Zn-doped hematite modified by graphene-like WS2: A p-type semiconductor hybrid photocathode for water splitting to produce hydrogen
| Autor: | Cheng Lu, Aijuan Liu, Ping Yang, Yukou Du, Kezhen Li, Jie Huang, Dongmei Chu, Chunyong Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Photocathode law.invention law Nanocomposite Renewable Energy Sustainability and the Environment Graphene Hematite 021001 nanoscience & nanotechnology Condensed Matter Physics Acceptor 0104 chemical sciences Fuel Technology chemistry visual_art visual_art.visual_art_medium Photocatalysis Water splitting 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 43:7307-7316 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2018.02.152 |
| Popis: | A p-type Zn-doped hematite (α-Fe2O3(Zn)) in spindle-shape with an acceptor density of ca. 4.21 × 1018 cm−3 were synthesized by a facile hydrothermal method. After α-Fe2O3(Zn) was modified with graphene-like WS2 (α-Fe2O3(Zn)/WS2), the photoelectrochemical performances of the composite can be further enhanced. A photocell composed of the p-type α-Fe2O3(Zn)/WS2 nanocomposite as photocathode and n-type α-Fe2O3 as photoanode was assembled to estimate the photocatalytic activity of α-Fe2O3(Zn)/WS2. The amount of the hydrogen and oxygen produced from this tandem cell with the optimal electrodes under 2 h simulated solar light irradiation is 12.5 μmol and 4.3 μmol, respectively. |
| Databáze: | OpenAIRE |
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