High catalytic activity of oriented 2.0.0 copper(I) oxide grown on graphene film

Ana Primo, Ivan Esteve-Adell, Juan F. Blandez, Amarajothi Dhakshinamoorthy, Mercedes Álvaro, Natalia Candu, Simona M. Coman, Vasile I. Parvulescu () and Hermenegildo García ()
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Ana Primo: Instituto Universitario de Tecnología Química (CSIC-UPV)
Ivan Esteve-Adell: Instituto Universitario de Tecnología Química (CSIC-UPV)
Juan F. Blandez: Instituto Universitario de Tecnología Química (CSIC-UPV)
Amarajothi Dhakshinamoorthy: School of Chemistry, Madurai Kamaraj University, Madurai
Mercedes Álvaro: Instituto Universitario de Tecnología Química (CSIC-UPV)
Natalia Candu: Biochemistry and Catalysis, University of Bucharest
Simona M. Coman: Biochemistry and Catalysis, University of Bucharest
Vasile I. Parvulescu: Biochemistry and Catalysis, University of Bucharest
Hermenegildo García: Instituto Universitario de Tecnología Química (CSIC-UPV)

Nature Communications, 2015, vol. 6, issue 1, 1-11

Abstract: Abstract 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.

Date: 2015
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DOI: 10.1038/ncomms9561

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