ABSTRACT
Sulfur-doped carbon nanotubes (SCNT) with high sulfur contents have been prepared using chemical
vapor deposition (CVD) from sulfur powder, acetylene gas and Fe/CaCO3 (as catalyst). In this regard,
various growth’s temperatures were examined to investigate its effects on the structure and the sulfur
content of prepared SCNT. The best condition was obtained at 700
C and using 4 g of sulfur powder. The
product was characterized using FE-SEM and EDS, which showed rode-like SCNT with about 40 nm
diameter and 10.75% sulfur content. Moreover, TEM, Raman and XPS analyses were employed to obt
ain more details related to the product. The XPS results confirmed the presence of sulfur atoms, which
covalently incorporated in the carbon framework. Finally, the catalytic ability of the product in oxygen
evolution reaction was examined and the results showed high stability and low oxygen production rate
for this product.