LAUSR

Abstract In this work, we demonstrate the large-area synthesis of graphitic filamentous nanocarbon-aligned carbon thin layer (GFNACTL) on Cu foil by chemical vapor deposition of C 2 H 2 at 700 °C at 5 Torr pressure. The thickness of the GFNACTL can be controlled to vary in the range 50–4000 nm by varying the synthesis time. The graphitic filamentous nanocarbon with outer diameters ∼10–20 nm have highly oriented and well-connected graphitic structures that are stacked perpendicular to the growth direction. This result shows that the presence of a native oxide layer on the Cu foil was beneficial for the GFNACTL growth. Our approach can be extended to the one-pot synthesis of GFNACTL/carbon nanotube (CNT) forest hybrid thin films. The tip growth of CNTs with diameters of ∼50 nm was catalyzed on the GFNACTL by Cu 41 Sn 11 nanoparticles. Corrosion measurements were performed in 0.6 M NaCl solution. Electrochemical analysis revealed a strong improvement in corrosion resistance as compared to pure Cu specimens, indicating the superior uniformity and promise of the GFNACTL/CNT forest hybrid thin films for application as a protective coating.