TY - JOUR
T1 - Scalable bottom-up synthesis of Co-Ni–doped graphene
AU - Chesnyak, Valeria
AU - Perilli, Daniele
AU - Panighel, Mirco
AU - Namar, Alessandro
AU - Markevich, Alexander
AU - Bui, Thi Thuy An
AU - Ugolotti, Aldo
AU - Farooq, Ayesha
AU - Stredansky, Matus
AU - Kofler, Clara
AU - Cepek, Cinzia
AU - Comelli, Giovanni
AU - Kotakoski, Jani
AU - Di Valentin, Cristiana
AU - Africh, Cristina
PY - 2024/11/8
Y1 - 2024/11/8
N2 - 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
AB - 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
UR - http://www.scopus.com/inward/record.url?scp=85209408307&partnerID=8YFLogxK
U2 - 10.1126/sciadv.ado8956
DO - 10.1126/sciadv.ado8956
M3 - Article
SN - 2375-2548
VL - 10
JO - Science Advances
JF - Science Advances
IS - 45
M1 - eado8956
ER -