| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.753 |
| 발표분야 |
에너지 환경 |
| 제목 |
Insights into Hydrothermal Reaction Time on the Performance of Hematite Nanostructures for Solar Water Oxidation |
| 초록 |
Hematite nanostructures were prepared by hydrothermal synthesis is well controlled by various factors like precursor concentration, temperature and time. In this paper, particular interest was given to hydrothermal reaction time on the photoelectrochemical (PEC) behavior of the hematite photoanode. Highest photocurrent density of 1.04 mA/cm2 at 1.23 V vs RHE recorded for photoanode prepared by 3 h hydrothermal reaction time. Growth of the nanostructure perpendicular to the FTO (F:SnO2) substrates was confirmed X-ray diffraction (XRD). Field emission scanning electron microscopy (FE-SEM) reveals that presence of nanorods on the FTO substrate, when the hydrothermal time increases above optimum it starts to form aggregated nanorods on parent nanorods. Sn diffusion on the hematite photoanodes were elaborately studied by X-ray photoelectron spectroscopy (XPS). .Charge transfer resistance and double layer capacitance of the photoanodes was studied by impedance measurements. Donor density and flatband potential of the photoanodes were calculated by Mott-Schottky analysis. |
| 저자 |
박진우, 장점석, Arunprabaharan Subramanian
|
| 소속 |
전북대 |
| 키워드 |
에너지전환 |
| E-Mail |
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| 원문파일 |
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