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HNO3-oxidized single-wall carbon nanotubes (SWCNTs) and graphene oxide (GO) were ultrasonically dispersed in water to which potassium permanganate was added, and the resulting mixtures were treated under microwave radiation at 100°C for 1h or hydrothermal conditions at 100°C for 1, 5 and 10h to prepare SWCNT–GO/MnO2 composites as electrode materials of electrochemical capacitors. Results indicate...
Graphene oxide (GO) prepared by a modified Hummers method was reduced by NaBH4 at room temperature for 12h in a 0.5mg/mL GO water suspension to obtain reduced GO (RGO), using CaCl2 as a catalyst. The GO and RGO were characterized by XPS, FT-IR, UV–Vis and electrical resistivity measurements. Results show that CaCl2 improves the reduction ability of NaBH4 for oxygen-containing functional groups on...
Nanoporous carbons with a hierarchical pore structure were prepared by a combination of hard-templating of a thermosetting phenolic resin containing silica nanoparticles, pyrolysis and KOH activation. The influence of the amount of KOH on the pore structure of the templated and activated carbons was investigated by N 2 adsorption and the effect of pore structure on the CO 2 adsorption...
A new approach is described for preparing carbon foam (CF) through coaxial electrohydrodynamic atomization (EHDA). Using polyacrylonitrile (PAN) and borneol as a carbonaceous precursor and a blowing agent, respectively, hybrid PAN-borneol films were prepared and transferred to a honeycomb PAN membrane through blowing, drying, and pre-oxidation with the CF prepared by carbonization of the PAN film...
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