四溴双酚A
过氧二硫酸盐
化学
降级(电信)
激进的
煅烧
催化作用
电子顺磁共振
猝灭(荧光)
光化学
无机化学
核化学
有机化学
阻燃剂
电信
计算机科学
物理
核磁共振
量子力学
荧光
作者
Yongjie Ma,Qintie Lin,Junli Zheng,Xindan Fan,Kehuan Xu,Yuxin Liu,Jin He
标识
DOI:10.1016/j.jwpe.2023.103704
摘要
Tetrabromobisphenol A (TBBPA) is highly biotoxic and difficult to remove, and there is an urgent need to provide an efficient method for addressing this environmental challenge. In this work, Fe3Cu2@NPC was prepared by calcination to activate peroxydisulfate (PDS) for the degradation of TBBPA. The results showed that TBBPA was completely removed within 20 min (kobs = 0.2476 min−1) and up to 90 % removal of total organic carbon (TOC) in the Fe3Cu2@NPC/PDS/TBBPA system. The cycling between Fe and Cu greatly promoted the degradation effect and had high degradation activity under neutral to alkaline conditions (pH = 7–11). Quenching experiments, EPR experiments, and steady-state concentration calculations show that TBBPA is degradated mainly by the free radical pathway, and the main active substance is O2−. The possible degradation paths of TBBPA mainly included debromination, dehydroxylation, and β-bond breakage. Fe3Cu2@NPC can be magnetically recycled and maintain high activity after reuse over four cycles.
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