Synthesis of Cu/Cu2O core/multi-shelled microcrystal via shape and structure transformation of pre-grown crystals

Controlled and stepwise generation of Cu2O, Cu2O@Cu and Cu nanoparticles inside the transparent alumina films and their catalytic activity

“…22,23 Another report showed the conversion of hydrothermally synthesized Cu 2 O to Cu 2 O@Cu particles having size of 5-6 microns by increasing the aging time of the reaction mixture. 24 Besides these solution based synthetic protocols, formation of Cu 2 O and Cu 2 O@Cu NPs in a dielectric film matrix is not reported in the literature. The semiconductor coremetal shell composite NPs are of increasing scientific and technological interest due to an expanding and wide range of applications.…”

Preparation of Cu2O and Cu2O@Cu Core-Shell Nanostructures by a Simple Chemical Technique

“…The structural and optical studies showed the nanoparticles prepared at room temperature is phase pure crystalline Cu2O material with band gap energy of 2.08 eV. [2,3]. The elemental Cu as a shell has been reported to play a crucial role in many reactions due to its high activity.…”

“…[1]. Various core-shell nanostructures have been obtained previously by Kirkendall effect and Ostwald ripening process [2,3]. The elemental Cu as a shell has been reported to play a crucial role in many reactions due to its high activity.…”

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

“…5,7,[10][11][12] In general, sacrificial templatedirected chemical transformation, based on the Kirkendall effect, is an effective approach to fabricate core-shell structures. 7,13 This method, in combination with oxidative reactions of Cu, has been widely used to generate Cu 2 O-outside core-shell structure with a Cu core and a Cu 2 O shell (Cu@Cu 2 O). 5,7,[11][12][13][14][15] However, in contrast to oxidation that can be easily realized by various methods, the light transition metal Cu is difficult to obtain via the reduction of Cu oxides in solution.…”

“…7,13 This method, in combination with oxidative reactions of Cu, has been widely used to generate Cu 2 O-outside core-shell structure with a Cu core and a Cu 2 O shell (Cu@Cu 2 O). 5,7,[11][12][13][14][15] However, in contrast to oxidation that can be easily realized by various methods, the light transition metal Cu is difficult to obtain via the reduction of Cu oxides in solution. 5,7,[10][11][12] As a result, it is a challenging task to fabricate the Cu-outside structure with a Cu 2 O core and a Cu shell (Cu 2 O@Cu), the inside-out construction of the usually reported Cu 2 O-outside Cu@Cu 2 O.…”