▎ 摘　　要

NOVELTY - Preparation of coral-like palladium selenide compound involves (1) dispersing graphene oxide in deionized water and stirring evenly, (2) adding a palladium source, a weak reducing agent, a strong reducing agent and an alkali to the solution obtained in step (1) in sequence, and mixing and stirring, (3) dissolving selenous acid in deionized water and stirring evenly, (4) mixing the solutions obtained in step (2) and step (3), and stirring evenly, (5) transferring the mixed solution obtained in step (4) to the reactor for hydrothermal reaction, and (6) cooling to room temperature naturally, and then filtering the solution to obtain a black precipitate, washing and freeze-drying to obtain the palladium selenide compound. USE - Preparation of coral-like palladium selenide compound used in catalysis application (claimed). ADVANTAGE - The one-step synthesis of coral-like palladium selenide compound nanomaterials by hydrothermal method has simple synthesis process, low toxicity, mild reaction conditions, low cost, and the synthesized Pd4Se has high purity.