Magnetic oxidized graphene loaded phosphine Schiff base palladium catalyst and preparing method and application thereof

The invention discloses a magnetic oxidized graphene loaded phosphine Schiff base palladium catalyst and a preparing method and application thereof. Oxidized graphene prepared through an improved Hummers method serves as a catalyst carrier, phosphine Schiff base serves as ligand, palladium salt serves as an active component, the loading capacity of palladium particles accounts for 5.0-10.0% of the total mass of the catalyst, and the particle size is 5-15 nm. The prepared catalyst is high in stability and capable of preventing precious metal palladium from aggregating or losing; the catalyst has high catalytic activity and can efficiently promote the Heck coupled reaction; more importantly, due to good magnetic response, the catalyst can be fast recovered and reused through simple magnetic separation under the action of an external magnetic field, and practicability is high.