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Graphene quantum dots prepared from dried lemon leaves and microcrystalline mosaic structure
Author(s) -
Kir Şifa,
Dehri İlyas,
Önal Yunus,
Esen Ramazan
Publication year - 2021
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.4060
Subject(s) - carbonization , microcrystalline , graphene , fourier transform infrared spectroscopy , materials science , scanning electron microscope , fluorescence , analytical chemistry (journal) , quantum dot , spectroscopy , nuclear chemistry , chemistry , crystallography , nanotechnology , chromatography , optics , composite material , physics , quantum mechanics
The aim of this study is to obtain graphene quantum dots (GQDs) by using Citrus limonum leaves grown in Adana Province, Mediterranean region. Thus, dried Citrus limonum leaves were subjected to carbonization at temperatures of 200, 275, 350, 425 and 500°C and 90, 180, and 270 min respectively at each temperature. Characterization of the material obtained at the end of the process was determined by using X‐ray diffraction (XRD), Fourier‐transform infrared (FT‐IR), fluorescence spectroscopy, elemental analyzer, scanning electron microscopy (SEM), ultraviolet (UV)‐visible, UV‐A and UV‐C lamps. It was determined that the samples obtained in the carbonization process carried out at 350 and 425°C for 3 h made blue colored fluorescence. The results of the experiments completed for characterization analysis verified the GQDs and mosaic crystal structure compared to the literature. It was observed that the GQDs obtained at 350°C for 3 h had maximum fluorescence properties. Radical changes at the sample matrix was observed when carbonization temperature changed from 350°C to 425°C.