Synergistic Pd and Bi decoration on g-C3N4: Toward high-performance glycerol fuel cell anode catalyst

Oruç M., Ecer Ü., Yayla S., Ulaş B.

Materials Science and Engineering: B, cilt.323, 2026 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 323
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.mseb.2025.118698
  • Dergi Adı: Materials Science and Engineering: B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Anode catalyst, Characterization, Glycerol electrooxidation, Graphitic carbon nitride, Nanoparticle
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

Glycerol electrooxidation (GEOR) in an alkaline medium was assessed using graphitic carbon nitride (g-C3N4)-supported PdBi bimetallic catalysts with different atomic ratios that were created using a NaBH4 reduction technique. The catalysts were comprehensively characterized by Inductively coupled plasma mass spectrometry (ICP-MS), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), N2 adsorption–desorption, Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM-EDX), and elemental mapping, and electrochemical techniques namely cyclic voltammetry (CV), chronoamperometry (CA), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). Pd70Bi30/g-C3N4 had the best electrocatalytic performance among the synthesized catalysts, with the lowest onset potential (–0.31 V), the lowest charge transfer resistance, and the highest specific/mass activity (9.60 mA/cm2 and 180.8 mA/mgPd). Pd and Bi's synergistic interaction, the optimal d-band center position, and the efficient dispersion of nanoparticles on g-C3N4 were all credited with the increased activity. These findings show how atomic ratio tweaking and support material selection can be used to create high-performance anode catalysts for direct glycerol fuel cells (DGFCs).