Synthesis of nitrogen-doped graphene via simple microwave-hydrothermal process

Il To Kim, Moo Whan Shin

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In this letter we demonstrate successful application of the microwave-hydrothermal method to the synthesis of nitrogen-doped graphene. The processing time is significantly reduced compared to previously proposed methods as a result of rapid heating by microwave radiation involving agitation of polar molecules and oscillation of ions. Nitrogen-doped graphene has been synthesized from graphene oxide (GO) via microwave-hydrothermal process in ammonia solution. We investigated the chemical composition and bonding configuration of inserted nitrogen atoms in graphene layers synthesized in different microwave treatment time. From the analysis of chemical composition, we found that nitrogen doping is achieved simultaneously with the oxygen reduction process. With increasing synthesis time, nitrogen doping concentration increased to 6.13 at% and oxygen composition rapidly decreased due to oxygen reduction. Moreover, we also show enhanced formation of pyridinic-N atom.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalMaterials Letters
Volume108
DOIs
Publication statusPublished - 2013 Jul 23

Fingerprint

Graphite
Graphene
graphene
Nitrogen
Microwaves
microwaves
nitrogen
synthesis
Oxygen
chemical composition
oxygen
agitation
Chemical analysis
Doping (additives)
Atoms
nitrogen atoms
ammonia
Ammonia
Oxides
oscillations

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

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Synthesis of nitrogen-doped graphene via simple microwave-hydrothermal process. / Kim, Il To; Shin, Moo Whan.

In: Materials Letters, Vol. 108, 23.07.2013, p. 33-36.

Research output: Contribution to journalArticle

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AB - In this letter we demonstrate successful application of the microwave-hydrothermal method to the synthesis of nitrogen-doped graphene. The processing time is significantly reduced compared to previously proposed methods as a result of rapid heating by microwave radiation involving agitation of polar molecules and oscillation of ions. Nitrogen-doped graphene has been synthesized from graphene oxide (GO) via microwave-hydrothermal process in ammonia solution. We investigated the chemical composition and bonding configuration of inserted nitrogen atoms in graphene layers synthesized in different microwave treatment time. From the analysis of chemical composition, we found that nitrogen doping is achieved simultaneously with the oxygen reduction process. With increasing synthesis time, nitrogen doping concentration increased to 6.13 at% and oxygen composition rapidly decreased due to oxygen reduction. Moreover, we also show enhanced formation of pyridinic-N atom.

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