Fe2O3 nanorods/CuO nanoparticles p-n heterojunction photoanode: Effective charge separation and enhanced photoelectrochemical properties
| Autor: | Xiaohang Zong, Ran Tao, Linli Li, Xiaoxing Fan, Hao Sun, Qian Wang, Jingyi Ma |
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| Rok vydání: | 2021 |
| Předmět: |
Photocurrent
Materials science Composite number Heterojunction 02 engineering and technology Hematite 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Effective nuclear charge 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Chemical engineering visual_art visual_art.visual_art_medium Water splitting Nanorod 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Journal of Colloid and Interface Science. 602:32-42 |
| ISSN: | 0021-9797 |
| Popis: | Fe2O3/CuO p-n heterojunction photoelectrode films were fabricated by growing CuO nanoparticles on Fe2O3 nanorods via an impregnation method. The content of CuO in Fe2O3/CuO films was changed to study the role of CuO on the p-n heterojunction. The obtained Fe2O3/CuO photoelectrodes exhibited high intensity of visible-light absorption and excellence photoelectrochemical (PEC) performance. The incident photocurrent efficiency (IPCE) of Fe2O3/CuO photoanode reached 11.4% under 365 nm light irradiation, which is 2.6 times higher than that of bare Fe2O3 photoanode. In a PEC water splitting reaction, the H2 and O2 production rates for Fe2O3/CuO-3 were 0.294 and 0.130 µmol/min. The enhanced PEC performance was mainly contributed by the enhanced charge separation and the synergism achieved in Fe2O3/CuO p-n heterojunctions. This work could provide a new route to construct efficient Fe2O3-based composite photoelectrodes for the PEC. |
| Databáze: | OpenAIRE |
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