Nickel-induced transformation of diamond into graphite and carbon nanotubes and the electron field emission properties of resulting composite films
| Autor: | Hangyu Long, Zejun Deng, Jiaxin Li, Kechao Zhou, Yijia Wang, Yunlu Jiang, Bo Zhou, Cheng-Te Lin, Zhiming Yu, Naixiu Hu, Qiuping Wei, Li Ma |
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| Rok vydání: | 2018 |
| Předmět: |
congenital
hereditary and neonatal diseases and abnormalities Materials science Scanning electron microscope Material properties of diamond General Physics and Astronomy Nanotechnology 02 engineering and technology Carbon nanotube engineering.material 010402 general chemistry 01 natural sciences law.invention law hemic and lymphatic diseases parasitic diseases Graphite Diamond Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Field electron emission Carbon film Chemical engineering Transmission electron microscopy engineering 0210 nano-technology |
| Zdroj: | Applied Surface Science. 428:264-271 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.09.129 |
| Popis: | The metal-induced transformation of diamond into graphite and carbon nanotubes (CNTs) was achieved by catalytic deposition with nickel as the catalyst. The quality of catalytic products was assessed by scanning electron microscopy, Raman spectroscopy and transmission electron microscopy. Results showed that the catalytic process could be controlled by adjusting the carbonaceous concentration in the deposition atmosphere, and new information concerning the diamond/Ni/graphite multi-phase mixed interface between diamond and carbon nanotube has been analyzed. A model was put forward to elucidate the mechanism of catalytic etching and growth on the diamond surface. In addition, the resulting diamond/CNTs composite film (10% CH4) was found to exhibit the lowest turn-on field of 6.9 V/μm as well as good current emission stability compared to the other composite films. |
| Databáze: | OpenAIRE |
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