Inside-out core–shell architecture: controllable fabrication of Cu2O@Cu with high activity for the Sonogashira coupling reaction

Abstract

Inside-out core-shell architectures (Cu(2)O@Cu) with a Cu(2)O core and a Cu shell, which are in contrast to the normally reported Cu(2)O-outside structure (Cu@Cu(2)O), were fabricated. This strategy can also be applied to construct square and hexapod Cu(2)O@Cu. The obtained Cu(2)O@Cu composite exhibits excellent catalytic activity for the Sonogashira coupling reactions.

Core–shell nanoparticles: synthesis and applications in catalysis and electrocatalysis

“…Sonogashira coupling reaction catalyzed by inside-out type core-shell nanoparticles. 365 Their facile solution-phase synthetic strategy generated Cu on the outside, producing Cu 2 O@Cu type CSNs (cf., the more commonly reported material is Cu@Cu 2 O) (Fig. 362 There are many examples in the literatures of this class of reaction, catalyzed by various metalcontaining nanomaterials, including CSNs.…”

“…362 There are many examples in the literatures of this class of reaction, catalyzed by various metalcontaining nanomaterials, including CSNs. 365 The Cu 2 O@Cu CSNs were found to successfully catalyze Sonogashira coupling reactions between aryl iodides and phenylacetylenes to afford the corresponding biarylacetylenes in excellent yields (85-94%) (Fig. 365 Their facile solution-phase synthetic strategy generated Cu on the outside, producing Cu 2 O@Cu type CSNs (cf., the more commonly reported material is Cu@Cu 2 O) (Fig.…”

Microwave‐Assisted Synthesis of Dual‐Conducting Cu2O@Cu–Graphene System with Improved Electrochemical Performance as Anode Material for Lithium Batteries

“…[34,35] In the mi-crowave-assisted reaction system, spherical Cu 2 O particles are first formed using ascorbic acid as reducing agent in ethanol. [34,35] In the mi-crowave-assisted reaction system, spherical Cu 2 O particles are first formed using ascorbic acid as reducing agent in ethanol.…”

Cu‐Based Nanocomposites as Multifunctional Catalysts

“…[22][23][24][25] Copper-based nanostructured materials offer av iable option as electrocatalysts for producing hydrogen, as compared with other precious-metal-based nanostructured electrocatalysts, due to their low cost and wide availability.C u/Cu 2 On anocomposites have been shown to be of importance in photocatalysis, [26,27] electrocatalysis, [28,29] organic synthesis, [30,31] sensors [32] and as optical [33] and biocompatible [34] materials. [22][23][24][25] Copper-based nanostructured materials offer av iable option as electrocatalysts for producing hydrogen, as compared with other precious-metal-based nanostructured electrocatalysts, due to their low cost and wide availability.C u/Cu 2 On anocomposites have been shown to be of importance in photocatalysis, [26,27] electrocatalysis, [28,29] organic synthesis, [30,31] sensors [32] and as optical [33] and biocompatible [34] materials.…”