High catalytic activity of oriented 2.0.0 copper(I) oxide grown on graphene film.
Metal oxide nanoparticles supported on graphene exhibit high catalytic activity for oxidation, reduction and coupling reactions. Here we show that pyrolysis at 900 °C under inert atmosphere of copper(II) nitrate embedded in chitosan films affords 1.1.1 facet-oriented copper nanoplatelets supported on few-layered graphene. Oriented (1.1.1) copper nanoplatelets on graphene undergo spontaneous oxidation to render oriented (2.0.0) copper(I) oxide nanoplatelets on few-layered graphene. These films containing oriented copper(I) oxide exhibit as catalyst turnover numbers that can be three orders of magnitude higher for the Ullmann-type coupling, dehydrogenative coupling of dimethylphenylsilane with n-butanol and C-N cross-coupling than those of analogous unoriented graphene-supported copper(I) oxide nanoplatelets.
Departamento de Quimica, Instituto Universitario de Tecnología Química (CSIC-UPV), Avenida de los Naranjos S/N, 46022 Valencia, Spain.
Ana
A
Primo
Departamento de Quimica, Instituto Universitario de Tecnología Química (CSIC-UPV), Avenida de los Naranjos S/N, 46022 Valencia, Spain.
Ivan
I
Esteve-Adell
Departamento de Quimica, Instituto Universitario de Tecnología Química (CSIC-UPV), Avenida de los Naranjos S/N, 46022 Valencia, Spain.
Juan F
JF
Blandez
School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India.
Amarajothi
A
Dhakshinamoorthy
Departamento de Quimica, Instituto Universitario de Tecnología Química (CSIC-UPV), Avenida de los Naranjos S/N, 46022 Valencia, Spain.
Mercedes
M
Álvaro
Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest, Bulevardu Regina Elisabeta nr. 4-12, 030018 Bucharest, Romania.
Natalia
N
Candu
Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest, Bulevardu Regina Elisabeta nr. 4-12, 030018 Bucharest, Romania.
Simona M
SM
Coman
Department of Organic Chemistry, Biochemistry and Catalysis, University of Bucharest, Bulevardu Regina Elisabeta nr. 4-12, 030018 Bucharest, Romania.
Vasile I
VI
Parvulescu
Departamento de Quimica, Instituto Universitario de Tecnología Química (CSIC-UPV), Avenida de los Naranjos S/N, 46022 Valencia, Spain.
Hermenegildo
H
García