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The authors describe strongly red-emitting carbon dots (CDs) which were obtained via microwave synthesis using phenylenediamine as the carbon source. The structural and optical properties of the resultant CDs are studied in some detail. The CDs possess (a) longwave emission (peaking at 620 nm under 470 nm excitation), (b) a quantum yield of ~15%, (c) a size of typically 3.8 nm; and (d) good photostability...
A sandwich structured nanocomposite consisting of mildly reduced graphene oxide modified with silver nanoparticles supported on Co3O4 was synthesized and used for fabricating a nonenzymatic sensor for H2O2. The morphology and composition of the nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction and FTIR. The composite was placed...
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