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The experimental approach combining high resolution transmission electron microscopy (HRTEM), electron diffraction (ED) and resonant Raman spectroscopy (RRS) on the same free-standing individual carbon nanotubes (CNT) is the most efficient method to determine unambiguously the intrinsic features of the Raman-active phonons. In this paper, we review the main results obtained by the approach regarding...
Bulk heterojunction films made of polychiral single-walled carbon nanotubes (SWCNTs) form efficient heterojunction solar cells with n-type crystalline silicon (n-Si), due to their superior electronic, optical, and electrical properties. The films are multi-functional, since their hierarchical surface morphology provides a biomimetical anti-reflective, air-stable, and hydrophobic encapsulation for...
Graphene Oxide (GO) nanosheets have been covalently functionalized with Poly(Bisphenol A-co-epichlorohydrin) (PBE) a polymer structurally analogous to polycarbonate and derived from Bisphenol-A. PBE-functionalized-GO (PBE-GO) was utilized to form PBE-GO:PBE thin-film nanocomposites by dispersion of the PBE-GO within a solution of the PBE polymer followed by solvent evaporation to form thin-films....
Graphene oxide (GO) foam exhibits both excellent elastic property and high relative dielectric permittivity, which is a novel building block for future wearable electronic devices. Herein we present an ultra-sensitive GO-based capacitive pressure sensor with graphene as electrodes by an efficient, low-cost fabrication strategy over large-area integration as well as patterning for recording spatial...
Graphene oxide samples prepared in various laboratories following a diversity of synthesis protocols based on Brodie's (BGO) and Hummers/Offeman's (HGO) methods were compared in respect of their in-plane moduli. A simple wrinkling method allowed for a spatial resolution <1.5 μm by converting the wrinkling frequency. Quite surprisingly, a drastic variation of the in-plane moduli was found spanning...
After the discovery of the highly symmetric Buckminsterfullerene (BF), a major goal of the fullerene community has been to understand its formation mechanism. In the various mechanisms proposed in literature, BF forms by either a bottom-up only or a top-down only process. Here we present a comprehensive quantum mechanical molecular dynamics simulation study, that reports for the first time the observations...
Transition metal sulfides coupled with carbon materials hold a promising application platform for high-performance supercapacitors. Herein, we report a strategy to fabricate a type of integrated CoSx hollow nanoparticles (HNPs)/C hybrid nanofibers via electrospinning technique combining with hydrothermal method. Results show that the in-situ formed CoSx HNPs were completely covered by a layer of onion-like...
Conductive yarns were successfully prepared through the assembly and reduction of graphene oxide on the surface of viscose yarns and the relationship between network structure of yarn assembles and electromechanical properties of knitted or weave fabrics was analyzed. The loop and interlacing structure, which were provided by knitted and weave fabrics respectively, could result in different electrical...
For the first time, self-assembled cauliflower-like FeS2 anchored into three-dimensional graphene foams (3DGF-FeS2) are synthesized by one-pot hydrothermal method. Without polymeric binders, conductive additives, or metallic current collectors, the 3DGF-FeS2 composite can be directly used as freestanding and binder-free anode for lithium-ion batteries (LIBs), which demonstrates pronounced electrochemical...
Doped carbon allotropes are promising materials for use in a range of applications in energy harvesting and gas adsorption. Synthesis of multifunctional C is however challenging as it requires simultaneous control over surface area, conductivity, chemical nature and loading of heteroatoms in the carbon matrix, usually yielding a material at a time that favours a single application. Pyridinic-N on...
Nitrogen-doped carbon quantum dots (N-CQDs)/BiPO4 materials have been prepared through an ionic liquid assisted solvothermal method. After the introduction of N-CQDs, the N-CQDs/BiPO4 materials exhibited the increased photocatalytic activity for the degradation of four kinds of colorless pollutants under UV irradiation, such as antibiotic ciprofloxacin, enrofloxacin, tetracycline and phenol 4-chlorophenol...
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