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A novel hierarchical structural hybrid of two-dimensional CoS1.097 sheets assembled and decorated on reduced graphene oxide sheets (CoS1.097/RGO) with an intriguing sandwich-like structure are evaluated as electrocatalyst for the reduction of triiodide. In this composite, RGO worked as high speed electronical conductive platforms facilitates transfer of electrons, while CoS1.097 nanosheets as high-catalytically...
A novel nanocomposite of Co0.85Se nanotubes with reduced graphene oxide (Co0.85Se/RGO) is prepared by a facile hydrothermal approach coupled with in situ selenization, which is applied as counter electrode in dye-sensitized solar cells. Electrochemical analysis shows that the Co0.85Se/RGO composite displays a higher electrocatalytic activity for the reduction of triiodide respect to its single components...
The Monte Carlo simulation has been applied to discuss the step effect on a zigzag graphene nanoribbon structure in a longitudinal magnetic field. The effects of the singe-ion anisotropies, longitudinal magnetic fields and temperature on the magnetization plateaus have been investigated in detail. Our results show that the number of magnetization plateaus for the system dissatisfy 2S + 1 criterion...
A novel sandwich-like hierarchical structure composed of reduced graphene oxide (RGO) and uniform cobalt disulfide (CoS2) octahedrons is successfully prepared by a simple one-step solvothermal process, in which Co2+ cations attracted into graphene framework by the electrostatic adsorption induce the growth of octahedral CoS2 nanoparticles between the layers of graphene. The fascinating sandwich-like...
Single-walled carbon nanotube (SWCNT) was synthesized from short nanotubes using chemical vapor deposition (CVD) and the associated factors affecting the re-growth of the SWCNT were both investigated and optimized. Long, dense nanotubes were prepared from a mixture of acetylene and ethanol on air-annealed ST-cut quartz substrates by hot-wall CVD. Raman and photoluminescence analyses of the resulting...
In this study, the electrooxidative carbon nanotube (CNT) filtration of sorptive methyl orange (MO) and non-sorptive ferrocyanide was investigated by both experiment and numerical simulation. The two-dimensional numerical model includes target molecule; mass transport, adsorption, and electron transfer and product desorption. For MO, the model was calibrated with experimental reaction rates from the...
Multilayer graphene/polymer composite films with good mechanical flexibility were fabricated into paraffin-based sandwich structures to evaluate electromagnetic interference (EMI) shielding. Experimental results showed the relationship between electrical properties and shielding performance, demonstrating that electrical properties are significant factors in EMI shielding. Calculation based on electrical...
Based on the storage mechanism of methane in wet carbon, the pore size of activated carbon must match the dimension of methane hydrates, and 1.6–2.8nm was recognized as the optimal pore size. Targeting at the optimal pore size, a progressive activation process was applied on corncob precursors and a carbon possessing abundant pores of the optimal size was prepared. Both gravimetric and volumetric...
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