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Inspired by the highly efficient water transport presented in hourglass-shaped aquaporin channels, molecular dynamics simulations were conducted to study water desalination in carbon nanocones (CNCs). Their desalination performance (salt rejection, water flow) depends on the cone size, angle, and flow direction (nonequilibrium). Free energy calculations reveal that ultrasmall CNCs with apex angles...
A high-performance, all-solid-state hybrid supercapacitor (HSC) device was assembled successfully. The ZnCo2O4 nanowire array (NA)/carbon nanotube film (CNTF) positive electrode materials and the assembled device possess areal specific capacitances of 1.019 F cm−2 and 158.08 mF cm−2, respectively. A supernal volume energy density of 49.5 mWh cm−3 was obtained when the voltage window increased to 1...
Nanocrystalline graphene/graphite hybrids all carbon transparent electrodes were fabricated from photoresist with a photolithography method by the carbonization and graphitization of the aromatic molecules in the photoresist. The sheet resistance and transmittance of the hybrids transparent electrodes can be easily optimized by modulating the photoresist grid size and gridline width. The optimized...
Stacking order of layered materials strongly influences their electronic properties. Bernal (AB) and rhombohedral (ABC) stacking are much common in few-layer graphenes. Here, we found that AB- and ABC-stacked few-layer graphenes can be well distinguished by whether their highest-frequency shear modes are observed or not in the Raman spectra at room temperature. This method can be expanded to Raman...
Design and fabrication of functional carbon nanostructures is a challenging but meaningful mission for scientists to propel the development of nanotechnology, such as nanopharmacology, nanobiology and nanofluidic manipulation. In order to fabricate the carbon nanostructures, using forced-field-based molecular dynamics simulations, we proposed a feasible method to obtain the carbon nanostructures through...
Reduced graphene oxide (RGO) with different amounts of wrinkling were synthesized in a water–ethylene glycol (EG) system with different volume ratios. The obtained RGO were characterized by X-ray powder diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning and transmission electron microscopy, thermogravimetric analyze, and Brunauer–Emmett–Teller N 2 adsorption–desorption...
Graphene oxide (GO) was functionalized by acetyl chloride to form carboxylated graphene oxide (GO-COOH). GO-COOH decorated with La particles with diameters between 0.2 and 1μm was prepared by the sonication of a LaCl 3 aqueous solution with GO-COOH. The La-decorated GO-COOH was characterized by FT-IR, TGA and TEM, and its antibacterial properties were characterized by bacteria growth kinetics...
In Raman spectroscopy investigations of defective suspended graphene, splitting in the D band is observed. Four double resonance Raman scattering processes: the outer and inner scattering processes, as well as the scattering processes with electrons first scattered by phonons (“phonon-first”) or by defects (“defect-first”), are found to be responsible for these features of the D band. The D sub-bands...
A simple, time-saving, and user-friendly one-pot strategy is demonstrated for the synthesis of a novel ternary reduced graphite oxide/SnO 2 /Au hybrid nanomaterials using exfoliated graphite oxide, SnCl 2 and HAuCl 4 as the staring materials. The synthesis process can be finished within 2h in a solution phase, without using any surfactant and toxic or harsh reagent such as...
A graphite oxide (GO)/heparin–benzalkonium chloride (C12) composite was synthesized. The composite was characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). XRD data showed that spacing between layers of GO increased from 0.59 to 3.256nm. This enlarged layer spacing suggested that heparin–C12 complex intercalated completely in between layers of GO. FTIR also...
The effect of melt mixing on the interaction between multi-walled carbon nanotubes (MWNTs) and polystyrene (PS) matrix has been investigated. The interaction between pristine MWNTs and PS in solution was found to exist but not strong enough to allow MWNTs to be soluble in solvent. In contrast, this interaction between MWNTs and PS was significantly enhanced by melt mixing, which led to increased amount...
Thermal fatigue behavior of two-dimensional carbon fiber reinforced SiC matrix composites fabricated by chemical vapor infiltration technique was investigated using an on-line quench method in controlled environments which simulated an aero-engine gas. A system of damage information acquisition (SDIA) was developed to study changes in electrical resistance of the C/SiC composites during their damage...
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