化学
催化作用
单线态氧
羟基自由基
电子转移
降级(电信)
铁质
腐植酸
激进的
铁
硼
氧化铁
光化学
无机化学
氧气
有机化学
电信
肥料
计算机科学
作者
Zeyu Guan,Yiming Zhang,Shiyu Zuo,Shibo Zhu,Weishan Wang,Dongya Li
标识
DOI:10.1016/j.seppur.2023.123391
摘要
The detoxification and harmless treatment of toxic organic industrial wastewater are essential guarantees for the global water environment and human life safety. As an important treatment technology for this wastewater, the advanced oxidation process is limited by the catalytic rate due to the low reduction rate, and the modulation and acceleration of electron transfer at the catalytic sites become the focus and difficulty in this field. Herein, we synthesized boron-doped iron oxide (FeOx-B) to enhance the interfacial electron transfer during peroxymonosulfate (PMS) catalysis, resulting in efficient degradation (91.73 %) of the contaminant (TTCH, Tetracycline hydrochloride). Compared with the commercial Fe2O3 and Fe3O4, the removal rate of TTCH is improved by 47.89 % and 24.45 %, respectively. As a new active site, B-O interacts with the contaminant and accelerates the reduction of Fe (III). The reactive species also change from sulfate radical (SO4−), hydroxyl radical (OH), and singlet oxygen (1O2) to surface reactive complexes. The system is pH-adaptive (pH = 3–11) and presents excellent resistance to humic acid (HA) and anions (10 mM). Toxicity assessment reveals that the degradation products are low toxic or harmless. This work suggests a new strategy for the development of highly reactive iron-based materials and provides theoretical insights into the mechanism of the PMS activation processes.
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