Composite material for detecting glutathione in serum as well as preparation method and application of composite material

The invention discloses a composite material for glutathione and a preparation method of the composite material. The composite material comprises CeO2 core-shell nanospheres and Pt nanoparticles which are uniformly dispersed on the surfaces of the CeO2 core-shell nanospheres, the preparation method of the composite material comprises the following steps: preparing carbon spheres by adopting a hydrothermal method; the preparation method comprises the following steps: preparing CeO2 core-shell nanospheres by adopting hydrothermal and calcining methods and taking carbon spheres as templates; a chemical reduction method is adopted, CeO2 core-shell nanospheres are used as a substrate, and Pt nanoparticles are uniformly dispersed. The method is simple in process, mild in reaction condition, low in preparation cost and good in stability. The prepared composite material combines the advantages of Schottky junction interface plasmon resonance and precious metal local surface plasmon resonance, exerts a synergistic eff