Pristine fullerene (C24) metals (Mo, Fe, Au) engineered nanostructured materials as an efficient electro-catalyst for hydrogen evolution reaction (HER): A density functional theory (DFT) study

Ernest C. Agwamba, Hitler Louis, Bartholomew B. Isang, Goodness J. Ogunwale, Onyinye J. Ikenyirimba, Adedapo S. Adeyinka

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The use of inexpensive, eco-friendly and earth-abundant transition metal-based carbon-based nanostructured materials for hydrogen evolution reaction (HER), has significantly increased. Hence, we examined the Mo-encapsulated, Fe-doped, and Au-decorated (AuFeMoC) dependent HER activity of C24 engineered nanostructured materials as an efficient electro-catalyst for HER using the density functional theory (DFT) approach at the PBE0/gen/6-311++G(d,p)/LanL2DZ level of theory. Our results revealed that AuFeMoC and FeMoC engineered surfaces show the strongest catalytic activity and are promising candidates for hydrogen production in Hydrogen evolution reaction (HER). Our calculations show that, after encapsulation, the Mo atom binds to the pristine C24 fullerene surface with a binding energy of −0.768 eV while stronger binding energy (−2.591 eV) is observed after doping the Mo-encapsulated fullerene (MoC) surface with Fe atom in the formation of engineered FeMoC. The calculated ΔGH values for H@AuFeMoC, H@FeMoC, H@MoC, and H@C is −0.0433, 0.1278, −0.0949, and −0.7920 eV, respectively. Based on the calculated ΔGH values, it is clear that H@AuFeMoC has the best catalytic activity of all engineered fullerene surfaces because it has ΔGH value closest to zero.

Original languageEnglish
Article number127374
JournalMaterials Chemistry and Physics
Volume297
DOIs
Publication statusPublished - 1 Mar 2023

Keywords

  • Catalyst
  • DFT
  • Engineered nanostructures
  • Fullerene
  • Hydrogen evolution reaction (HER)
  • Transition metals

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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