Adsorption Behavior and Mechanism of 2,4,6-Trinitrotoluene by Functionalized Polystyrene Nanospheres

摘要

3-Methactyloxylpropyltrimethoxyl silane (KH-570)-modified polystyrene (PS) nanospheres and PS nanospheres were prepared and used to absorb 2,4,6-trinitrotoluene. The absorbed amount reached 2.81 mg/g for KH-570-modified PS nanospheres at 298 K and pH 6 when the initial 2,4,6-trinitrotoluen concentration was 50 mg/L. The kinetic results showed that the pseudo-second-order model fit the two kinds of absorbents. The adsorption mechanism study revealed that the driving forces of adsorption were combined actions of ∏-∏ stacking interaction, hydrogen interaction, and hydrophobic interaction. The prepared nanospheres were reusable.