OICC Press International Journal of Nano Dimension 2228-5059 7 3 2024 02 28 Role of growth temperature in CVD synthesis of Carbon nanotubes from Ni-Co bimetallic catalysts 10.7508/ijnd.2016.03.007 EN Sepideh Sadat Madani Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran Karim Zare Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran Mahmood Ghoranneviss Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran Journal Article 2024 02 28 The effect of temperature variation on the growth of Carbon Nanotubes (CNTs) using Thermal Chemical Vapor Deposition (TCVD) is presented. Nickel and Cobalt (Ni-Co) thin films on Silicon (Si) substrates were used as catalysts in TCVD technique. Acetylene gas was used in CNTs growth process at the controlled temperature ranges from 850-1000 ̊ C. Catalysts and CNTs characterization was carried out using Atomic Force Microscopy (AFM), Energy Dispersive X-ray (EDX), Field Emission Scanning Electron Microscopy (FESEM) and Raman spectroscopy. It was found that the CNTs diameters increased with the temperature. The CNTs diameters were continually increased from 70 nm to 180 nm in the temperature range. In addition, the degree of crystallinity of the grown CNTs decreased.