Key Influences on the Preparation of Carbon Nanotubes by Chemical Vapour Deposition: Optimisation of Catalysts, Gas Parameters and Reaction Conditions

Abstract

Carbon nanotubes (CNTs) have garnered significant interest in the field of nanomaterials due to their remarkable physicochemical properties, including exceptional strength, electrical conductivity, and thermal stability. The predominant method for synthesizing CNTs is chemical vapor deposition (CVD), a process that allows for precise control over the nanotube characteristics. This paper investigates the crucial roles of catalysts, reaction gases, and specific reaction conditions in the CVD method for CNT growth. It elaborates on how the selection of an appropriate catalyst, optimization of gas flow rates, and meticulous control of reaction temperature and duration can significantly influence the growth rate, structural integrity, and overall quality of the produced CNTs. Furthermore, the study confirms that by strategically adjusting these parameters, both the yield and purity of CNTs can be markedly enhanced. Ultimately, the objective of this paper is to provide insights that will facilitate the broader industrial application of CNTs, contributing to advancements in various fields such as electronics, materials science, and nanotechnology by optimizing the critical factors that affect their synthesis. This work aims to pave the way for innovative applications of CNTs in emerging technologies.