State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of the Chinese Academy of Sciences, Beijing 100049, China.
College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
Sci Total Environ. 2022 Nov 20;848:157695. doi: 10.1016/j.scitotenv.2022.157695. Epub 2022 Jul 29.
Due to the extensive commercial use of brominated flame retardants (BFRs), human beings are chronically exposed to BFRs, causing great harms to human health, which imposes urgent demands to degrade them in the environment. Among various degradation techniques, catalytic degradation has been proven to be outstanding because of its rapidness and effectiveness. Therefore, much attention has been given to catalytic degradation, especially the extensively studied photocatalytic degradation and nanocatalytic reduction techniques. Recently, some novel advanced catalytic techniques have been developed and show excellent catalytic degradation efficiency for BFRs, including natural substances catalytic degradation, new Fenton catalytic degradation, new chemical reagent catalytic degradation, new material catalytic degradation, electrocatalytic degradation, plasma catalytic degradation, and composite catalytic degradation systems. In addition to the common features of traditional catalytic techniques, these novel techniques possess their own specific advantages in various aspects. Therefore, this review summarized the degradation mechanism of BFRs by the above new catalytic degradation methods under the laboratory conditions, simulated real environment, and real environment conditions, and further evaluated their advantages and disadvantages, aiming to provide some research ideas for the catalytic degradation of BFRs in the environment in the future. We suggested that more attention should focus on features of novel catalytic techniques, including eco-friendliness, cost-effectiveness, and pragmatic usefulness.
由于溴系阻燃剂（BFRs）的广泛商业用途，人类长期接触 BFRs，对人类健康造成极大危害，这对环境中的 BFRs 降解提出了迫切要求。在各种降解技术中，催化降解因其快速性和有效性而被证明是卓越的。因此，人们对催化降解技术给予了极大关注，特别是对广泛研究的光催化降解和纳米催化还原技术。最近，一些新型先进的催化技术已经得到开发，并显示出对 BFRs 的优异催化降解效率，包括天然物质催化降解、新型 Fenton 催化降解、新型化学试剂催化降解、新型材料催化降解、电催化降解、等离子体催化降解和复合催化降解系统。除了传统催化技术的共同特点外，这些新型技术在各个方面都具有自己的特定优势。因此，本综述总结了上述新的催化降解方法在实验室条件、模拟实际环境和实际环境条件下对 BFRs 的降解机制，并进一步评估了它们的优缺点，旨在为未来环境中 BFRs 的催化降解提供一些研究思路。我们建议更多地关注新型催化技术的特点，包括环保性、成本效益和实用性。
