化学
催化作用
适应性
复合数
矿化(土壤科学)
降级(电信)
比表面积
化学工程
核化学
材料科学
有机化学
复合材料
计算机科学
生态学
工程类
生物
电信
氮气
作者
Peng Xu,Xiang Li,R. Wei,Chunyan Yang,Tianyao Shen,Peng Wang,Guangshan Zhang
标识
DOI:10.1016/j.cej.2023.142204
摘要
The adaptability and stability of catalysts guarantee efficient catalytic performance. Hence, we fabricated FeCo2O4/diatomite for efficient peroxymonosulfate (PMS) activation. Distinct from stacked FeCo2O4, FeCo2O4/diatomite possessed a 1.2-fold larger specific surface area (94.84 m2 g−1), achieving 100% ATZ removal within 10 min at 0.2 g L−1 PMS and 0.1 g L−1 FeCo2O4/diatomite. The system could adapt to a broad pH range (3–11) and complex water matrices, efficiently removing multiple contaminants. High removal performance (>92%) and mineralization (>57%) were maintained after six cycles with minimal leached Co (0.10 mg L−1). The conversion between ≡Fe(III)/≡Fe(II) and ≡Co(III)/≡Co(II) could trigger PMS persistently, producing abundant active species, in which SO4•− was dominant. Then, intermediates and degradation pathways were proposed based on DFT calculations and ESI-QTOF-MS/MS data. Toxicity analysis showed that most intermediates were more eco-friendly than ATZ. This study developed FeCo2O4/diatomite with superior catalytic performance, high adaptability, and stability for eliminating refractory organic pollutants.
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