Graphene quantum dots prepared from dried lemon leaves and microcrystalline mosaic structure

Kir S., DEHRİ İ., ÖNAL Y., ESEN R.

LUMINESCENCE, cilt.36, sa.6, ss.1365-1376, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 6
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1002/bio.4060
  • Dergi Adı: LUMINESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Analytical Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Communication Abstracts, EMBASE, INSPEC, MEDLINE, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1365-1376
  • Anahtar Kelimeler: biomass, carbonization, Citrus limonum leaves, graphene quantum dots, microcrystalline mosaic structure, CARBON NANODOTS, SENSOR, CARBONIZATION
  • İnönü Üniversitesi Adresli: Evet

Özet

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 degrees 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 degrees 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 degrees C for 3 h had maximum fluorescence properties. Radical changes at the sample matrix was observed when carbonization temperature changed from 350 degrees C to 425 degrees C.