The overuse of herbicide may cause pollution in water and soil environment, affecting the growth of crops. And how to reduce herbicide residues has aroused extensive attention. In this work, a novel modified biochar (Zn/SNBC) was prepared with reed straw as raw material, ZnCl2 and thiourea as modifiers to remove quinclorac (QC) residues in water and soil. Compared with primitive biochar, Zn/SN-BC, benefiting from higher specific surface area (766.5 m2 & sdot;g- 1), improved pore characteristics and abundant reactive sites (-C = O, -COOR, -C-N, -C-S, ZnS, etc), showed excellent adsorption capac...
