Morphology-directed synthesis of Co3O4 nanotubes based on modified Kirkendall effect and its application in CH4 combustion

We reported the morphology-directed synthesis of Co3O4 nanotubes via interfacial reaction of NaOH with pre-fabricated CoC2O4 center dot 2H(2)O nanorods based on modified Kirkendall effect. The as-obtained Co3O4 nanotubes showed excellent activity and durability in catalytic combustion of CH4.