Zero-valent iron (ZVI) technology has recently gained significant interest in the efficient sequestration of a wide variety of contaminants. However, surface passivation of ZVI because of its intrinsic passive layer would lead to the inferior reactivity of ZVI and its lower efficacy in contaminant removal. Therefore, to activate the ZVI surface cheaply, continuously, and efficiently is an important challenge that ZVI technology must overcome before its wide-scale application. To date, several physical and chemical approaches have been extensively applied to increase the reactivity of the ZVI surface toward the elimination of broad-spectrum pollutants. Nevertheless, these techniques have several limitations such as low efficacy, narrow working pH, eco-toxicity, and high installation cost. The objective of this mini-review paper is to identify the critical role of oxygen in determining the reactivity of ZVI toward contaminant removal. Subsequently, the effect of three typical oxidants (H₂O₂, KMnO₄, and NaClO) on broad-spectrum contaminants removal by ZVI has been documented and discussed. The reaction mechanism and sequestration efficacies of the ZVI/oxidant system were evaluated and reviewed. The technical basis of the ZVI/oxidant approach is based on the half-reaction of the cathodic reduction of the oxidants. The oxidants commonly used in the water treatment industry, i.e., NaClO, O₃, and H₂O₂, can be served as an ideal coupling electron receptor. With the combination of these oxidants, the surface corrosion of ZVI can be continuously driven. The ZVI/oxidants technology has been compared with other conventional technologies and conclusions have been drawn.

零价铁（ZVI）技术最近对有效隔离各种污染物引起了极大的兴趣。但是，由于ZVI固有的钝化层，其表面钝化会导致ZVI的反应性较差，并且其去除污染物的功效较低。因此，廉价，连续和有效地激活ZVI表面是ZVI技术在大规模应用之前必须克服的重要挑战。迄今为止，已广泛应用了几种物理和化学方法来提高ZVI表面对消除广谱污染物的反应性。然而，这些技术具有一些局限性，例如功效低，pH值狭窄，生态毒性和安装成本高。这篇迷你评论的目的是确定氧气在确定ZVI对污染物去除的反应性方面的关键作用。随后，三种典型氧化剂（H₂ O ₂，KMnO ₄和NaClO）在ZVI去除广谱污染物方面已有文献记载和讨论。对ZVI /氧化剂体系的反应机理和螯合效率进行了评价和综述。ZVI /氧化剂方法的技术基础是基于氧化剂的阴极还原反应的半反应。水处理行业中常用的氧化剂，即NaClO，O ₃和H ₂ O ₂，可以用作理想的偶联电子受体。结合使用这些氧化剂，可以连续驱动ZVI的表面腐蚀。ZVI /氧化剂技术已与其他常规技术进行了比较，并得出了结论。