Microwave exfoliation of graphite oxides in H2S plasma for the synthesis of sulfur-doped graphenes as oxygen reduction catalysts

Colin Hong An Wong, Zdeněk Sofer, Kateřina Klímová, Martin Pumera

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Tuning the electronic and chemical properties of graphene can be carried out through heteroatomic doping, enabling its use as an electrocatalyst. Sulfur-doped graphene has been suggested to be a viable alternative to traditional Pt-based catalysts for oxygen reduction under alkaline conditions. Herein we present a fast and efficient route to synthesize S-doped graphenes through the microwave-assisted exfoliation and reduction of three different graphite oxides in the presence of hydrogen sulfide. The materials obtained were characterized using scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, combustion elemental analysis, and voltammetry. These S-doped graphenes were found to have good electrochemical performance and were active in the catalysis of the oxygen reduction reaction.

Original languageEnglish
Pages (from-to)31849-31855
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number46
DOIs
Publication statusPublished - 2016 Nov 23

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Graphite
Sulfur
Oxides
Microwaves
Oxygen
Plasmas
Graphene
Catalysts
Hydrogen Sulfide
Electrocatalysts
Hydrogen sulfide
Voltammetry
Electronic properties
Chemical properties
Catalysis
Raman spectroscopy
X ray photoelectron spectroscopy
Tuning
Doping (additives)
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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Microwave exfoliation of graphite oxides in H2S plasma for the synthesis of sulfur-doped graphenes as oxygen reduction catalysts. / Wong, Colin Hong An; Sofer, Zdeněk; Klímová, Kateřina; Pumera, Martin.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 46, 23.11.2016, p. 31849-31855.

Research output: Contribution to journalArticle

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AU - Wong, Colin Hong An

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