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Reversible Electrical Reduction and Oxidation of Graphene Oxide

Ekiz, Okan Oner; Urel, Mustafa; Guner, Hasan; Mizrak, Alpay Koray; Dana, Aykutlu


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{
  "DOI": "10.1021/nn1014215", 
  "abstract": "We demonstrate that graphene oxide can be reversibly reduced and oxidized using electrical stimulus. Controlled reduction and oxidation in two-terminal devices containing multilayer graphene oxide films are shown to result in switching between partially reduced graphene oxide and graphene, a process which modifies the electronic and optical properties. High-resolution tunneling current and electrostatic force imaging reveal that graphene oxide islands are formed on multilayer graphene, turning graphene into a self-assembled heterostructure random nanomesh. Charge storage and resistive switching behavior is observed in two-terminal devices made of multilayer graphene oxide films, correlated with electrochromic effects. Tip-induced reduction and oxidation are also demonstrated. Results are discussed in terms of thermodynamics of oxidation and reduction reactions.", 
  "author": [
    {
      "family": "Ekiz", 
      "given": " Okan Oner"
    }, 
    {
      "family": "Urel", 
      "given": " Mustafa"
    }, 
    {
      "family": "Guner", 
      "given": " Hasan"
    }, 
    {
      "family": "Mizrak", 
      "given": " Alpay Koray"
    }, 
    {
      "family": "Dana", 
      "given": " Aykutlu"
    }
  ], 
  "container_title": "ACS NANO", 
  "id": "22755", 
  "issue": "4", 
  "issued": {
    "date-parts": [
      [
        2011, 
        1, 
        1
      ]
    ]
  }, 
  "page": "2475-2482", 
  "title": "Reversible Electrical Reduction and Oxidation of Graphene Oxide", 
  "type": "article-journal", 
  "volume": "5"
}
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