| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터) |
| 권호 |
23권 2호, p.2349 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Effect of Hydrothermal Reaction on the Hematite Nanostructure for Solar Water Oxidation |
| 초록 |
α-Fe2O3 was synthesized by controlling the hydrothermal growth time. Growth of the nanostructure perpendicular to the FTO substrates has been elucidated from a comprehensive analysis of the shape and morphology of α-Fe2O3 nanorods. FE-SEM results reveal that at lower hydrothermal time, the initial nucleation involves the formation of short and thin β-FeOOH nanorods. The subsequent increase in hydrothermal time leads β-FeOOH to form thicker and longer nanorods. However, HTQ causes the conversion of akaganeite to hematite phase, and activation of hematite by Sn4+ diffusion from FTO substrate. Sn4+ diffusion from FTO substrate to the hematite nanostructure was elaborated by XPS. The α-Fe2O3 nanorod photoanode prepared by hydrothermal reaction for 3 h and HTQ exhibits the highest photocurrent density at ca. 1.04 mA.cm-2. The results confirmed that the controlled growth of the β-FeOOH nanorod, as well as Sn4+ diffusion, played a key role in charge transfer during the photoelectrochemical application |
| 저자 |
박진우1, Arunprabaharan Subramanian1, Mahadeo A. Mahadik1, Su Young Lee2, Sun Hee Choi2, 장점석1
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| 소속 |
1전북대, 2포항가속기(연) |
| 키워드 |
촉매 및 반응공학 |
| E-Mail |
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| 원문파일 |
초록 보기 |
