Novel process of coating Al on graphene involving organic aluminum accompanying microstructure evolution
| Autor: | Peikang Bai, J.F. Gao, Zhanyong Zhao, R.G. Guan, Y.J. Li, Raja Devesh Kumar Misra, Zhanhu Guo, Hu Liu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Reducing agent chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences law.invention Coating Aluminium law Chemical reduction General Materials Science Graphene Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Decomposition 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Scientific method engineering 0210 nano-technology |
| Zdroj: | Materials Letters. 232:202-205 |
| ISSN: | 0167-577X |
| Popis: | A novel chemical reduction of organic aluminum for coating Al on the graphene surface is proposed. During the process, Al powder reacted with the (C2H5)2Br solution to produce (C2H5)3Al solution, followed by gradual decomposition of (C2H5)3Al into Al atoms. Al atoms gradually deposited on the surface of graphene, nucleated, grew up, until Al coating was formed on the surface of graphene. With the increase of reaction temperature, the decomposition rate of (C2H5)3Al increased, which was beneficial to the formation of Al atoms and Al coating. The reducing agent, NaH, promoted the reaction and formation of Al coating. When the reaction temperature was optimized to 100 °C, and the reaction time was 1.5 h, with NaH added to the solution, high quality Al-coated graphene was obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect