▎ 摘　　要

Nano-zero valent iron (nZVI) loaded onto graphene oxide (GO) as a composite material (nZVI/rGO) was prepared to remove 2,4, 6-trinitrotoluene (TNT). The nZVI/rGO was characterized by means of scanning transmission electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Batch experiments with variable theoretical nZVI mass loading, pH values and material dosage were conducted to evaluate the removal performance of nZVI/rGO. The results showed that nZVI/rGO is very effective in removing TNT. Furthermore, nZVI/rGO shows good removal capability within a wide range of reaction conditions. Through the experiment, it also concluded that the TNT can be removed below the detection limit of 0.1 mg/L under the optimal treatment conditions of pH=6, theoretical nZVI mass loading of 3 g/g rGO, composite material dosage of 40 g/L. In addition, nZVI/rGO could overcome the shortcomings of nZVI which formed undesirable precipitation in the reaction frequently. These findings shed new light on TNT removing in the water environment.