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E. Fazio,E. Piperopoulos,S.H. Abdul Rahim,M. Lanza,G. Faggio,G. Mondio,F. Neri,A.M. Mezzasalma,C. Milone,S. Santangelo 한국물리학회 2013 Current Applied Physics Vol.13 No.4
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 highresolution transmission electron microscopy, X-ray photoemission, reflection electron energy loss and micro-Raman spectroscopy. Chemical composition, mass density, bonding configurations and threefoldto 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/sp3carbon bonding fraction and greater amount of oxygen containing functional groups