Scalable bottom-up synthesis of Co-Ni–doped graphene

Valeria Chesnyak, Daniele Perilli, Mirco Panighel, Alessandro Namar, Alexander Markevich, Thi Thuy An Bui, Aldo Ugolotti, Ayesha Farooq, Matus Stredansky, Clara Kofler, Cinzia Cepek, Giovanni Comelli, Jani Kotakoski, Cristiana Di Valentin, Cristina Africh (Corresponding author)

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Introducing heteroatoms into graphene is a powerful strategy to modulate its catalytic, electronic, and magnetic properties. At variance with the cases of nitrogen (N)– and boron (B)–doped graphene, a scalable method for incorporating transition metal atoms in the carbon (C) mesh is currently lacking, limiting the applicative interest of model system studies. This work presents a during-growth synthesis enabling the incorporation of cobalt (Co) alongside nickel (Ni) atoms in graphene on a Ni(111) substrate. Single atoms are covalently stabilized within graphene double vacancies, with a Co load ranging from 0.07 to 0.22% relative to C atoms, controllable by synthesis parameters. Structural characterization involves variable-temperature scanning tunneling microscopy and ab initio calculations. The Co- and Ni-codoped layer is transferred onto a transmission electron microscopy grid, confirming stability through scanning transmission electron microscopy and electron energy loss spectroscopy. This method holds pro
Original languageEnglish
Article numbereado8956
Number of pages8
JournalScience Advances
Volume10
Issue number45
DOIs
Publication statusPublished - 8 Nov 2024

Austrian Fields of Science 2012

  • 103018 Materials physics

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