Synthesis and characterization of carbon nanomaterials obtained using electric discharge

In recent years, carbon nanomaterials have been studied for their applications in important areas of engi neering and technology due to their unique physical, chemical, and biological properties. The high demand for developing carbon nanomaterials through environmentally friendly and low-cost synthesis strategies has resulted in significant efforts being undertaken worldwide. This study presents the synthesis and char acterization of carbon nanomaterials (CNMs) using the electric arc discharge method under conditions of 75 V and 100 A. A copper substrate was employed to promote material deposition. Structural and morpho logical properties were examined using SEM and Raman spectroscopy. The results revealed the formation of multilayer carbon nanostructures with a high degree of graphitization (up to 88.98%) and particle sizes ranging from 38 to 53.5 nm. Electrophysical measurements demonstrated high dielectric constants and semiconducting behavior over the temperature range of 293–483 K, indicating the material’s potential for electronic applications. The synthesis method offers a scalable, cost-effective, and environmentally friendly approach to producing high-quality carbon nanomaterials. Key words: сarbon nanotubes (CNTs), graphitization, temperature dependence, nanostructured materials, graphitic structures.