| Autor: |
Chao-Mujica, Frank J., Darias-Gonzalez, Juan G., Garcia-Hernandez, Liudy, Torres-Figueredo, Neil, Paez-Rodriguez, Amira, Hernandez-Tabares, Lorenzo, Diaz-Gongora, J. A. I., Desdin-Garcia, Luis F. |
| Rok vydání: |
2017 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
Carbon nanoonions are novel carbon nanoestructures that have potential applications in fields like electronics and chemical catalysis. Here we report a very simple but effective method of purifying carbon nanoonions produced by submerged arc discharge in water based on the water-toluene liquid-liquid extraction. Purified and non-purified samples were characterized by atomic force microscopy, high resolution transmission electronic microscopy and Brunauer-Emmett-Teller gas adsorption isotherms method. Microscopy results showed a good purification and allowed the assessment of the particles diameter distribution. Specific surface area was measured showing a great increment from (14.7 +- 0.3) m2/g for the non-purified sample to (170 +- 3) m2/g for the purified sample. Average particles diameter was also assessed from the adsorption isotherms; the diameter values obtained by the three techniques were in good agreement being between 20 to 30 nm. |
| Databáze: |
arXiv |
| Externí odkaz: |
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