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      One-step synthesis of Pt-reduced graphene oxide composites based on high-energy radiation technique Translated title: Synthese von Pt-reduziertem Graphenoxid auf der Basis hochenergetischer Strahlungsverfahren

      1 , 1, , * , , 1 , 1
      Carl Hanser Verlag

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          In this paper, we introduce a novel 60Co-ray-irradiation-based one-step synthesis method of Pt-reduced graphene oxide composites (Pt-RGO) in acid aqueous solution. The compositional distribution of the particles in the samples was characterized by transmission electron microscopy. The structure and composition of the nanocomposite has been determined with a scanning electron microscope (SEM) equipped with an energy dispersion X-ray (EDS) analyzer. Surface enhanced Raman scattering (SERS) of graphene deposited by the Pt nanoparticles were investigated with the 514.5 nm excitation. It was found that small-sized and highly-dispersed Pt nanoparticles could easily grow on the RGO surface under acidic conditions. In addition, the obtained homogeneous dispersions exhibit long-term stability, which will facilitate the production of homogeneous composites.


          In der vorliegenden Arbeit wird eine neue Methode für die Synthese von Pt-reduziertem Graphenoxid (Pt-RGO) in saurer, wässriger Lösung vorgestellt. Die zusammengesetzte Verteilung der Teilchen in der Probe wurde mit Hilfe der Transmissionselektronenmikroskopie bestimmt. Struktur und Zusammensetzung der Nanoverbundwerkstoffe (Nanokomposite) wurde mit einem Rasterelektronenmikroskop, ausgestattet mit einem energiedispersiven Röntgenspektrometer bestimmt. Oberflächen-verstärkte Raman-Streuung des durch die Pt-Nanopartikel abgelagerten Graphens wurde mit Hilfe der 514,5 nm Anregung untersucht. Dabei stellte sich heraus, dass kleine und hochdispersive Pt-Nanopartikel unter sauren Bedingungen auf der RGO-Oberfläche leicht wachsen. Zusätzlich erwiesen sich die erhaltenen homogenen Dispersionen als langfristig stabil, was die Herstellung homogener Komposite erleichtern wird.

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          Most cited references11

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          Is Open Access

          Electric Field Effect in Atomically Thin Carbon Films

          We report a naturally-occurring two-dimensional material (graphene that can be viewed as a gigantic flat fullerene molecule, describe its electronic properties and demonstrate all-metallic field-effect transistor, which uniquely exhibits ballistic transport at submicron distances even at room temperature.
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            Is Open Access

            Co3O4 Nanocrystals on Graphene as a Synergistic Catalyst for Oxygen Reduction Reaction

            Catalysts for oxygen reduction and evolution reactions are at the heart of key renewable energy technologies including fuel cells and water splitting. Despite tremendous efforts, developing oxygen electrode catalysts with high activity at low costs remains a grand challenge. Here, we report a hybrid material of Co3O4 nanocrystals grown on reduced graphene oxide (GO) as a high-performance bi-functional catalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). While Co3O4 or graphene oxide alone has little catalytic activity, their hybrid exhibits an unexpected, surprisingly high ORR activity that is further enhanced by nitrogen-doping of graphene. The Co3O4/N-doped graphene hybrid exhibits similar catalytic activity but superior stability to Pt in alkaline solutions. The same hybrid is also highly active for OER, making it a high performance non-precious metal based bi-catalyst for both ORR and OER. The unusual catalytic activity arises from synergetic chemical coupling effects between Co3O4 and graphene.
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              Graphene based new energy materials


                Author and article information

                Carl Hanser Verlag
                26 June 2014
                : 79
                : 3
                : 216-218
                1 64 Mianshan Rd, Youxian District, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621910, Sichuan, China
                Author notes
                [* ] Corresponding author: E-mail: naciky210@ 123456gmail.com
                © 2014, Carl Hanser Verlag, München
                : 31 January 2014
                Page count
                References: 17, Pages: 3
                Self URI (journal page): https://www.hanser-elibrary.com/loi/kt
                Technical Contributions/Fachbeiträge

                Materials technology,Materials for energy,Nuclear physics
                Materials technology, Materials for energy, Nuclear physics


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