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      TiO2-graphene nanocomposites. UV-assisted photocatalytic reduction of graphene oxide.

      1 , ,
      ACS nano
      American Chemical Society (ACS)

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          Abstract

          Graphene oxide suspended in ethanol undergoes reduction as it accepts electrons from UV-irradiated TiO(2) suspensions. The reduction is accompanied by changes in the absorption of the graphene oxide, as the color of the suspension shifts from brown to black. The direct interaction between TiO(2) particles and graphene sheets hinders the collapse of exfoliated sheets of graphene. Solid films cast on a borosilicate glass gap separated by gold-sputtered terminations show an order of magnitude decrease in lateral resistance following reduction with the TiO(2) photocatalyst. The photocatalytic methodology not only provides an on-demand UV-assisted reduction technique but also opens up new ways to obtain photoactive graphene-semiconductor composites.

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          Author and article information

          Journal
          ACS Nano
          ACS nano
          American Chemical Society (ACS)
          1936-086X
          1936-0851
          Jul 2008
          : 2
          : 7
          Affiliations
          [1 ] Radiation Laboratory, Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-0579, USA.
          Article
          10.1021/nn800251f
          10.1021/nn800251f
          19206319
          9d024b04-1b99-49c5-8a66-91c25314878f
          History

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