“…NCNSs, including NCNTs and barrel like curved lamellas, were recently fabricated via the pyrolysis of melamine in a direct current arc discharge [39]. Successful preparation of SWNCNTs by using the arc-discharge technique was also reported by Holzinger et al [40]. Laser ablation technique, known to be used for the fabrication of CNTs, was also rarely utilized in the production of NCNTs, e.g., vaporization of a C:Ni/Y The synthesis of NCNTs was frequently accomplished through the pyrolysis of acetonitrile (CH 3 CN) (Table 1) and its mixtures with various organic compounds (hydrocarbons, alcohols, and ethers) [48,53,54,78,79,89,[112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129][130] (Table 2 Tables 1 and 2).…”