▎ 摘　　要

NOVELTY - Gamma-boehmite/reduced graphene oxide ( gamma AlOOH/rGO) composite wave absorbing material in the shape of a hollow flower ball, is claimed. USE - The material is useful in electromagnetic wave absorption (claimed). ADVANTAGE - The method: utilizes one-step hydrothermal method; is simple and safe; does not require to add any surface active agent and additional inert gas protection; and prepares product with excellent absorbing properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the gamma AlOOH/rGO composite wave absorbing material, comprising (i) preparing graphene oxide, (ii) adding the graphene oxide to deionized water, and performing ultrasonic treatment, (iii) adding potassium aluminum sulfate dodecahydrate (KAl(SO4)2.12 H2O) and urea to deionized water, and magnetically stirring, (iv) adding the solution in the step (ii) to the solution in the step (iii) and magnetically stirring, and (v) adding the mixture in the step (iv) into a reaction kettle, performing hydrothermal reaction, washing and drying.