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Pyrolysis of chitosan films containing Au3+ 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}}}...
Copper nanoparticles (NPs) supported on a series of undoped and doped graphene materials (Gs) have been obtained by pyrolysis of alginate or chitosan biopolymers, modified or not with boric acid, containing Cu2+ ions at 900 °C under inert atmosphere. The resulting Cu‐G materials containing about 17 wt % Cu NPs (from 10 to 200 nm) exhibit high catalytic activity for the dehydrogenative coupling of...
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