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The remarkable functional properties of diamond depend not only on its physical and chemical properties but also on its surface morphology. Ordered porous diamond with hierarchical structures is used in various applications in the fields of environment and energy management. However, obtaining such micro- and nanostructures via conventional techniques has proven to be challenging because of the superhardness...
Exploring low-cost and highly efficient non-precious metal electrocatalysts toward oxygen reduction reaction is crucial for the development of fuel cells. Herein, we report the synthesis of bamboo-like N-doped carbon nanotubes with encapsulated Fe-nanoparticles through high-temperature pyrolysis of multiple nitrogen complex consisting of benzoguanamine, cyanuric acid, and melamine. As-prepared catalyst...
A new carbon-based morphology, graphene spirals (GSs), possesses interesting electronic features with inter-layer interaction and intra-layer interaction, ascribed to its unique intra-system electronic coupling states. The spin-polarization and the tunneling patterns of GSs manipulated by the periphery structural modification were investigated in detail with first principle calculations. The spin-polarized...
Nitrogen-doped mesoporous carbon nanosheets (NMCNs) were prepared from coal tar and melamine using a layered MgO as template. Porous structures and nitrogen doping levels were readily tuned by adjusting experimental parameters. NMCNs show high specific capacities and excellent cyclic stabilities as anode materials for lithium ion batteries. A sample prepared under optimum conditions shows a high reversible...
For the first time, electrochemically generated superoxide ions on a porous carbon electrode are investigated by means of in situ electrochemical ESR technique at ambient conditions. Superoxide ions (O2·−) are detected as the product of the electrochemical O 2 reduction reaction. The redox couple (O 2 /O2·−) is reversible in DMSO electrolyte. The superoxide ions are believed to be...
Carbon–Fe 3 O 4 coaxial nanofibres with a diameter around 100nm were synthesized by pyrolysis of ferrocene in supercritical CO 2 at 400°C. The single crystal Fe 3 O 4 cores of the coaxial nanofibres are continuous, and the carbon shell is rich in H. The M–H hysteresis loop for the nanorodes measured at room temperature shows a saturation magnetization of 27...
Polycrystalline diamond films deposited using hot filament chemical vapor deposition (CVD) technique have been investigated in atomic oxygen simulated as low earth orbit environment to examine their erosion resistance properties. After exposure to the atomic oxygen beam with a flux of 2.6x10 16 atoms/cm 2 s, the diamond films only show a small mass loss. The reaction efficiency...
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