Metal permeation into multi-layered graphene oxide

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

doi:10.1038/srep03647

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

Laboratory of Advanced Material

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

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 language	English
Article number	3647
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep03647
Publication status	Published - 13 Jan 2014

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title = "Metal permeation into multi-layered graphene oxide",

abstract = "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.",

author = "Chikako Ogata and Michio Koinuma and Kazuto Hatakeyama and Hikaru Tateishi and Asrori, {Mohamad Zainul} and Takaaki Taniguchi and Asami Funatsu and Yasumichi Matsumoto",

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AU - Ogata, Chikako

AU - Koinuma, Michio

AU - Hatakeyama, Kazuto

AU - Tateishi, Hikaru

AU - Asrori, Mohamad Zainul

AU - Taniguchi, Takaaki

AU - Funatsu, Asami

AU - Matsumoto, Yasumichi

PY - 2014/1/13

Y1 - 2014/1/13

N2 - 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.

AB - 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.

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Metal permeation into multi-layered graphene oxide

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