Supercapacitor behaviors of carbon quantum dots by green synthesis method from tea fermented with kombucha

Baslak C., Demirel S., KOÇYİĞİT A., Alatli H., Yildirim M.

Materials Science in Semiconductor Processing, cilt.147, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 147
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.mssp.2022.106738
  • Dergi Adı: Materials Science in Semiconductor Processing
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex
  • Anahtar Kelimeler: Carbon quantum dots, Electrode materials, Kombucha fungus, Supercapacitors
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

© 2022 Elsevier LtdQuantum dots have good optical and electronic behaviors due to their smaller size and having changeable properties depending on the size owing to quantum confinement effect. They can be used in various applications such as solar cells, drug delivery, displays and supercapacitors. In this study, carbon quantum dots (CQD) with nitrogen containing have been synthesized by green synthesize technique from the Kombucha fungus and characterized by HRTEM, XRD, XPS, particle sizer, luminescence and UV–Vis spectrometers. While the XRD results confirmed the crystalline structure of the CQDs, HRTEM results revealed the size of CQDs as 5 nm. The luminescence spectroscopy results showed blue-green emission. The UV–Vis spectrometer affirmed absorption peaks of the carbon at around 250–330 nm wavelengths. The CQDs were used as electrode materials for supercapacitor structure and characterized by electrochemical analysis to determine charge-discharge profiles and capacity. The results revealed that the green synthesized CQDs can be employed and improved for supercapacitor applications.