| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
무기재료 |
| 제목 |
Plasmon-Sensitized Graphene/TiO2 Inverse Opal Nanostructures with Enhanced Charge Collection Efficiency for Water Splitting |
| 초록 |
Photoelectrochemical (PEC) water splitting has emerged as a promising technology that allows the direct conversion of solar energy into chemical fuels. We developed TiO2 inverse opal based photoelectrodes for photoelectrochemical water splitting devices, in which Au nanoparticles and reduced graphene oxide have been incorporated. The hybrid nanostructure showed a photocurrent density of 1.29 mA cm−2 at 1.23 V vs RHE, uncovering a 2-fold enhancement compared to a pristine TiO2. The AuNPs were broadened the absorption of TiO2 into the visible range and to reduce the onset potential of photoelectrodes. TiO2@rGO@Au hybrid exhibited a 14-fold enhanced PEC efficiency under visible light and a 2.5-fold enrichment in the applied bias photon-to-current efficiency. IPCE measurements highlighted a synergetic effect between Au plasmon sensitization and rGO-mediated facile charge separation/transportation, which is believed to significantly enhance the PEC activity of these nanostructures. |
| 저자 |
Rami reddy boppella, 김동하
|
| 소속 |
이화여자대 |
| 키워드 |
Water splitting; surface plasmon; inverse opal; TiO2
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| E-Mail |
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