In:
Angewandte Chemie, Wiley, Vol. 128, No. 2 ( 2016-01-11), p. 617-622
Kurzfassung:
Pyrolysis of chitosan films containing Au 3+ renders 1.1.1 oriented Au nanoplatelets (20 nm lateral size, 3–4 nm height) on a few layers of N‐doped graphene ( ${\overline {{\rm{Au}}} }$ /fl‐G), while the lateral sides were 0.0.1 oriented. Comparison of the catalytic activity of ${\overline {{\rm{Au}}} }$ /fl‐G films with powders of unoriented Au NPs supported on graphene showed that ${\overline {{\rm{Au}}} }$ /fl‐G films exhibit six orders of magnitude enhancement for three gold‐catalyzed reactions, namely, Ullmann‐like homocoupling, CN cross coupling, and the oxidative coupling of benzene to benzoic acid. This enhancement is the result of the defined morphology, facet orientation of Au nanocrystals, and strong gold‐graphene interaction.
Materialart:
Online-Ressource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.201508908
Sprache:
Deutsch
Verlag:
Wiley
Publikationsdatum:
2016
ZDB Id:
505868-5
ZDB Id:
506609-8
ZDB Id:
514305-6
ZDB Id:
505872-7
ZDB Id:
1479266-7
ZDB Id:
505867-3
ZDB Id:
506259-7
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