Metal permeation into multi-layered graphene oxide

Chikako Ogata, Michio Koinuma*, Kazuto Hatakeyama, Hikaru Tateishi, Mohamad Zainul Asrori, Takaaki Taniguchi, Asami Funatsu, Yasumichi Matsumoto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Understanding the chemical and physical properties of metal/graphene oxide (M/GO) interfaces is important when GO is used in electronic and electrochemical devices because the metal layer must be firmly attached to GO. Here, permeation of metal from the surface into GO paper bulk at the M/GO interface was observed at room temperature for metals such as Cu, Ag, Ni, Au, and Pt. Cu, Ag, and Ni quickly permeated GO as ions into the bulk under humid conditions. At first, these metals changed to hydrated ions as a result of redox reactions (with reduction of GO) at the surface, and then permeated the interlayers. Au and Pt were observed to permeate GO as atoms into the GO bulk at room temperature, although the permeation rates were low. These surprising results are considered to be due to the presence of many defects and/or edges with oxygenated groups in the GO paper.

Original languageEnglish
Article number3647
JournalScientific Reports
Publication statusPublished - 13 Jan 2014


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