Template synthesis of boron nitride nanotubes over iron impregnated mesoporous silica MCM-41 by chemical vapor deposition technique

摘要

BN nanotubes were successfully grown over iron impregnated MCM-41 at audrelatively low temperature of 750oC for 1 hour by CVD technique.udud BN nanotubes were obtained after the purification procedure including HCl and HNO3 treatments to remove impurities. udud SEM image showed the formation of nano-fibrous network BN structures in the diameter range of 20 nm to 40 nm. udud Both XRD and FTIR characterization results supported the formation of h-BN and c-BN nanostructures.udud Oxidative TGA results indicated that the synthesized BN nanostructures were thermally stable at temperatures higher than 550oC. udud Hydrogen storage measurements via IGA showed that BNNTs could adsorb 0.85 wt% hydrogen which was two times larger than for commercial CNTs. ud