Nemeth, K.Szekeres, G. P.Fejes, D.Reti, B.Seo, J. W.Forro, L.Hernadi, K.2021-03-262021-03-262021-03-262021-04-0110.1166/jnn.2021.18965https://infoscience.epfl.ch/handle/20.500.14299/176550WOS:000613925400037Nitrogen doped multi-walled carbon nanotubes and other carbon nanoparticles were synthesized by catalytic chemical vapor deposition of tripropylamine and acetylene on CaCO3-supported cobalt catalyst (5 wt%), prepared by impregnation, and various precursors. Each synthesis was performed by using either the pure nitrogenous organic compound or its mixture with acetone. Transmission electron microscopy studies revealed a significant difference both in the yield and the diversity of the carbon deposits. Every synthesis resulted in bamboo-like nanotubes, and nearly all of them also in onion-like structures. Electron energy loss spectroscopy studies of the samples indicated the presence of nitrogen and calcium (caused by the catalyst support). High-resolution transmission electron microscopy and X-ray diffraction measurements were also performed to characterize the samples.Chemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed MatterChemistryScience & Technology - Other TopicsMaterials SciencePhysicsn-doped carbon nanotubestembamboo-structurexrdeelsoxygen reduction reactioncvd synthesisnano-onionsnanotubesfunctionalizationnanofibersgrowthtext::journal::journal article::research article