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- W4200528227 abstract "In this work, graphene quantum dots (GQDs) were synthesized by femtosecond laser ablation in liquid using laser induced graphene as the carbon source. Nitrogen-doped graphene quantum dots (N-GQDs) were successfully synthesized by adding ammonia water to the graphene suspension. The GQDs/N-GQDs structure consist of a graphitic core with oxygen and nitrogen functionalities with particle size less than 10 nm, as demonstrated by x-ray photoelectron spectroscopy, Fourier infrared spectrometer spectroscopy, and transmission electron microscopy. The absorption peak, PL spectrum, and quantum yield of the N-GQDs were significantly enhanced compared with the undoped GQDs. Further, the possible mechanism of synthesis GQDs was discussed. Furthermore, the N-GQDs were used as a fluorescent probe for detection of Fe3+ions. The N-GQDs may extend the application of graphene-based materials to bioimaging, sensor, and photoelectronic." @default.
- W4200528227 created "2021-12-31" @default.
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- W4200528227 date "2021-12-22" @default.
- W4200528227 modified "2023-09-30" @default.
- W4200528227 title "Nitrogen-doped graphene quantum dots synthesized by femtosecond laser ablation in liquid from laser induced graphene" @default.
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- W4200528227 doi "https://doi.org/10.1088/1361-6528/ac4069" @default.
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