▎ 摘　　要

NOVELTY - Preparing nanocomposite material involves providing a reaction medium, loading an iron salt and an aromatic polycarboxylic acid on the surface of graphene oxide through the reaction medium, and heating to obtain intermediate. The intermediate body is heat-treated under an inert gas atmosphere to obtain the nanocomposite material. USE - Method enables to prepare nanocomposite material for use in the field of electromagnetic wave absorbing materials (claimed). ADVANTAGE - The method enables to prepare nanocomposite material that can obtain a wave absorbing material with adjustable composition, controllable structure and high performance.