Nitrogen doped carbon nanotubes and nanofibers for green hydrogen production: Similarities in the nature of nitrogen species, metal–nitrogen interaction, and catalytic properties

Olga Podyacheva, Alexander Lisitsyn, Lidiya Kibis, Andrei Boronin, Olga Stonkus, Vladimir Zaikovskii, Arina Suboch, Vladimir Sobolev, Valentin Parmon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The effect of nitrogen doped bamboo-like carbon nanotubes (N–CNTs) on the properties of supported platinum (0.2 and 1 wt %) catalysts in formic acid decomposition for hydrogen production was studied. It was shown that both impregnation and homogeneous precipitation routes led to the formation of electron-deficient platinum stabilized by pyridinic nitrogen sites of the N–CNTs. The electron-deficient platinum species strongly enhanced the activity and selectivity of the Pt/N–CNTs catalysts when compared to the catalysts containing mainly metallic platinum nanoparticles. A comparison of bamboo-like N–CNTs and herring-bone nitrogen doped carbon nanofibers (N–CNFs) as the catalyst support allowed us to conclude that the catalytic properties of supported platinum are determined by its locally one-type interaction with pyridinic nitrogen sites of the N–CNTs or N–CNFs irrespective of substantial structural differences between nanotubes and nanofibers.

Original languageEnglish
Article number3976
JournalEnergies
Volume12
Issue number20
DOIs
Publication statusPublished - 18 Oct 2019

Keywords

  • Carbon nanofibers
  • Carbon nanotubes
  • Formic acid
  • Hydrogen
  • Nitrogen doped
  • Platinum
  • formic acid
  • THERMAL-STABILITY
  • FORMIC-ACID
  • ACTIVE-SITES
  • DEPOSITION
  • nitrogen doped
  • PLATINUM
  • NANOMATERIALS
  • hydrogen
  • FUTURE
  • NITRIDE
  • carbon nanofibers
  • NANOPARTICLES
  • platinum
  • carbon nanotubes
  • CLUSTERS

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