International Journal of Hydrogen Energy, Vol.45, No.15, 8703-8714, 2020
N-doped bamboo-like carbon nanotubes loading Co as ideal electrode material towards superior catalysis performance
A two-step thermal polarization process was developed to create N-doped bamboo-like carbon nanotubes with Co loading. Co-doped graphite carbon nitride (g-C3N4) nanosheets were prepared through the thermal polymerization of melamine. N-doped bamboo-like carbon nanotubes confirmed by Raman spectra were fabricated via further thermal polymerization at 750 degrees C using g-C3N4 nanosheets. Co nanoparticles were loaded during the thermal polymerization. Electrochemical tests indicate that Co-loaded samples revealed superior hydrogen evolution reaction (HER) performance. The Pt clusters were deposited on the Co-loaded nanotube. When the loading amount of Pt clusters is 0.21% wt, the HER performance of Co-loaded nanotubes was better than that of commercial Pt/C (20% wt of Pt loading) electrode. In contrast, those Ni loaded nanotubes exhibited excellent selectivity in the catalytic direction of furfural hydrogenation, in which 99.3% of furfural was converted to tetrahydrofurfuryl alcohol at 120 degrees C. These results inject new vitality into the research and application of ultra-thin g-C3N4 materials. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.