Controlled synthesis of large-area and patterned electrochemically reduced graphene oxide films

Ming Zhou, Yuling Wang, Yueming Zhai, Junfeng Zhai, Wen Ren, Fuan Wang, Shaojun Dong*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

657 Citations (Scopus)

Abstract

A study was conducted to demonstrate the first simple, efficient, low-cost, and environmentally friendly electrochemical method to produce electrochemically reduced graphene oxide (ER-GNO) film with an O/C ratio of less than 6.25%. The controllable synthesis of large-area and patterned ER-GNO films with thickness ranging from a single monolayer to several microns was achieved on various conductive and insulating substrates by coupling the method with a spray-coating technique. GNO slurry was obtained by the modified Hummers method that was used to fabricate GNO films on substrate surfaces by spray coating. Each spraying cycle consisted of a 1-s-long spray of a solution GNO and 20 s drying under an infrared lamp. GNO platelets froze upon contact with the substrate as the solvent underwent fast evaporation that combined small droplet size with rapid evaporation to avoid the concentration process that occurred upon slow solvent loss.

Original languageEnglish
Pages (from-to)6116-6120
Number of pages5
JournalChemistry - A European Journal
Volume15
Issue number25
DOIs
Publication statusPublished - 15 Jun 2009
Externally publishedYes

Keywords

  • Electrochemistry
  • Graphene oxide
  • Solid-state structures
  • Thin films

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