Polypropylene and polystyrene were processed in a pyrolysis/catalytic reactor with a Ni-Fe/Al2O3 catalyst to produce carbon nanotubes (CNTs). A high yield of catalyst carbon deposits were produced; 33.5 g 100 g(-1) polypropylene and 29.5 g 100 g(-1) polystyrene and consisted of multi-...
The chemical-driven large pressure arising inside carbon nanotubes creates energetically stable, flattened, single-layered NbSe2 nanotubes with enhanced intermolecular electronic interactions, suggesting a chemical approach to produce materials with tailored structural and electronic properties. Yaxin Jiang , H...
Here we report a strong affinity of amine-functionalised multi-walled carbon nanotubes for spider silk, with coating assisted by a water and mechanical shear method. The nanotubes adhere uniformly and bond to the silk fibre surface to produce tough, custom-shaped, flexible and electrically ...
Carbon nanostructuressuch as carbon nanotubes,fullerene, and graphene with prominent electrical and structural characteristics have drawn much attention, because they can contribute in the development of composites with improved catalytic performance [1–9]. As one atom thick sheet of sp2-bonded carbon ...
Structural peculiarities: shape, orientation, defects of catalyst particles and fillings of as-prepared specimens were studied using HRTEM analysis. It was shown that orientations of metal particles, located inside carbon nanotubes (nanofibers), along the longitudinal axis for fcc and bcc crystal ...
In addition to the two different basic structures, there are three different possible types of carbon nanotubes. These three types of CNTs are armchair carbon nanotubes, zigzag carbon nanotubes, and chiral carbon nanotubes. The difference in these types of carbon nanotubes are created depending on ...
Based on different spinning methods, carbon nanotube fibers exhibit extremely rich assembly structures. Compared with its microstructure, the orientation, tightness and entanglement of carbon nanotubes in fibers, radial distribution of fibers, surface morphology and other structural properties further determine...
(Fig.4g) due to the positive curvature as similar to the carbon nanotubes [93]. The theoretical calculation in Fig.4h also proved that pentagon can substantially decrease the reaction free energy and facilitate the electron transfer for the ORR process. However, there is no direct evidence to ...
Here we show that this excitonic insulator is realized in zero-gap carbon nanotubes by performing first-principles calculations through many-body perturbation theory as well as quantum Monte Carlo. The excitonic order modulates the charge between the two carbon sublattices opening an experimentally ...
The effect of carbon nanotubes on mechanical properties of structural lightweight concrete using LECA aggregates Structures, 35 (2022), pp. 1204-1218, 10.1016/j.istruc.2021.09.003 Google Scholar Naji et al., 2021 H.F. Naji, N.N. Khalid, W.K. Alsaraj, M.I. Habouh, S. Marchetty Ex...