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Carbon foams for oil/water separation were synthesized using lignin-phenol-formaldehyde (LPF) resin as the carbon source and polyurethane (PU) foam as the template. Lignin was extracted from sedge grass and was used to replace 25 wt% of the phenol to prepare a LPF resin in an alkaline medium. The carbon foams exhibit unique properties such as open macropores, low bulk density, good water repellency...
Graphene oxide was produced using a modified Hummers method and used to produce a MnSO4–graphene oxide (MnSO4–GO) hybrid which was then transformed into a MnO–graphene hybrid by precipitation with NaOH followed by hydrogen reduction. The MnO–graphene hybrid shows a high specific capacity of 870mAhg−1 at 100mAg−1 as an anode material for lithium ion batteries, which is much higher than that of bare...
Reduced graphene oxide/Mn3O4 (rGO/Mn3O4) nanocomposites were prepared from MnSO4 and GO produced by a modified Hummers method. The GO was deoxygenated by heat treatment, and MnO2 generated by hydrolysis of MnSO4 was simultaneously reduced to Mn3O4. The Mn3O4 content in the composites could be tailored by the volume of supernatant in the pristine GO/MnSO4 suspension. The maximum specific capacitance...
Graphene oxide was produced using a modified Hummers method and used to produce a MnSO 4 -graphene oxide (MnSO 4 -GO) hybrid which was then transformed into a MnO-graphene hybrid by precipitation with NaOH followed by hydrogen reduction. The MnO-graphene hybrid shows a high specifc capacity of 870 mAh·g −1 at 100 mA·g −1 as an anode material for lithium ion batteries,...
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