Influence of Reaction Parameters on the Structural and Morphological Properties of Carbon Nanocoils Synthesized Using Al<sub>3</sub>Y and Effect of Rh Addition

In the contemporary world, carbon nanocoils (CNCs) act as mainspring in both fundamental and applied levels in nanotechnology advancements. They are attributed to their remarkable electrical, thermal, chemical, and mechanical properties inherited from the synthesis method; they are predestined for many potential applications. Catalytic chemical vapor deposition (CCVD) is the prevailing synthesis method for producing CNCs with controlled morphology and structural properties. In this study, Al3YRhx (x = 0, 0.2, 0.5, and 1.0) intermetallic catalyst series have been employed as a template for the catalytic conversion of an acetylene precursor into a solid material over the catalyst bed. The influence of reaction temperature, reaction duration, and Rh content in the catalyst in the structure and morphology of the CNCs prepared were analyzed through X-ray diffraction analysis, Raman spectroscopical investigation, and transmission electron microscopy. A detailed study on CNCS formed through spatial confinements by incorporating non-hexagonal rings in the graphitic skeleton leads to the coiling effect. Overall, nanotube synthesis has made significant progress by testifying the imperative reaction parameters in CCVD.