Fan Xiaohu, Fu Qiang, Liu Guorui, Jia Hongliang, Dong Xiaolong, Li Yi-Fan, Cui Song
International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China.
Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, 150030, China.
Environ Sci Ecotechnol. 2024 Aug 2;22:100469. doi: 10.1016/j.ese.2024.100469. eCollection 2024 Nov.
Molecular oxygen (O) is an environmentally friendly, cost-effective, and non-toxic oxidant. Activation of O generates various highly oxidative reactive oxygen species (ROS), which efficiently degrade pollutants with minimal environmental impact. Despite extensive research on the application of O activation in environmental remediation, a comprehensive review addressing this topic is currently lacking. This review provides an informative overview of recent advancements in O activation, focusing on three primary strategies: photocatalytic activation, chemical activation, and electrochemical activation of O. We elucidate the respective mechanisms of these activation methods and discuss their advantages and disadvantages. Additionally, we thoroughly analyze the influence of oxygen supply, reactive temperature, and pH on the O activation process. From electron transfer and energy transfer perspectives, we explore the pathways for ROS generation during O activation. Finally, we address the challenges faced by researchers in this field and discuss future prospects for utilizing O activation in pollution control applications. This detailed analysis enhances our understanding and provides valuable insights for the practical implementation of organic pollutant degradation.
分子氧（O₂）是一种环境友好、成本效益高且无毒的氧化剂。O₂的活化会产生各种高氧化性的活性氧物种（ROS），这些活性氧物种能以最小的环境影响有效降解污染物。尽管对O₂活化在环境修复中的应用进行了广泛研究，但目前仍缺乏针对该主题的全面综述。本综述提供了有关O₂活化最新进展的信息性概述，重点关注三种主要策略：O₂的光催化活化、化学活化和电化学活化。我们阐明了这些活化方法各自的机制，并讨论了它们的优缺点。此外，我们深入分析了氧气供应、反应温度和pH对O₂活化过程的影响。从电子转移和能量转移的角度，我们探索了O₂活化过程中ROS的生成途径。最后，我们阐述了该领域研究人员面临的挑战，并讨论了在污染控制应用中利用O₂活化的未来前景。这一详细分析增进了我们的理解，并为有机污染物降解的实际应用提供了有价值的见解。
