Research on multimetallic nanoparticles has generated immerse interest due to the synergistic effect and structure-property relationship that can be utilized for various applications. This presentation discusses a microwave-assisted synthesis of anisotropic copper-based nanostructures via a combination of benign reducing and capping agent. We choose copper because it is inexpensive and is a valuable constituent in heterogeneous catalysis. To overcome the propensity of surface oxidation of copper, we combined copper with silver via a wet chemical synthesis. When silver ions were reduced on preformed copper nanoparticles at hydrothermal temperature, spherical copper-silver nanoparticles were formed. Simultaneous reduction of copper ions and silver ions at the same hydrothermal temperature produced anisotropic nanoparticles. We examined the size, morphology, and composition of the nanoparticles via TEM, STEM-EDS and XPS. Implications of the results to the exploration of bifunctional catalysts in the electrocatalytic reduction of CO<sub>2</sub> to value-added products will be discussed.

Microwave-assisted synthesis of anisotropic copper-based nanoparticles

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