One-step hydrothermal synthesis of fluorescence carbon quantum dots with high product yield and quantum yield
نویسندگان
چکیده
منابع مشابه
Synthesis of Luminescent Graphene Quantum Dots with High Quantum Yield and Their Toxicity Study.
High fluorescence quantum yield graphene quantum dots (GQDs) have showed up as a new generation for bioimaging. In this work, luminescent GQDs were prepared by an ameliorative photo-Fenton reaction and a subsequent hydrothermal process using graphene oxide sheets as the precursor. The as-prepared GQDs were nanomaterials with size ranging from 2.3 to 6.4 nm and emitted intense green luminescence...
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متن کاملHigh temperature acidic oxidation of multiwalled Carbon nanotubes and synthesis of Graphene quantum dots
The acid oxidation of carbon nanotube generally results in opening the close ends of the nanotube and to make surface modifications. Herewith, Multiwall carbon nanotubes (MWCNTs) were oxidized in acids at high temperature experimental conditions which led to the formation of graphene quantum dots (GQDs). High resolution transmission electron microscope (HRTEM), energy dispersive X-ray spectro...
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The fluorescence quantum yield for ultraviolet laser-induced fluorescence of CO2 is determined for selected excitation wavelengths in the range 215–250 nm. Wavelength-resolved laser-induced fluorescence (LIF) spectra of CO2, NO, and O2 are measured in the burned gases of a laminar CH4/air flame (φ = 0.9 and 1.1) at 20 bar with additional NO seeded into the flow. The fluorescence spectra are fit...
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Recently, a kind of luminescent carbon nanomaterial – graphene quantum dots (GQDs) – has been attracting more and more attention. GQDs are graphene sheets of less than 100 nm in size, which have been regarded as a promising functional material due to their unique properties, such as ultraviolet and blue to green luminescence, two-photon induced FL, excellent photo stability, ands biocompatibili...
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ژورنال
عنوان ژورنال: Nanotechnology
سال: 2019
ISSN: 0957-4484,1361-6528
DOI: 10.1088/1361-6528/aaf3fb