近日，大湾区城市环境安全与绿色发展教育部重点实验室学术骨干江进教授团队在环境领域顶级期刊《Environmental Science & Technology》上发表了题为“Aqueous Iron(IV)-oxo Complex: An Emerging Powerful Reactive Oxidant Formed by Iron(II)-based Advanced Oxidation Processes for Oxidative Water Treatment”的评论性综述。江进教授团队于2018年在ES&T期刊发文报道了Fe(II)/过硫酸盐高级氧化体系中主要活性氧化剂为水合四价铁（FeIVaqO2+）而非SO4•−，从而再次引起了高级氧化水处理领域对于FeIVaqO2+的广泛研究兴趣，但同时关于相关高级氧化体系中FeIVaqO2+与自由基相对贡献的争议也日益增多。基于此，本文首先全面综述了水合四价铁（FeIVaqO2+）的化学性质（化学结构、氧化还原电位、水解反应等）和氧化特性（氧化路径和氧化速率），并将其与•OH和SO4•−的氧化特性进行了细致对比。其次，文章总结了基于Fe(II)活化的高级氧化体系的研究中关于FeIVaqO2+与自由基的争议，并对现有研究是否足够证实这些体系中产生了FeIVaqO2+进行了讨论。文章旨在提高对于FeIVaqO2+氧化特性的理解与认识，并期望能够推动FeIVaqO2+在环境污染治理领域的应用与推广。

 论文DOI：https://doi.org/10.1021/acs.est.1c07110

水合四价铁（FeIVaqO2+）是活性最高的四价铁活性物种之一。FeIVaqO2+具有高自旋态、较高的氧化还原电位、较长的半衰期等优良的化学性质，能够与有机物以氢转移、氧转移、电子转移、亲电加成等多种路径进行反应，并对无机离子表现出较强的选择氧化性。本文首次综述了FeIVaqO2+的化学性质和氧化特性，并将其与•OH和SO4•−的氧化特性进行了全面对比。近年来，不断有研究发现FeIVaqO2+在多个基于Fe(II)活化的高级氧化体系中起到重要作用，这挑战了自由基为这些高级氧化体系中主要活性氧化剂的传统认知。基于此，本文总结了基于Fe(II)活化的高级氧化体系中FeIVaqO2+与自由基的争议，并对现有研究是否足够证实在这些高级氧化体系中产生了FeIVaqO2+进行了讨论。

英文摘要：

The Minamata Convention on Mercury calls for Hg control actions to protect the environment and human beings from the adverse impacts of Hg pollution. It aims at the entire life cycle of Hg. Existing studies on the Hg cycle in the global environmental–economic system have characterized the emission-to-impact pathway of Hg pollution. That is, Hg emissions/releases from the economic system can have adverse impacts on human health and ecosystems. However, current modeling of the Hg cycle is not fully looped. It ignores the feedback of Hg-related environmental impacts (including human health impacts and ecosystem impacts) to the economic system. This would impede the development of more comprehensive Hg control actions. By synthesizing recent information on Hg cycle modeling, this critical review found that Hg-related environmental impacts would have feedbacks to the economic system via the labor force and biodiversity loss. However, the interactions between Hg-related activities in the environmental and economic systems are not completely clear. The cascading effects of Hg-related environmental impacts to the economic system throughout global supply chains have not been revealed. Here, we emphasize the knowledge gaps and propose possible approaches for looping the Hg cycle in global environmental–economic system modeling. This progress is crucial for formulating more dynamic and flexible Hg control measures. It provides new perspectives for the implementation of the Minamata Convention on Mercury.