Synthesis and characterization of graphene-based electrocatalysts for the detection of damaged starch ratio


Yıldırım N., TAPAN N. A.

Fullerenes Nanotubes and Carbon Nanostructures, cilt.33, sa.7, ss.699-713, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 7
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1080/1536383x.2024.2449066
  • Dergi Adı: Fullerenes Nanotubes and Carbon Nanostructures
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Sayfa Sayıları: ss.699-713
  • Anahtar Kelimeler: damaged starch, Exfoliated graphene, iodine, UCD
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, the detection of damaged starch ratio on synthesized graphene-based electrocatalysts were evaluated based on the iodine oxidation mechanism. Electrocatalysts were synthesized by three different electrochemical exfoliation techniques. Synthesized catalysts were tested in a three-electrode system with electrolytes mixed with flours at different damaged starch ratios (at 16.5, 25 and 30 UCD values). For the electrochemical tests related to iodine absorption, electrolyte solutions were prepared according to Medcalf and Gilles principle; cyclic voltammetry and chronoamperometry were performed at 50 mV/s in the range of 0–1 V vs. SCE; and at a potential of 1 V vs. SCE. The synthesized catalysts showed reversible reaction properties by giving anodic and cathodic peaks of iodine in the three-electrode system. The exfoliated graphene samples were characterized via standard tools such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman and UV-vis spectroscopy. After all, it was seen that the G2 type electrocatalyst has the highest sensitivity to iodine absorption and potential for use in damaged starch detection.