▎ 摘　　要

NOVELTY - Preparing halloysite nanotube/graphene oxide composite material comprises (i) adding halloysite nanotubes and 3-chloropropyltrimethoxysilane to toluene, condensing and refluxing in magnetic stirrer, cooling, filtering, washing with toluene to remove excess 3-chloropropyltrimethoxysilane, washing with ethanol, drying the final product to obtain a chlorinated modified halloysite nanotube; (ii) adding graphene oxide to ethanol, ultrasonically processing, adding ethylenediamine, continuously ultrasonically processing for 28-32 minutes, adding 0.9-1.1 g dicyclohexylcarbodiimide, reacting at 80 degrees C for 12 hours, filtering product, repeatedly washing with ethanol, and drying product to obtain modified graphene oxide; and (iii) adding the modified halloysite nanotubes and modified graphene oxide into 100 ml ethanol, ultrasonically processing for 28-32 minutes, reacting at 80 degrees C for 12 hours, cooling, filtering, repeatedly washing product with ethanol, and drying obtained product. USE - The composite material is useful in preparing sewage treatment agent and removing antibiotic in waste water (all claimed). ADVANTAGE - The composite material: has improved stability, very good adsorption effect on levofloxacin in pH range of 110, good adsorption performance and fast adsorption speed, which solves that existing composite materials obtained by electrostatic adsorption can only be used in acid and neutral media, structure is unstable and adsorption efficiency is low. DETAILED DESCRIPTION - Preparing halloysite nanotube/graphene oxide composite material comprises (i) adding 4.9-5.1 g halloysite nanotubes and 4.9-5.1 ml 3-chloropropyltrimethoxysilane to 100 ml toluene, condensing and refluxing at 110-120 degrees C for 7.5-8.5 hours in magnetic stirrer, cooling, filtering, washing with toluene to remove excess 3-chloropropyltrimethoxysilane, washing with ethanol, drying the final product to obtain a chlorinated modified halloysite nanotube; (ii) adding 0.9-1.1 g graphene oxide to 100 ml ethanol, ultrasonically processing for 8-12 minutes, adding 19-21 ml ethylenediamine, continuously ultrasonically processing for 28-32 minutes, adding 0.9-1.1 g dicyclohexylcarbodiimide, reacting at 80 degrees C for 12 hours, filtering product, repeatedly washing with ethanol, and drying product to obtain modified graphene oxide; and (iii) adding the modified halloysite nanotubes and modified graphene oxide into 100 ml ethanol, ultrasonically processing for 28-32 minutes, reacting at 80 degrees C for 12 hours, cooling, filtering, repeatedly washing product with ethanol, and drying obtained product. An INDEPENDENT CLAIM is also included for composite material is prepared by above mentioned method.