催化作用
化学
吸附
单线态氧
电子转移
氧气
双酚A
光化学
无机化学
化学工程
有机化学
工程类
环氧树脂
作者
Qihui Wang,Zeyu Guan,Su Ding,Dongsheng Xia,Dongya Li
标识
DOI:10.1016/j.seppur.2022.120625
摘要
Intrinsically inferior electron transfer rate between catalyst and oxidant was considered as a limiting factor to inhibit the catalytic efficiency of peroxymonosulfate (PMS). In this work, the introduction of Mn atoms into iron oxide (Fe2O3) (Mn-Fe2O3) effectively altered the electronic structure of catalyst surface and promoted the adsorption of PMS, which increased the removal rate of Bisphenol A (BPA) by 235 times, with an extensive pH range (3–11). The main active species contained surface active complexes, superoxide radical (O2−), and singlet oxygen (1O2). The reactor unit could operate continuously for 23 days and still maintain a removal rate of more than 95%. In addition, it had good adaptability to actual water bodies and could effectively reduce the toxicity of BPA. This work shed new light on the regulation of the interfacial electron transfer process between catalyst and oxidant.
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