Template synthesis of boron nitride nanotubes over iron impregnated mesoporous silica MCM-41 by chemical vapor deposition technique
Saner Okan, Burcu and Kocabaş, Özlem Züleyha and Nalbant Ergün, Aslı and Yürüm, Yuda (2011) Template synthesis of boron nitride nanotubes over iron impregnated mesoporous silica MCM-41 by chemical vapor deposition technique. In: 17th International Symposium on Boron, Borides and Related Materials (ISBB 2011), Istanbul, Turkey
BN nanotubes were successfully grown over iron impregnated MCM-41 at a relatively low temperature of 750oC for 1 hour by CVD technique. BN nanotubes were obtained after the purification procedure including HCl and HNO3 treatments to remove impurities. SEM image showed the formation of nano-fibrous network BN structures in the diameter range of 20 nm to 40 nm. Both XRD and FTIR characterization results supported the formation of h-BN and c-BN nanostructures. Oxidative TGA results indicated that the synthesized BN nanostructures were thermally stable at temperatures higher than 550oC. Hydrogen storage measurements via IGA showed that BNNTs could adsorb 0.85 wt% hydrogen which was two times larger than for commercial CNTs.
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