Nanostructuring Matters: Stabilization of Electrocatalytic Oxygen Evolution Reaction Activity of ZnCoO by Zinc Leaching.

Despite the enormous attention paid to cobalt oxide materials as efficient water splitting electrocatalysts, a deep understanding of their activity discrepancy is still elusive. In this work, we showed that stabilization of the internally generated oxygen evolution reaction (OER) active phase (oxyhydroxide) is crucial for ZnCoO electrocatalysts. A systematic evaluation of the bulk and nanostructured ZnCoO system concomitant with nanostructured CoO showed that leaching of Zn is the driving force behind the near-surface transformation to the oxyhydroxide phase.

Plasmonic nanorod array for effective photothermal therapy in hyperthermia.

Optical properties of anisotropic gold nanorod arrays inside anodic aluminium oxide substrates enhance the longitudinal absorption intensities and the hyperthermia cancer cell killing at 42.1 °C under photothermal laser exposures at 671 nm.