▎ 摘　　要

NOVELTY - Preparing magnetic core-shell nanospheres comprises preparing a nano-scale adsorption carrier, performing a first modification on the nano-scale adsorption carrier to obtain a first modified adsorption carrier, modifying the first modified adsorption carrier for a second time to obtain a second modified adsorption carrier, and polymerizing the second modified adsorption carrier to obtain magnetic core-shell nanospheres. USE - The magnetic core-shell nanosphere is useful for water treatment containing phenolic pollutants (claimed). ADVANTAGE - The method solves that the preparation process of magnetic porous adsorbent that only modifies magnetic nanoparticles once, destroys the compatibility of the magnetic nanoparticles and the polymer, and affects the problem of the adsorption operation of the magnetic adsorbent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for magnetic core-shell nanosphere for adsorbing phenolic pollutants, where the size of the magnetic core-shell nanospheres is 50-500 nm.