The synthesis of multi-walled carbon nanotubes (MWNTs) by catalytic pyrolysis of the phenol-formaldehyde resins |
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| Authors: | Ioan Stamatin Adina Morozan Anca Dumitru V Ciupina G Prodan J Niewolski H Figiel |
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| Institution: | a3 Nano-SAE Research Centre, University of Bucharest, MG-38, 077125 Bucharest-Magurele, Romania;bOvidius University of Constantza, Bd. Mamaia 124, Constantza, Romania;cDepartment of Solid State Physics, Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, 30-059 Krakow, Poland |
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| Abstract: | A series of carbon nanomaterials, particularly multi-walled carbon nanotubes (MWNT), are obtained as products from catalytic pyrolysis of the cross-linked phenol-formaldehyde resins with different ferrocene under inert atmosphere. The morphology and structure of the samples were evaluated by TEM and XRD techniques. CNTs morphology is dependent on the iron nanoparticles and their forms (Fe, Fe3C) resulted from ferrocene decomposition. The amount of nanotubes increases with iron content released from ferrocene catalyst during the pyrolysis process. Fe3C nanoparticles drive the nucleation and the growth of carbon nanotubes during the pyrolysis process. Long (up to microns) well-defined MWNTs with small defects, ropes and disordered carbon are representatives in the pyrolyzed resins composition. |
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| Keywords: | MWNTs Pyrolysis Ferrocene catalyst Spirostructures |
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