Graphene quantum dots (GQDs) from organic acids

An environmentally eco-friendly method of synthesis of graphene quantum dots (GQDs) was reported using pyrolysis of organic acids, viz., tartaric acid and ascorbic acid at 150-160 °C, which produce (GQDs) in the presence of NaOH. The heating time and effect of different pH on the formation of GQDs have been studied in detail to optimize the reaction conditions. The UV-visible absorption and normalized fluorescence spectra have been applied to analyze the optical and luminescent properties of GQDs. The particles size distribution of the GQDs obtained from different organic acids at different pH has been also determined. The microstructures and surface morphology have been studied by atomic force microscope (AFM)

N- Graphene Derivatives from Papaya Seeds: Synthesis and Chemistry

246-249A two-step synthesis of nitrogen containing graphene (N-graphene) from papaya seeds is reported here. The preparation of N-graphene from a non-graphitic nitrogen containing precursor, without doping is really a challenging task. However, when papaya seeds were pyrolyzed at 250 oC temperature for 2 hrs, it led to the formation of N-GO without any additional oxidizing agent. Further, N-GO was converted to Nr-GO in presence of thiourea as a reducing agent. The synthesized N-GO was found to remove 82 % of iron from ground water

N- Graphene Derivatives from Papaya Seeds: Synthesis and Chemistry

A two-step synthesis of nitrogen containing graphene (N-graphene) from papaya seeds is reported here. The preparation of N-graphene from a non-graphitic nitrogen containing precursor, without doping is really a challenging task. However, when papaya seeds were pyrolyzed at 250 oC temperature for 2 hrs, it led to the formation of N-GO without any additional oxidizing agent. Further, N-GO was converted to Nr-GO in presence of thiourea as a reducing agent. The synthesized N-GO was found to remove 82 % of iron from ground water

Graphene quantum dots (GQDs) from organic acids

128-134An environmentally eco-friendly method of synthesis of graphene quantum dots (GQDs) was reported using pyrolysis of organic acids, viz., tartaric acid and ascorbic acid at 150-160 °C, which produce (GQDs) in the presence of NaOH. The heating time and effect of different pH on the formation of GQDs have been studied in detail to optimize the reaction conditions. The UV-visible absorption and normalized fluorescence spectra have been applied to analyze the optical and luminescent properties of GQDs. The particles size distribution of the GQDs obtained from different organic acids at different pH has been also determined. The microstructures and surface morphology have been studied by atomic force microscope (AFM)