Preparation method and applications of carbon nitrogen nanospheres loaded with copper-palladium alloy particles

The invention provides a preparation method and applications of carbon nitrogen nanospheres loaded with copper-palladium alloy particles. The preparation method comprises following steps: 1, deionized water, ethanol, a copper precursor, a palladium precursor, and dicyandiamide are mixed; 2, a phenolic resin solution is added into a solution obtained in step 1 dropwise; 3, the solution is mixed with a structure-directing agent; 4, a mixed solution obtained in step 3 is spread on a culture dish; 5, a material obtained via drying of the culture dish is peeled off from the culture dish using a knife, and is subjected to roasting at nitrogen atmosphere so as to obtain the carbon nitrogen nanospheres loaded with copper-palladium alloy particles. The carbon nitrogen nanospheres loaded with copper-palladium alloy particles can be prepared into electricity catalyze electrode modules to remove nitrates in water body at normal temperature under normal pressure; removing efficiency and removing capacity are high; and sel