Phase textures of metal-oxide nanocomposites self-orchestrated by atomic diffusions through precursor alloys.

Metal-oxide nanocomposites (MONs) are of pivotal importance as electrode materials, yet lack a guiding principle to tune their phase texture. Here we report that the phase texture of MONs can be tuned at the nanoscale by controlling the nanophase separation of precursor alloys. transmission electron microscopy ( TEM) has demonstrated that a MON material of platinum (Pt) and cerium oxide (CeO) is obtained through promoted nanophase separation of a PtCe precursor alloy in an atmosphere containing oxygen (O) and carbon monoxide (CO).