Correlation between carbon nanotube microstructure and their catalytic efficiency towards the p-coumaric acid degradation |
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| Authors: | E Fazio E Piperopoulos SH Abdul Rahim M Lanza G Faggio G Mondio F Neri AM Mezzasalma C Milone S Santangelo |
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| Institution: | 1. Dept. of Physics and of Earth Sciences, Messina University, Italy;2. Dept. of Electronic Engineering, Chemistry and Industrial Engineering, Messina University, Italy;3. CNR, Institute for Chemical-Physics Processes, Messina Section, Italy;4. Dept. of Information Engineering, Infrastructure and Sustainable Energy, “Mediterranea” University, Reggio Calabria, Italy;5. Dept. of Civil Engineering, Energy, Environment and Materials, “Mediterranea” University, Reggio Calabria, Italy |
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| Abstract: | Pristine and annealed multi-walled C nanotubes are preliminarily tested as catalysts towards the degradation of p-coumaric acid with better performances than the widely used activated carbon. In order to clarify the origin of their different catalytic efficiency, the samples are analysed by means of high-resolution transmission electron microscopy, X-ray photoemission, reflection electron energy loss and micro-Raman spectroscopy. Chemical composition, mass density, bonding configurations and threefold- to fourfold-coordinated carbon bonding ratios are determined. The comparative discussion of the results obtained leads to attribute the higher catalytic activity of the pristine nanotubes to their larger sp2/sp3 carbon bonding fraction and greater amount of oxygen containing functional groups. |
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