▎ 摘　　要

NOVELTY - A palladium/CuxO.graphene oxide composite catalyst is prepared by mixing copper salt solution and graphene oxide solution to form solution A, orderly adding palladium salt solution, soluble alkali and reducing solution to form solution B, hydrothermal reacting to obtain solution C, centrifugally washing solids, drying and grinding. USE - Method for preparing palladium/CuxO.graphene oxide composite catalyst used for room temperature removing formaldehyde gas (claimed). ADVANTAGE - The catalyst is conducive to further oxidation of formaldehyde oxidation intermediates for fast conversion decomposition of high concentrations formaldehyde in relatively short period, has less steps, easy operation, close contact each component on nano scale, no high temperature calcining or sintering and rich oxygen-containing groups to improve adsorption of formaldehyde on catalyst performance, enhances activity, and quickly reduces concentration.