Synthesis of copper hydroxide branched nanocages and their transformation to copper oxide
AuthorsLaGrow, Alec P.
Elshewy, Ahmed M.
Kirmani, Ahmad R.
Anjum, Dalaver H.
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
KAUST Solar Center (KSC)
KAUST Catalysis Center (KCC)
Advanced Nanofabrication, Imaging and Characterization Core Lab
Materials Science and Engineering Program
Chemical Science Program
Organic Electronics and Photovoltaics Group
Functional Nanomaterials Lab (FuNL)
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AbstractCopper oxide nanostructures have been explored in the literature for their great promise in the areas of energy storage and catalysis, which can be controlled based on their shape. Herein we describe the synthesis of complex branched nanocages of copper hydroxide with an alternating stacked morphology. The size of the nanocages' core and the length of the branches can be controlled by the temperature and ratio of surfactant used, varying the length from 85 to 232 nm long, and varying the core size from 240 to 19 nm. The nanostructures' unique morphology forms by controlling the growth of an initial spherical seed, and the crystallization of the anisotropic arms. The Cu(OH)2 nanostructures can be converted to polycrystalline CuO branched nanocages and Cu2O nanoframes. We show that the branched nanocage morphology of CuO has markedly superior catalytic properties to previous reports with CuO nanomaterials, resulting in a rapid and efficient catalyst for C-S coupling. © 2014 American Chemical Society.
SponsorsThe authors acknowledge the financial support of KAUST's University Research Fund.
PublisherAmerican Chemical Society (ACS)