▎ 摘　　要

NOVELTY - Preparing catalyst for electrocatalytic synthesis of hydrogen peroxide involves dissolving transition metal salt in hydrochloric acid solution, adding hydrogen peroxide solution, stirring to obtain solution A, subjecting carbon carrier to nitric acid oxidation treatment, adding water and isopropanol, and ultrasonically ultrasonicating to obtain dispersion liquid B, adding dispersion solution B to solution B, stirring, evaporating and concentrating to obtain slurry, calcining the slurry obtained in step (iii), treating with acid, and drying to obtain catalyst. USE - Preparation of catalyst for electrocatalytic synthesis of hydrogen peroxide. Uses include but are not limited to papermaking, chemical synthesis, medical disinfection, waste water treatment and food sterilization. ADVANTAGE - The method provides catalyst with high activity, high selectivity and high stability. The catalyst is non-noble metal single atom catalyst capable of high-efficiency electro-catalytic oxygen reduction synthesis hydrogen peroxide under acidic system, and can effectively promote the process of reducing the oxygen into hydrogen peroxide , and solves the problem of high price and low efficiency of the catalyst existing in the production of hydrogen peroxide in the current acidic system. The method uses transition metal salt with low price, reduces the production cost, at the same time, the presence of transition metal element can promote the adsorption of oxygen molecules in the acidic system and has the function of improving the reaction initial potential. The carbon carrier is carbon black, carbon nano tube, porous carbon, or graphene.