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

作者：Primo Ana; Esteve Adell Ivan; Blandez Juan F; Dhakshinamoorthy Amarajothi; Alvaro Mercedes; Candu Natalia; Coman Simona M; Parvulescu Vasile I; Garcia Hermenegildo^*

来源：Nature Communications, 2015, 6(1): 8561.

DOI：10.1038/ncomms9561

Metal oxide nanoparticles supported on graphene exhibit high catalytic activity for oxidation, reduction and coupling reactions. Here we show that pyrolysis at 900 degrees 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.

• 出版日期2015-10