Cobalt(III) oxide nanoparticles (Co²O³) are a class of transition metal oxide nanoparticles with distinct chemical and physical properties. This article provides an in-depth overview of cobalt(III) oxide nanoparticles, covering their properties, synthesis methods, and various applications. It also addresses safety considerations and potential research directions for future advancements. 1. Introduction Cobalt(III) oxide, also known as...