Heteroatom doped 3D graphene aerogel supported catalysts for formic acid and methanol oxidation

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Cogenli M. S., Yurtcan A.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.45, sa.1, ss.650-666, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 45 Sayı: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.ijhydene.2019.10.226
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chimica, Communication Abstracts, Compendex, Environment Index, INSPEC
  • Sayfa Sayıları: ss.650-666
  • Anahtar Kelimeler: Graphene aerogel, Heteroatom, Formic acid oxidation, Methanol oxidation, OXYGEN REDUCTION REACTION, HIGHLY-ACTIVE ELECTROCATALYSTS, IMPROVED CO TOLERANCE, CARBON NANOTUBES, ELECTROCHEMICAL IMPEDANCE, SURFACE-AREA, PALLADIUM NANOPARTICLES, 3-DIMENSIONAL NITROGEN, EFFICIENT ELECTROCATALYST, DOUBLE-LAYER
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, nitrogen (N) and boron (B) heteroatom doped graphene aerogel support materials have been employed for the dispersion of platinum (Pt) nanoparticles to improve their electrocatalytic activities for formic acid and methanol oxidation. Pt nanoparticles dispersed on the heteroatom doped graphene aerogel (GA) support materials by a microwave heating method. The as-prepared catalysts were characterized by a variety of means such as SEM, EDS, ICP-MS, TEM, XRD, BET and XPS. The electrocatalytic activities, stability and impedance of the synthesized catalysts were investigated for formic acid and methanol oxidation using electrochemical measurements. The 3D graphene aerogels have higher capacitive currents than the Vulcan XC-72 in the double layer region. The results of electrochemical chronoamperometry tests reveal that Pt/BGA shows the best stability for methanol oxidation and also exhibited superior electrocatalytic activity towards the oxidation of methanol in cyclic voltammetry. In addition to, heteroatom doped GA supported catalysts higher activity compared to the Vulcan XC-72 supported catalyst for formic acid oxidation. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.