▎ 摘　　要

A novel nanohybrid: Fe3O4 coated with gamma -APS polymer deposited on graphene oxide (F@gamma-A/G), to remove an emergent heterocyclic contaminant benzotriazole (BTA) from solution. F@gamma-A/G was synthesized in methanol-dispersion via aminosilanization under ultra-sonication. We newly found that F@gamma-A/G crystallite lattice has a 2D triangular-network intersection with angle of 60 in three types of din, d(220) and d(111) planes with different interplanar spacings. Textural characteristics did not affect BTA adsorption, which was desired at high temperature (40 degrees C), neutral solution (pH=6) and controlled by endothermic process. Considering the maximum BTA adsorption capacity of 312.5 mg/g, which was much higher than previously reported adsorbents, the plausible mechanism was attributed to hydrophobic, electrostatic and pi-pi interaction. Effects of pH and temperature are significant on BTA adsorption to F@gamma-A/G. Methanol was the best solvent for multiple cycle regeneration with only 2% loss of BTA removal efficiency even after five cycles of F@gamma-A/G. (C) 2018 Elsevier Ltd. All rights reserved.