Synthesis of Carbon Nanotubes by Chemical Vapor Deposition on Stainless Steel 304 Substrate

Abstract

This study explores the synthesis of carbon nanotubes (CNTs) using chemical vapor deposition on stainless steel 304 (SS304) substrates. The SS304 substrates were first treated with 37 % hydrochloric acid for 0, 5, 10, and 15 minutes. Subsequently, CNT synthesis was carried out at temperatures of 700, 800, and 900 °C, with a 99.99 % ethanol flow rate of 330 ml/min for 2 hours. The optimal conditions for CNT synthesis were a temperature of 900 °C, with the SS304 substrate immersed for 5, 10, and 15 minutes. The resulting CNTs were multi-walled and exhibited tip growth.