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A flowerlike C/Fe2O3 nanosheet assembly, in which the surface is coated by a hydrothermal carbon (HTC) layer with thickness of 3–5 nm, has been successfully synthesized via a one-step hydrothermal strategy. Due to the coated HTC layer, the C/Fe2O3 nanosheet assembly exhibits the significantly enhanced efficiency for the removal of organic pollution, including the physically adsorption capacity and...
Transition metal sulfides coupled with carbon materials hold a promising application platform for high-performance supercapacitors. Herein, we report a strategy to fabricate a type of integrated CoSx hollow nanoparticles (HNPs)/C hybrid nanofibers via electrospinning technique combining with hydrothermal method. Results show that the in-situ formed CoSx HNPs were completely covered by a layer of onion-like...
A facile one-step synthesis strategy has been developed for producing fluorescent carbon quantum dots (CQDs) from a kind of Chinese coal, Jincheng anthracite. Surface grafting of the CQDs was completed and systematically investigated by grafting with a series of organic amino molecules. It was found that the solubility and the optical properties of CQDs vary with and depend on its surface chemistry...
Graphene nanoscrolls (GNSs) are receiving intense interest because they are expected to possess some peculiar properties quite distinct from both graphene and carbon nanotubes. Research on GNS, however, has been hindered by limitations of the available preparation methods. Here we demonstrate a novel strategy for the large-scale preparation of GNSs from graphene oxide (GO) sheets by cold quenching,...
We report a novel method to reduce layer number and structural defects of few-layer graphene (FLG) in He/H2 arc discharge via rapid cooling treatment. By adjusting the parameters of He/H2 mixtures appropriately, the effects of incremental cooling rates on the formation, morphology and structural defects of the raw soot have been investigated. According to observations of transmission electron microscopy...
Graphene oxide (GO) was modified with polyethylene glycol mono-methyl ether 750 (MPEG750) by esterification to increase its dispersibility in solvents and a GO/PEG-4000 composite was prepared by solution blending. Results showed that the GO-MPEG750 is dispersible in both polar and nonpolar solvents. The thermal stability of the PEG-4000 could be improved significantly by adding as little as 1mass%...
Multi-walled carbon nanotubes (MWCNTs) were grafted onto carbon fibers (CFs) using an injection chemical vapor deposition method. The orientation and length (16.6–108.6μm) of the MWCNTs were controlled by the surface treatment of the CFs and the growth time, respectively. The interface between the MWCNTs and the CFs indicated the grafted CNTs were immobilized by embedding catalyst on CFs. Two orders...
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