Efficient degradation of sulfonamides by introducing sulfur to magnetic Prussian blue analog in photo-assisted persulfate oxidation system,Chemosphere

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Efficient degradation of sulfonamides by introducing sulfur to magnetic Prussian blue analog in photo-assisted persulfate oxidation system
Chemosphere ( IF 8.1 ) Pub Date : 2024-04-15 , DOI: 10.1016/j.chemosphere.2024.141938
Hao Xu ₁ , Yiwen Zhang ₁ , Minghuo Wu ₁ , Tingyue Gong ₁ , Yufeng Hu ₁ , Hao Zhou ₁

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The peroxynitrite photocatalytic degradation system was considered a green, convenient, and efficient water treatment process, but not satisfying against some antibiotics, e.g. sulfonamides (SAs). To improve the photocatalytic degradation efficiency of SAs, sulfur was introduced to a magnetic Fe-MOF (Fe-metal organic framework) Prussian blue analog to achieve a heteroatomic material CuFeO@S, which was applied in heterogeneous visible light photo-assisted catalytic process with persulfate (PS) as an oxidant. The characterization results of CuFeO@S by XRD and XPS confirmed the presence of FeO (for magnetic separation), Cu (for activation of PS) and S (for narrowing the energy band and prolonging the lifetime of photo-generated electronics). Through systematic optimization of reaction conditions in CuFeO@S + PS + system, efficient degradation of four tested SAs was achieved in 30 min (removal rate of 97–100% for the tested 4 SAs). Moreover, the material could be magnetically recycled and reused for over 7 cycles with a removal rate of >90% for sulfamerazine. Furthermore, the removal rate of sulfamerazine in pond water reached 99% at a mineralization rate of about 34% (decrease in total organic matter), demonstrating its potential in the treatment of antibiotic-containing wastewater.

中文翻译：

在光辅助过硫酸盐氧化系统中将硫引入磁性普鲁士蓝类似物中有效降解磺酰胺

过氧亚硝酸盐光催化降解系统被认为是一种绿色、便捷、高效的水处理工艺，但对某些抗生素，如磺胺类药物（SAs）的降解效果并不令人满意。为了提高SAs的光催化降解效率，将硫引入到磁性Fe-MOF（铁金属有机骨架）普鲁士蓝类似物中，得到杂原子材料CuFeO@S，并将其应用于非均相可见光光辅助催化过程。过硫酸盐（PS）作为氧化剂。 CuFeO@S的XRD和XPS表征结果证实了FeO（用于磁分离）、Cu（用于激活PS）和S（用于缩小能带并延长光生电子的寿命）的存在。通过对 CuFeO@S + PS + 体系中反应条件的系统优化，在 30 分钟内实现了 4 种测试 SA 的高效降解（测试 4 种 SA 的去除率为 97-100%）。此外，该材料可以磁力回收并重复使用7次以上，磺胺嘧啶去除率>90%。此外，池塘水中磺胺嘧啶的去除率达到99%，矿化率约为34%（总有机物减少），显示出其在处理含抗生素废水方面的潜力。

更新日期：2024-04-15

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