Multi-layer cake-shaped cerium-zirconium solid solution as well as preparation method and application thereof

The invention discloses a multi-layer cake-shaped cerium-zirconium solid solution as well as a preparation method and application thereof. The micro-morphology of the cerium-zirconium solid solution is in a multi-layer cake shape, the diameter of the multi-layer cake ranges from 100 micrometers to 200 micrometers, the thickness of the multi-layer cake ranges from 2 micrometers to 10 micrometers, the thickness of each layer ranges from 10 nm to 30 nm, and the distance between every two adjacent layers ranges from 20 nm to 50 nm. According to the cerium-zirconium solid solution disclosed by the invention, the cerium-zirconium solid solution has very many layered structures, and layers are stacked to form a multi-layer pie shape, so that the cerium-zirconium solid solution has very many grooves, and the structure is very beneficial to the formation of an embedded structure between a carrier and an active substance (such as noble metal particles, transition metal particles or oxide particles) when the solid solut