| 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 SiO x hole transport channel on Ti-ZnFe 2 O 4 /SiO x /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 SiO x -modified Ti-ZnFe 2 O 4 (Ti-ZFO/SiO x ) nanocorals array, an advanced photoelectrode material that conjugates the in-situ Ti-doped ZnFe 2 O 4 nanocorals and the second-order SiO x hole transport channel layer via combining the hydrothermal and microwave methods. The in-situ Ti doping in ZnFe 2 O 4 (Ti-ZFO) and the microwave-assisted SiO x hole transport channel yield improved hole transfer to the coupled oxidation co-catalyst (Co-Pi) in Ti-ZFO/SiO x /CoPi photoanode. Compared to Ti-ZFO, 1.6 times enhancement in photocurrent density (0.570 mA/cm2) was achieved for the Ti-ZFO/SiO x /CoPi photoanode at 1.23 V RHE . Owing to the synergistic effect of the Ti doping and SiO x hole transport channel in the optimized Ti-ZnFe 2 O 4 /SiO x /CoPi nanocorals electrode, 70 and 34 µmol H 2 and O 2 , 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 Periyasamy 1 , Mahadik Mahadeo Abasaheb 1 , 황준범 1 , 김사랑 2 , 채원식 3 , 이현휘 4 , 최선희 4 , 장점석 1 |
| 소속 | 1 전북대, 2 울산과학기술원, 3 한국기초과학지원(연), 4 포항공과대 |
| 키워드 | 표면개질 ; 나노소재 ; 전기화학 |
| 원문파일 | 초록 보기 |
