Table 5.

Other HSMOs with various compositional, structure, and their catalytic performances of CO catalytic oxidation.

Materials	Synthesis Method	SBET (m2 g−1)	T100 of 100% CO Conversion	Morphology	Ref.
α-Fe2O3 hollow microspheres	Ultrasonic-spray-assisted synthesis method	49.3	320 °C		[66]
Co3O4 hollow microspheres	Ultrasonic-spray-assisted synthesis method	37.6	260 °C		[66]
H-Co3O4@H-C	Reduction–oxidation pyrolysis process	104.0	130 °C		[105]
Hollow nanostructure Co3O4	Self-sacrificial template strategy	40.6	130 °C		[106]
Core–shell nanostructure Co3O4	self-sacrificial template strategy	56.1	90 °C		[106]
Au/α-Fe2O3-Hollow Catalysts	Hydrothermal–thermal decomposition process	10.9	—		[107]
Hollow In2O3@Pd–Co3O4 core/shell nanofibers	Coaxial electrospinning	30.0	57 °C		[108]
MnO2–Co3O4 hollow spheres	“Kirkendall effect” method	123.0	135 °C		[109]