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Porous graphene (PG) has attracted tremendous attention and research interest due to its unique porous structure in combination with inherent properties of graphene. Herein, we report an efficient strategy for bulk preparation of PG by metal etching. The size of the pores and pore density in the basal plane of graphene sheets could be readily controlled by the reaction time and the ratio of the reactants...
We reported the fabrication of a hierarchical carbon nanotube (CNT) membrane by using the 90% granulated double- or triple-walled CNTs and 10% 100μm long multiwalled CNTs as the linker. The membrane with packing density of 420kg/m 3 , excellent electrical conductance and good mechanical strength, functioned as both the electrode and current collector and allowed the weight ratio of CNTs increased...
We used carbon nanotubes as oil adsorbents and evaluated recycling performance by squeezing method. The sorption capacity of 3mm long vertically aligned carbon nanotubes is almost 6.9 times higher than that of agglomerated carbon nanotubes due to the existence of large-sized macropores. Compared with exfoliated graphite (41g/g), aligned carbon nanotubes exhibit higher sorption capacity (69g/g) and...
Graphene nanosheet/carbon black composites were prepared by the ultrasonication and in situ reduction methods. Microstructure measurements show that most carbon black particles deposit on the edge surfaces of nanosheets by the ultrasonication method, and on the basal surfaces of nanosheets by in situ reduction method. The electrochemical performances of hybrid materials are superior to pure graphene...
Graphene nanosheet/polymer composites were prepared using in situ reduction–extractive dispersion technology. The morphology and microstructure of the composites were examined by scanning electron and optical microscopy. The results indicate that graphene nanosheets from the reduction of graphite oxide are about 5nm thick and 1–3μm in diameter. Reduction–extractive dispersion technology can effectively...
Exfoliated graphite materials had been rapidly and efficiently prepared by microwave irradiation in a short time (about 4min including 3min mixing and 1min microwave irradiation). The promotion of the intercalation by microwave irradiation was proven by X-ray diffraction. With increasing content of oxidant and intercalation agent, the expanded volume of exfoliated graphite increased at first and then...
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