Nanostructured Cu and Cu@Cu2O core shell catalysts for hydrogen generation from ammonia–borane

Abstract

Copper nanoparticles have been prepared by the solvated metal atom dispersion (SMAD) method. Oxidation of the SMAD prepared copper colloids resulted in Cu@Cu(2)O core shell structures (7.7 +/- 1.8 nm) or Cu(2)O nanoparticles depending on the reaction conditions. The nano Cu, Cu@Cu(2)O core shell, and Cu(2)O particles were found to be catalytically active for the generation of hydrogen from ammonia-borane either via hydrolysis or methanolysis reaction.

One-step synthesis of magnetically recyclable Au/Co/Fe triple-layered core-shell nanoparticles as highly efficient catalysts for the hydrolytic dehydrogenation of ammonia borane

“…of hydrogen). It has been observed with many catalysts, for example, palladium black [27], platinum-and nickel-based alloys [40], and gold-, nickel-, and copper-based catalysts [12,41,42], that less than a stoichiometric amount of hydrogen is generated, arising from the incomplete hydrolysis of AB. High stability and easy recyclability are key requirements for practical catalysts.…”

Liquid‐Phase Chemical Hydrogen Storage: Catalytic Hydrogen Generation under Ambient Conditions

“…[69] Other catalysts, such as Cu, Cu/Cu2O, and PVP-stabilized Pd, have also been reported for the methanolysis of AB. [71,72] In conclusion, the hydrolysis of AB presents a high hydrogen capacity up to 8.9 wt % of the starting materials, AB and H 2 O, which is higher than that from its methanolysis. Moreover, hydrolysis of AB does not require a highly basic solution to stabilize the starting material AB, which is an advantage to the hydrolysis of NaBH 4 .…”

Analysis of Structure, Surface Morphology, Optical and Electrical Properties of Copper Nanoparticles

“…Owing to their small size and large surface area the metal nanoparticles have unique electronic, mechanical, magnetic and chemical properties that are different from those of bulk materials. For these reasons metallic nanoparticles have found applications in different fields such as electronic, thermal, catalysis, photonics, biosensors and optoelectronics [1][2][3][4].…”