降级(电信)
催化作用
电化学
镍
兴奋剂
化学工程
化学
材料科学
电极
有机化学
计算机科学
光电子学
电信
物理化学
工程类
作者
Min Wang,Zhenqi Xu,Jiadian Wang,Jin Kyu Kang,Yiwu Tang,Taizuo Ma,Qing Dong
标识
DOI:10.1016/j.cej.2023.143013
摘要
In this study, cost-effective and easily recovery Cu doped Fe2O3 in-situ growing on a nickel foam (Cu-Fe2O3/NF) was successfully fabricated and employed in peroxymonosulfate (PMS) assisting visible-light photoelectrochemical oxidation (VL + EC + catalyst + PMS) system for sulfadiazine (SD) removal. The optimum 2Cu-Fe2O3/NF exhibited excellent catalytic efficiency toward SD degradation in the VL + EC + catalyst + PMS system, 100% of SD being removed in 10 min and the firs-order reaction kinetic constant being 41.30 × 10-2 min−1. The excellent catalytic efficiency of 2Cu-Fe2O3/NF was due to the depressed recombination of photoinduced electron and hole, the enhanced electron transfer efficiency, more Fe2+, Cu+ and Ni2+ in sample resulting from Cu doping, and more active sites owing to the bulk thick petals-like of Fe2O3 being changed to thinner flakes after Cu doping. Therefore, a large number of reactive oxygen species including •OH, •O2− and h+ in the VL + EC + 2Cu-Fe2O3/NF + PMS system were produced to degrade SD. The mechanism of SD degradation in the system was explored in detail. The 2Cu-Fe2O3/NF displayed adaptation ability for a wide range, good anti-interference ability toward ions in real water. More inspiring, benefiting from the in-situ growth of Cu-Fe2O3 on NF surface, 2Cu-Fe2O3/NF exhibited good durability and recycle ability. This study provides a worthy reference for designing efficient and easily recycled catalysts and promotes the practical application possibility of low-cost Fe2O3 in antibiotics removal.
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