Abstract
The present work deals with synthesis of carbon quantum dots (CQDs) from some easily available organic resources as urea and citric acid. The heating of these precursors leads to formation of strong photoluminescent carbon quantum dots (CQDs). The characteristics of prepared CQDs have been analyzed by UV–Vis absorption, fluorescence and FTIR spectroscopy. The average size of synthesized CQDs obtained was 6.8 nm which was further verified with FESEM image analysis. The band gap of 3.15 eV have been estimated for the synthesized CQDs from absorption data. The appearance of high intense luminescence emission validates CQDs’ strong candidature as promising sensors for today’s optoelectronic and biomedical industries.
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