铁氧化物的钝化作用会降低零价铁（ZVI）的反应活性，ZVI表面修饰一定的硫化物可以显著提高其对污染物的去除率，好氧体系中O2使硫化零价铁（S-ZVI）反应机理变得更加复杂。S-ZVI因制备方法、污染物种类不同其影响和作用机制也不相同。本研究以不同的方法制备S-ZVI，研究制备方法对S-ZVI表面形貌及特征的影响；研究氧气及不同浓度对不同制备方法制备的S-ZVI去除有机物及重金属污染物的动力学变化，FeS对ZVI的腐蚀促进以及固液界面Fe(II)释放规律，研究不同S-ZVI去除不同污染物机理的差异。通过对材料形貌、结构、组成、比表面积、表面粗糙度等分析，从微观层面揭示反应加速机理；通过对C/C0，Fe(II)，Eh，DO以及pH等各参数时间序列相关性矩阵分析研究污染物去除机理。通过电化学手段研究硫化物对电子传递机制的影响。构建污染物去除动力学变化、表面反应活性位变化、DO变化模型。

The passivation of iron oxide can reduce the reaction activity of zero valent iron (ZVI), sulfidation could be an effective strategy to tune the reactive properties of ZVI in favor of a broad range of contaminant removal processes, the existence of O2 in the aerobic system makes the reaction mechanism of sulfidation zero valent iron (S-ZVI) with the contaminants more complicated. The effect and mechanism of S-ZVI to contaminants are different due to different preparation methods and different pollutants. In this study, S-ZVI was prepared by different preparation methods and the effect of preparation on the surface morphology and characteristics of S-ZVI was also evaluated. The kinetics of organics and heavy metal pollutants removal using S-ZVI by different preparation methods were studied under the aerobic system and different oxygen concentrations. FeS may directly affect the corrosion of ZVI, and subsequently affect the production of Fe(II). The differences in the mechanism of different pollutants removal were also studied. By analyzing the morphology, structure, composition, surface area and surface roughness of S-ZVI, the mechanism of reaction acceleration is revealed from the micro aspects. The binary time series correlation analysis of C/C0, Fe(II), Eh, DO and pH were plotted to identify and distinguish the dominant controlling processes for contaminant removal. The role of FeS and regeneration of Fe(II) were also evaluated from this correlation analysis. Electrochemical test were designed to illustrate the electron transfer rate and electron acceleration transfer mechanism. The conceptual and quantitative models will be built which will explain the effects of sulfidation on the improvements of ZVI reactivity in aerobic environment. It can also predict the active sites on the surface of ZVI, reaction kinetics and the change of characteristic parameters and provides the theoretical foundation for mechanism.