Interactions of water and short-chain alcohols with CoFeO(001) surfaces at low coverages.

Iron and cobalt-based oxides crystallizing in the spinel structure are efficient and affordable catalysts for the oxidation of organics, yet, the detailed understanding of their surface structure and reactivity is limited. To fill this gap, we have investigated the (001) surfaces of cobalt ferrite, CoFeO, with the A- and B-layer terminations using density functional theory (DFT/PBE0) and an embedded cluster model. We have considered the five-fold coordinated Co (O), two-fold coordinated Fe (T), and an oxygen vacancy, as active sites for the adsorption of water and short-chain alcohols: methanol, ethanol, and 2-propanol, in the low coverage regime.

3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen evolution reaction.

The three-dimensional (3D) distribution of individual atoms on the surface of catalyst nanoparticles plays a vital role in their activity and stability. Optimising the performance of electrocatalysts requires atomic-scale information, but it is difficult to obtain. Here, we use atom probe tomography to elucidate the 3D structure of 10 nm sized CoFeO and CoFeO nanoparticles during oxygen evolution reaction (OER).

Liquid-Phase Cyclohexene Oxidation with O over Spray-Flame-Synthesized La Sr CoO Perovskite Nanoparticles.

La Sr CoO (x=0, 0.1, 0.2, 0.