Synthesis of nanotubes under carbon environment at low temperature using hydrothermal method

Carbon nanotubes (CNTs) are new birth in nanotechnology which becomes a pillar for scientific research due to its vast application in the feild of spintronics, optical and optoelectronics materials. In the present days, CNT are highly synthesized by various popular methods which are carried out under high temperature. So, here in present work CNTs are synthesised by low temperature at 160 °C with familiar hydrothermal method using precursors as Ethanol, Polyethylene Glycol (PEG) and Sodium hydroxide with reaction time of 20 h. Here nanotubes are formed by decomposition of PEG using activating agent NaOH which enhances the decomposition of PEG. From X-ray diffraction (XRD) crystalline nature, crystal structure, average nanotube size, dislocation density are found out. And also, by Williamson hall plot strain is calculated. The presence of different functional groups and the metallic transmittance are confirmed by Fourier Transform Infra Red (FTIR) spectrum. The destination point of absorbance is found out by Ultra-Violet Visible (UV-vis) spectral analysis. And also by Tauc plot direct and indirect band gap are calculated. CNTs are readily emits green radiations which confirmed by Photoluminescence (PL) spectrum. The morphological surveys are done using Scanning Electron Microscope (SEM).