Role of thickness and intercalated water in the facile reduction of graphene oxide employing camera flash

Saswata Bose, Lawrence T. Drzal

Research output: Contribution to journalArticle

  • 4 Citations

Abstract

Graphene oxide (GO) is a potential precursor for the bulk production of graphene as the synthetic route is simple and cost-effective. Typically, reduction of GO is a time-consuming process and involves either toxic/hazardous reducing agents or high temperature treatment. Herein, we report the role of intercalated water and thickness of GO films towards the reduction of GO employing simple camera flash. A fast, simple and single camera flash instantaneously causes the deoxygenation reaction of GO without employing hazardous/toxic chemical reductants at room temperature. Successful reduction of GO employing camera flash has been verified via XRD, Raman and UV-vis spectroscopic analyses. Flash-reduced graphene shows a relatively high conductivity value of 740 S m-1 with a C/O ratio of around 9.5. Intercalated water molecules facilitate the reduction by electron-hole pair formation. It has also been found that the intercalated water facilitates the reduction of GO up to a certain film thickness. However, the intensity of light passing through to the backside of a too thick film decreases significantly, causing incomplete reduction.

LanguageEnglish (US)
Article number075702
JournalNanotechnology
Volume25
Issue number7
DOIs
StatePublished - Feb 21 2014

Profile

Graphite
Oxides
Graphene
Cameras
Water
Poisons
Reducing Agents
Reducing agents
Thick films
Oxide films
Film thickness
Temperature
Molecules
Electrons

Keywords

  • Electron-hole pair
  • Flash reduction
  • Graphene oxide
  • Intercalated water

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Role of thickness and intercalated water in the facile reduction of graphene oxide employing camera flash. / Bose, Saswata; Drzal, Lawrence T.

In: Nanotechnology, Vol. 25, No. 7, 075702, 21.02.2014.

Research output: Contribution to journalArticle

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