The CQD's were normally synthesized through supercritical reactor process of organic salt of single carbon source, Citric Acid (CA) with the surface modifier polymer Poly sodium 4-styrene sulfonate (PSS). Attachment of PSS on CQD surface makes PSS-CQD powder easily dispersible in aqueous suspension. The citric acid served as the carbon source, while PSS provided stabilization, dispersion in water and control over the particle size.Carbon Quantum Dots are proven as nontoxic and very much environmental friendly the toxicity test was done at IAS-PSG college, Coimbatore, and found as nontoxic.
National Geophysical Research Institute (NGRI)
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