Size Controlled Two-dimensional Co3O4 with Exposure of {111} Plane: Synthesis and Catalytic Properties for Photooxidation of Organics

The size controlled 2D hexagonal structured Co3O4 with exposure of {111} plane was fabricated, and the catalytic properties for photooxidation of organics using as-prepared samples were investigated. 2D hexagonal structured Co3O4 with the size of 3 μm displays the higher photocatalytic activity than 200 nm size for the photooxidation of IPA and cyclohexanol, both of which are higher than bulk Co3O4 suggesting that more exposure of {111} planes provides Co3O4 with greatly enhanced photocatalytic activity.