Two new kinds of nanodiamonds with the structure of controlled sp3/sp2 carbon ratio and carbon atom dimer by the cleavage plane mechanical stripping crush separation preparation technology
| Autor: | Yongqi Liu, Shao Jingru, Liuxi Guo, Jinzhong Yang, Shuxi Dai, Wu Yanqiang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Synthetic diamond Scanning electron microscope Nanoparticle 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences law.invention symbols.namesake law Magic angle spinning General Materials Science Physical and Theoretical Chemistry Nanodiamond Organic Chemistry Diamond 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics 0104 chemical sciences Chemical engineering Transmission electron microscopy engineering symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Fullerenes, Nanotubes and Carbon Nanostructures. 26:42-51 |
| ISSN: | 1536-4046 1536-383X |
| DOI: | 10.1080/1536383x.2017.1402005 |
| Popis: | Two new diamond nanostructures of nanoparticles and multilayer nanosheets were prepared through cleavage plane crush separation preparation technology by synthetic diamond as starting material. All samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectroscopy (Raman), and 13C Solid-state Magic Angle Spinning Nuclear Magnetic Resonance (MASNMR). The influence of precipitation time on the particle size, crystalline, morphology, structure of the nanostructures was investigated. The crystalline phase of the final products was determined as diamond phase. More importantly, the morphology of nanodiamond was closely related to the structure. Nanoparticles consisted of carbon atom dimer structure on the surface, while the multilayer nanosheets contained unsaturated sp2 hybridization carbon, and the unsaturated sp2 hybridization carbon contents increased with increasing particle size. Possible formation mechanisms of di... |
| Databáze: | OpenAIRE |
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