High-stability graphene coated Pd-Zn alloy catalyst and preparation method thereof

The invention provides a high-stability graphene coated Pd-Zn alloy catalyst and a preparation method of the high-stability graphene coated Pd-Zn alloy catalyst. The preparation method comprises the following steps: firstly, synthesizing a carbon precursor with a three-dimensional structure by using a simple method; after palladium salt is loaded on the surface of the carbon carrier, acetate is added to serve as a small molecule modifier, finally, the Pd-Zn alloy catalyst coated with graphene is obtained through one-step heat treatment, alloy particles are evenly dispersed on the carbon carrier, and the particle size is smaller than 10 nm. The preparation method is simple to operate, low in cost and capable of achieving mass production, the obtained catalyst has a unique graphene coating structure, alloy particles are bound by a graphite layer, the physical isolation effect is achieved, falling and gathering of the catalyst in practical application are reduced, disappearance of active sites is prevented, and