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Graphitic carbon nanocage (GCNC) is an important member of the graphene-based nanomaterial family. Here, GCNCs were synthesized and used for cancer photothermal therapy (PTT) induced by 980-nm laser irradiation at a low power density (0.28 W/cm2). Upconversion nanoparticles (UCNPs) were also synthesized and used in solution to confirm laser irradiation of samples containing GCNCs, cancer cells, or...
Reproducible and in-depth studies of the electrochemical graphite intercalation and oxidation processes were carried out with the use of an electrochemical Tee-cell setup. The electrochemical method allowed simpler and greater controllability over the level of oxidation/functionalization, relative to the commonly employed chemical oxidation approach (e.g. the modified Hummers method). Extensive characterization...
Graphitic quantum dots (GQDs) are synthesized from natural graphite powder. This process involves a few steps such as oxidation, reduction and filtration to obtain the precursor to prepare GQDs. Finally, a combination of UV irradiation and sonication is used to produce GQDs. These quantum dots are further investigated by various characterization techniques. They exhibit blue luminescence and ferromagnetic...
By alternating deposition of graphene oxide (GO) sheets and silver nitrate by means of an electrostatic self-assembly method, a GO–Ag + film was prepared. After thermal annealing, a graphene–silver nanoparticle (GE–Ag) multilayer film, with high transparency and electrically conductivity, was obtained. The transmittance of a film with four assembly cycles was 86.3%, at a wavelength of 550nm,...
Two phenomena were observed when a copper specimen was irradiated by normal electron beam in a transmission electron microscope. One is the growth of the rod-like carbon aggregates normally stemmed from the substrate of specimen, with their unique fir-like shape and pattern caused by the deposition of hydrocarbon molecules. These molecules come from the boiling and evaporating of the diffusion pump...
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