Due to the toxicity and carcinogenicity, antimony and its compounds have been included as priority pollutants by Environmental Protection Agency of the United States (USEPA) and the European Union (EU). The removal methods of antimony need to be further studied. In this study, nZVI/Fe₃O₄ nanocomposites were synthesized, characterized, and applied to remove Sb(III). The nZVI/Fe₃O₄ nanocomposites before and after reaction with Sb(III) were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), vibrating sample magnetometry (VSM), and X-ray photoelectron spectroscopy (XPS). nZVI/Fe₃O₄ nanocomposites have a maximum Sb(III) adsorption capacity of 87.6 mg/g at pH 7.0. The removal of Sb(III) was a complex process including surface adsorption and oxidation. The removal of Sb(III) mainly involved three processes: (1) most Sb(III) was adsorbed on the surface of nZVI/Fe₃O₄ nanocomposites; (2) part of Sb(III) was rapidly oxidized to less toxic Sb(V); and (3) the generated Sb(V) was further adsorbed on the surface of nZVI/Fe₃O₄ nanocomposites. The nZVI/Fe₃O₄ nanocomposites can be separated from solution with an external magnet. The high Sb(III) removal efficiency and rapid separability of nZVI/Fe₃O₄ nanocomposites exhibited the great potential for the removal of Sb(III) from wastewater.

由于毒性和致癌性，锑及其化合物已被美国环境保护署（USEPA）和欧盟（EU）列为优先污染物。锑的去除方法有待进一步研究。在这项研究中，nZVI / Fe ₃ O ₄纳米复合材料的合成，表征和应用于去除Sb（III）。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR），透射电子显微镜（TEM），能量色散光谱（EDS），X射线衍射（XRD），表征与Sb（III）反应之前和之后的nZVI / Fe ₃ O ₄纳米复合材料，振动样品磁力测定（VSM）和X射线光电子能谱（XPS）。nZVI / Fe ₃ O ₄纳米复合材料在pH 7.0下的最大Sb（III）吸附容量为87.6 mg / g。去除Sb（III）是一个复杂的过程，包括表面吸附和氧化。Sb（III）的去除主要涉及三个过程：（1）大多数Sb（III）吸附在nZVI / Fe ₃ O ₄纳米复合材料的表面上；（2）部分Sb（III）被快速氧化为毒性较小的Sb（V）；（3）将生成的Sb（V）进一步吸附在nZVI / Fe ₃ O ₄纳米复合材料的表面上。可以使用外部磁体将nZVI / Fe ₃ O ₄纳米复合材料与溶液分离。nZVI / Fe ₃ O ₄的高Sb（III）去除效率和快速分离性 纳米复合材料显示出从废水中去除Sb（III）的巨大潜力。