SYNTHESIS AND CHARACTERIZATION OF GRAPHENE QUANTUM DOTS FROM DRIED PINE LEAVES

Abstract

In this study, it was aimed to obtain graphene quantum dots (GQDs) from dried pine leaf (DPL) (peanut pine (Cedruslibani, Pinusnigra)). Decomposition temperatures of the dried pine leaf were determined by DTA-TGA analysis in nitrogen atmosphere. DPL was subjected to carbonization in an ash furnace for 6 hours in air, at temperatures of 250, 300, 350 0C. The materials obtained from the thermal process are characterized using FT-IR; XRD; SEM-EDAX; UV-VIS and Fluorescence spectrometer analysis. When dissolved in deionized water, these materials emits blue fluorescence under UV-A and UV-C excitation. The emission and excitation peaks are very sharp indicating an homogeneous particle distribution of GQDs’s in the water. When the analysis results were examined, it was observed that the substance obtained as a result of the carbonization process at 350 0C for 6 hours was compatible with GQDs data in the literature.

Keywords

• graphene quantum dots
• pine leaf
• carbonization