Hierarchically triangular prism structured Co3O4: self-supported fabrication and photocatalytic property

The formation of ammonium cobalt(II) phosphate was utilized to synthesize unprecedented 3D structures of Co3O4, triangular prisms, via a self-supported and organics-free method. The structure is shaped by stacking hundreds of small nanoplatelets; diameters and thicknesses of platelets are similar to 100 nm and similar to 20 nm, respectively.