Orange Peel Derived-Nitrogen and Sulfur Co-doped Carbon Dots: a Nano-booster for Enhancing ORR Electrocatalytic Performance of 3D Graphene Networks

KARAMAN C.

ELECTROANALYSIS, cilt.33, sa.5, ss.1356-1369, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 5
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1002/elan.202100018
  • Dergi Adı: ELECTROANALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, BIOSIS, Chemical Abstracts Core, Chimica, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.1356-1369
  • Anahtar Kelimeler: Carbon dots, three dimensional graphene, oxygen reduction reaction, electrocatalyst, heteroatom doped
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Herein, nitrogen, sulfur co-doped carbon dots (N,S-CDs) have been synthesized by a cost-natural fabrication method using waste orange-peel as a natural-carbon-precursor. N,S-CDs have been hydrothermally anchored to the three-dimensional-graphene-networks (3D-GNs) to boost the electrocatalytic activity by a defective surface effect. Due to the synergistic utilization of heteroatoms, and effective mass-transfer and improved transport kinetics resulting from interconnected 3D-architecture, N,S-CDs anchored 3D-GNs (N,S-CDs@3D-GNs) grant superior oxygen-reduction-reaction (ORR) activity. N,S-CDs@3D-GNs exhibit a dominant four-electron pathway (n=3.89) for ORR in alkaline media besides superior methanol tolerance and robust stability. This work opens a door for converting low-value agricultural wastes into value-added materials for utilizing in energy application.