The surface configurations of the low-index facets of a set of spinel oxides are investigated using DFT+U calculations to derive surface energies and predict equilibrium nanoparticle shapes via the Wulff construction. Two very different conditions are investigated. corresponding to application either in heterogeneous catalysis or in electrocatalysis. First. https://parisnaturalfoodes.shop/product-category/veg-essential-nat/