Promising cobalt oxide and cobalt oxide/silver photocathodes for photoelectrochemical water splitting
| Autor: | Zhifeng Liu, Tiantian Hong, Chonghao Ma, Lu Yan, Keying Guo, Qijun Cai |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Photocurrent
Materials science Renewable Energy Sustainability and the Environment Inorganic chemistry Nanowire Ag nanoparticles 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Chemical engineering Electrode Water splitting 0210 nano-technology Cobalt oxide Enhanced absorption |
| Zdroj: | Solar Energy Materials and Solar Cells. 161:46-51 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2016.11.026 |
| Popis: | In this paper, novel promising photoelectrochemical electrodes of CoO nanowires and cocatalyst (Ag) modified CoO nanowires are prepared and studied in photoelectrochemical water splitting exhibiting an efficient photoelectrochemical activity for the first time. Detailed growth mechanisms for CoO nanowires and CoO/Ag nanowires are discussed. The effect of Ag is investigated. The enhanced absorption spectrum and photoelectrochemical performance are characterized. The photocurrent density of CoO/Ag nanowires reaches −1.10 mA cm −2 due to a high efficiency of light-harvesting, the high holes mobility via the direct pathways and increased interfacial electrons transfer of Ag nanoparticles. Such CoO-based catalysts may lead to effective photoelectrochemical activity and can be promising building blocks in photoelectrochemical water splitting systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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