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The polymerization of fullerenes has been an interesting topic for almost three decades. A rich polymeric phase diagram of C60 has been drawn under a variety of pressure-temperature conditions. However, only linear or perpendicular linkages of C60 are found in the ordered phases. Here we used a unique bilayer structural solvate, C60·1,1,2-trichloroethane (C60·1TCAN), to generate a novel quasi-3D C...
The stability, geometric structure and electronic properties of a novel body-centered tetragonal carbon allotrope Bct C8 are systematically investigated. Bct C8 are formed by sp3-bonded carbon atoms and can be regarded as a compressed bundle of carbon nanotubes (CNT). The transition path from CNT to Bct C8 has been simulated, indicating a possible approach to synthesize Bct C8. The X-Ray diffraction,...
Heteroatom doped carbon materials (DCM) have gained tremendous attention due to their highly promising applications as well as low costs, therefore, time-/cost-/operation-effective fabrication of doped carbon materials holds great meanings to both scientific and practical fields. Here in this study, metal-free DCM could be fabricated rapidly (<5 min) at room-temperature, which could engage the...
Reduced graphene oxide (rGO), as a newly emerged carbon material, has attracted great attention concerning its applications for electrocatalysts. Presently, there are mixed opinions regarding the advantages to using rGO as a support for preparing nonprecious metal catalysts for the oxygen reduction reaction (ORR). The primary goal of this work is to determine whether rGO would be favorable for non-precious...
Electrocatalysts of graphene-supported Pt–Co alloy nanoparticles (Pt–Co/G) were prepared by a simultaneous reduction of mixtures of graphene oxide and Pt (IV), Co (II) ions with ethylene glycol assisted by a microwave and further H 2 treatment at 300°C. As-prepared Pt–Co/G catalysts were characterized by transmission electron microscopy, energy-dispersive X-ray spectrometry, X-ray diffraction,...
Interactions between carbon nanotubes (CNTs) and aluminium particles during the mechanical alloying (MA) via ball milling have been investigated from the viewpoint of particle behaviour with the aim at developing CNT-dispersed Al matrix composites based on powder metallurgy routes. It was observed that the use of the curly small-diameter multi-walled carbon nanotubes (MWCNTs) in the MA prevented the...
The growth of double-layered vertical-aligned carbon nanotube (CNT) arrays by a single step chemical vapor deposition is reported. The deactivation and reactivation of catalyst particles may be the cause of such a growth process. An interesting morphology difference between the top and the bottom CNT layers was observed. In contrast to the smooth surface of the top CNT layer, the surface of the bottom...
The construction of vapor-grown carbon fiber (VGCF) conductive networks through the self-assembly process in a poly(vinylidene fluoride) (PVDF) melt was investigated. Depending on real-time tracing of the variation of electrical resistivity with isothermal treatment time, the properties and possible assembly mechanism of PVDF/VGCF composites were evaluated. It was found that the self-assembly velocity...
The effect of a new bimetallic catalyst Ho/Ni for synthesis of single-walled carbon nanotubes (SWNTs) by arc discharge has been studied. Long ribbons consisting of roughly-aligned SWNT bundles were obtained by a modified arc discharge apparatus. Ribbon lengths can reach as much as 20cm. Both elements Ho and Ni play important roles in the synthesis of SWNTs with high yield and purity. Changes in the...
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