Synthesis of crystalline SiC nanofiber through the pyrolysis of polycarbomethylsilane coated platelet carbon nanofiber

Abstract

SiC nanofiber with high crystallinity was synthesized through the pyrolysis of polycarbomethylsilane (PS) coated platelet carbon nanofiber (PCNF) over 700°C and burning PCNF under the oxidative atmosphere. The as-prepared β-SiC nanofiber exhibited a diameter less than 100nm and a medium surface area of 50m2/g. The crystallinity of silicon carbide (SiC) nanofiber increases with increasing heat-treatment temperature, showing the formation of high crystalline SiC nanofiber at 1400°C. PCNF can be used as a unique template to govern the shape, crystallinity and morphology of SiC.