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Recently, the electrogenerated chemiluminescence (ECL) of carbon nanodots (C-dots) have been detected and the signal is applied for sensitive determination of environmental pollutes and biological active molecules. A few of researches have been reported on the mechanisms of C-dots that the electro-generated cation and anion intermediates undergo electron-transfer annihilation to give off strong ECL...
A facile and high-efficient approach for the preparation of graphene quantum dots (GQDs) is reported. With the assistance of KO2 in the hydrothermal cutting graphene oxide (GO), a conversion rate of ∼35 wt% from GO to GQDs is achieved. The as-prepared GQDs display rarely observed yellow emissive photoluminescence with a respectable quantum yield of 8.9% in H2O. Moreover, the GQDs are further demonstrated...
Lithium metal phosphate (Li2MPO4) and silicates (Li2MSiO4) (where M=Fe, Mn, and Co) are promising polyanion cathodes for rechargeable lithium batteries, owing to the inherent merits such as low cost, decent electrochemical property, and high stability. However, these merits have often been undermined by insufficient energy and power delivery due to poor Li extraction/insertion kinetics. It is generally...
Photoluminescent carbon dots (C-dots) were prepared directly by a simple hydrothermal treatment using polyethylene glycol with different molar weight (400–6000gmol −1 ) as the sole carbon source. The synthesized C-dots with tunable diameters of 2–4nm exhibit excitation-dependent photoluminescent behavior. In contrast to previous methods, neither strong acid treatment nor further surface modification...
Semiconducting graphene oxide/polyaniline (GO/PANI) composite particles for potential electrorheological (ER) fluid applications were synthesized by the in situ dispersion polymerization of aniline in the presence of GO particles, which were prepared using a modified Hummers method. The electroresponsive ER characteristics of the composite when dispersed in silicone oil exhibited a phase transition...
Microphase-separated styrene–butadiene–styrene (SBS) triblock copolymer was utilized as a template for the selective self-assembly of polystyrene (PS)-functionalized carbon nanotubes (CNTs) in the PS phase. It was also found that PS-functionalized CNTs could be accommodated in the PS phase of SBS regardless of the molecular weight of the PS ligand. This is different from the case for assembling nanoparticles...
Bifunctional catalysts (Ag–MnO 2 )/SWNT were prepared by using a simple chemical reduction route on single-walled carbon nanotubes (SWNT). Five weight percentage of Ag–MnO 2 on SWNT was found to be the best loading in terms of current density. The (Ag–MnO 2 )/SWNT catalyst was characterized and the kinetics towards oxygen reduction reaction (ORR) was determined and compared...
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