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

Autor(en)

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

Abstrakt

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

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Università degli Studi di Trieste, Consiglio Nazionale delle Ricerche, Università degli Studi di Milano-Bicocca

Journal

Science Advances

Band

10

Anzahl der Seiten

8

ISSN

2375-2548

DOI

https://doi.org/10.1126/sciadv.ado8956

Publikationsdatum

11-2024

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0bdd9fcd-2cea-4fde-b766-97135748a14e