing to the synergistic effect of the Ti doping and SiOx hole transport channel in the optimized Ti-ZnFe2O4/SiOx/CoPi nanocorals electrode, 70 and 34 µmol H2 and O2, respectively, were evolved during 10 h PEC water splitting. Therefore, our work is the foundational pilot for constructing the hole transport channel between photoanode and electrolyte via the microwave method. |
| 저자 |
Anushkkaran Periyasamy1, Mahadik Mahadeo Abasaheb1, 황준범1, 김사랑2, 채원식3, 이현휘4, 최선희4, 장점석1
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| 소속 |
1전북대, 2울산과학기술원, 3한국기초과학지원(연), 4포항공과대 |
| 키워드 |
표면개질; 나노소재; 전기화학
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| E-Mail |
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| 원문파일 |
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