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Nano Research

, Volume 11, Issue 3, pp 1589–1598 | Cite as

Size contrast of Pt nanoparticles formed on neighboring domains within suspended and supported graphene

  • Dario Roccella
  • Matteo Amati
  • Hikmet Sezen
  • Rosaria Brescia
  • Luca GregorattiEmail author
Research Article

Abstract

The relatively small size of thin (one or few layers) graphene flakes makes it extremely difficult to study the behavior of suspended graphene by characterization techniques other than the electron microscopies. Herein, we exploited the capability of spatially resolved photoemission in combination with high resolution transmission electron microscopy to investigate the interaction of thermally evaporated Pt atoms on suspended and supported graphene. Spectroscopic and microscopic analyses reveal that the nucleation of nanometersized Pt particles in these two regions exhibit different trends. While only small nanometer-sized islands are present on the supported graphene, relatively larger clusters of islands were also found on the suspended flakes. The X-ray photoemission C 1s core levels acquired after the Pt deposition show an increase in the number of vacancies in the graphene sheets.

Keywords

graphene X-ray photoemission spectroscopy scanning photoelectron microscopy nanoparticles platinum suspended films 

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Notes

Acknowledgements

We would like to thank all the technical staff of Elettra for the support in the sample and experiment preparation.

Supplementary material

12274_2017_1774_MOESM1_ESM.pdf (1 mb)
Size contrast of Pt nanoparticles formed on neighboring domains within suspended and supported graphene

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Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany 2018

Authors and Affiliations

  • Dario Roccella
    • 1
  • Matteo Amati
    • 2
  • Hikmet Sezen
    • 2
  • Rosaria Brescia
    • 3
  • Luca Gregoratti
    • 2
    Email author
  1. 1.Università degli Studi di Genova - Facoltà di Scienze Matematiche, Fisiche e NaturaliGenovaItaly
  2. 2.Elettra – Sincrotrone Trieste S.C.p.A. in Area Science ParkTriesteItaly
  3. 3.Electron Microscopy FacilityIstituto Italiano di Tecnologia (IIT)GenovaItaly

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