Blue-fluorescent and biocompatible carbon dots derived from abundant low-quality coals.

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ID: 60682
2019
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Abstract
Coal is one of the most abundant natural carbonaceous materials. This paper reports a novel oxidative chemical method for the synthesis of high-value carbon dots (CDs) from cheap and abundant low-quality high‑sulfur coals for use in high-end applications. These CDs were synthesized by using wet-chemical ultrasonic stimulation-induced process which is environmentally facile and less drastic compared to other chemical methods of production of CDs. The sizes of the synthesized CDs from different types of coal samples were estimated to be in the range of 1-4 nm, 1-6 nm, 2-5 nm, and 10-30 nm. The quantum yield (QY) of the CDs was determined and it was found to be around 3-14%. For high-end field application, the CDs were further tested for toxicity and were reported to be safe for environmental and biological applications. The cell image analysis under the fluorescence microscope further indicated that the synthesized CDs could be used as a promising bio-compatible material for optical-imaging as well as bio-imaging. The CDs showed promising fluorescent sensing property and can be utilized as a good probe for silver ion detection/sensing. The CDs is also found to be a promising reagent for silver nanoparticles synthesis. The results provide a new avenue for large-scale synthesis of CDs.
Reference Key
das2019bluefluorescentjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Das, Tonkeswar;Saikia, Binoy K;Dekaboruah, H P;Bordoloi, Manobjyoti;Neog, Dipankar;Bora, Jayanta J;Lahkar, Jiumoni;Narzary, Bardwi;Roy, Sonali;Ramaiah, Danaboyina;
Journal journal of photochemistry and photobiology b, biology
Year 2019
DOI
S1011-1344(19)30092-2
URL
Keywords
carbon nanomaterials carbon dots (cds) fluorescent materials low-grade coal silver ion sensor wet-chemical synthesis

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