Characterization of carbon nanotubes and carbon nanofibers prepared by catalytic decomposition of acetylene in a fluidized bed reactor

Decorating multiwalled carbon nanotubes with zinc oxide nanoparticles by thermally decomposing Zn-oleate in an organic medium

“…Figure 4(c), a field emission scanning electron microscopy (FE-SEM, AMRAY-1910), shows that most carbon nanotubes are effectively decorated by zinc oxide nanoparticles. An X-ray diffraction (XRD, Rigaku D max γA X-ray diffractometer with Cu-Kα radiation, λ= 0.154178 nm) pattern of the nanotube-ZnO heterostructure is shown in Figure 4(d), where the distinct peaks at 26.2°, 31.8°, 34.4°, 36.3°, 47.5° and 56.6° representing respectively the (002) crystal plane of carbon nanotubes [14] , the (100), (002), (101), (102) and (110) crystal planes of ZnO, revealed a wurtzite hexagonal crystal structure with high crystallinity (P6 3 mc, a = 3.249 Å, c = 5.206 Å, JCPDS No. 36-1451).…”

Electrochemical and Adsorption Properties of Catalytically Formed Carbon Nanofibers

“…The synthesis of VACNFs arrays were all carried out in horizontal reactors (Cao et al, 2001). All the reported products by vertical floating catalyst method were randomly arranged CNFs (Perez-Cabero et al, 2003). There are few reports on aligned CNF bundles synthesized by floating catalyst procedure, in vertical reactors (Cheng et al, 2004).…”

The effect of carboxylated multi-walled carbon nanotubes on reinforcement efficiency of thiazole-bearing poly(amide-imide) composites

“…For the MWCNTs-COOH, two peaks appeared at 2h = 26°and 44°which are typically associated with the diffraction of metal impurities 2h = 26°corresponds to the (0 0 2) diffraction plane of the impurity graphite and 2h = 44°to α-Fe (1 1 0) and/or Ni (1 1 1) diffractions. [30] For the neat PAI, the weak reflection centered at a 2h value around 20°was characteristic of the amorphous polymer. For the MWCNT composite samples, they showed similar XRD patterns to the pure polymer samples when the MWCNT composition was 5 wt.%.…”