Uranium- and thorium-doped graphene for efficient oxygen and hydrogen peroxide reduction

Zdeněk Sofer, Ondřej Jankovský, Petr Šimek, Kateřina Klímová, Anna Macková, Martin Pumera

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Oxygen reduction and hydrogen peroxide reduction are technologically important reactions in the fields of energy generation and sensing. Metal-doped graphenes, where metal serves as the catalytic center and graphene as the high area conductor, have been used as electrocatalysts for such applications. In this paper, we investigated the use of uranium-graphene and thorium-graphene hybrids prepared by a simple and scalable method. The hybrids were synthesized by the thermal exfoliation of either uranium- or thorium-doped graphene oxide in various atmospheres. The synthesized graphene hybrids were characterized by high-resolution XPS, SEM, SEM-EDS, combustible elemental analysis, and Raman spectroscopy. The influence of dopant and exfoliation atmosphere on electrocatalytic activity was determined by electrochemical measurements. Both hybrids exhibited excellent electrocatalytic properties toward oxygen and hydrogen peroxide reduction, suggesting that actinide-based graphene hybrids have enormous potential for use in energy conversion and sensing devices.

Original languageEnglish
Pages (from-to)7106-7114
Number of pages9
JournalACS Nano
Volume8
Issue number7
DOIs
Publication statusPublished - 2014 Jul 22

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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