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Efficient degradation and mineralization of polyethylene terephthalate microplastics by the synergy of sulfate and hydroxyl radicals in a heterogeneous electro-Fenton-activated persulfate oxidation system

Journal of Hazardous Materials 2024 36 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 65 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xueming Chen, Xueming Chen, Bing‐Jie Ni Zhijie Chen, Zhijie Chen, Zhijie Chen, Zhijie Chen, Zhijie Chen, Zhijie Chen, Yinghui Lin, Yinghui Lin, Bing‐Jie Ni Zhijie Chen, Zhijie Chen, Bing‐Jie Ni Bing‐Jie Ni Xueming Chen, Xueming Chen, Yuehua Zhang, Zhijie Chen, Zhijie Chen, Zhijie Chen, Zhijie Chen, Bing‐Jie Ni Linyan Yang, Linyan Yang, Zhijie Chen, Zhijie Chen, Xueming Chen, Bing‐Jie Ni Zhijie Chen, Zhijie Chen, Zhijie Chen, Bing‐Jie Ni Bing‐Jie Ni Yonghao Wang, Xueming Chen, Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Yuancai Lv, Bing‐Jie Ni Bing‐Jie Ni Xueming Chen, Bing‐Jie Ni Linyan Yang, Bing‐Jie Ni Bing‐Jie Ni Linyan Yang, Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Zhijie Chen, Bing‐Jie Ni Bing‐Jie Ni Xueming Chen, Xueming Chen, Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Xueming Chen, Bing‐Jie Ni Zhijie Chen, Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Xueming Chen, Xueming Chen, Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Bing‐Jie Ni Zhijie Chen, Zhijie Chen, Bing‐Jie Ni Bing‐Jie Ni

Summary

Researchers developed a new electrochemical system that broke down over 91% of PET microplastics (the type found in water bottles and food packaging) in water within 12 hours. This cleanup technology works by generating powerful chemical radicals that attack the plastic structure, offering a promising approach for removing microplastics from water before they can enter drinking water systems or accumulate in food chains.

Polymers

PE PET

The presence of polyethylene terephthalate (PET) microplastics (MPs) in waters has posed considerable threats to the environment and humans. In this work, a heterogeneous electro-Fenton-activated persulfate oxidation system with the FeS2-modified carbon felt as the cathode (abbreviated as EF-SR) was proposed for the efficient degradation of PET MPs. The results showed that i) the EF-SR system removed 91.3 ± 0.9 % of 100 mg/L PET after 12 h at the expense of trace loss (< 0.07 %) of [Fe] and that ii) dissolved organics and nanoplastics were first formed and accumulated and then quickly consumed in the EF-SR system. In addition to the destruction of the surface morphology, considerable changes in the surface structure of PET were noted after EF-SR treatment. On top of the emergence of the O-H bond, the ratio of C-O/C=O to C-C increased from 0.25 to 0.35, proving the rupture of the backbone of PET and the formation of oxygen-containing groups on the PET surface. With the verified involvement and contributions of SO4•- and •OH, three possible paths were proposed to describe the degradation of PET towards complete mineralization through chain cleavage and oxidation in the EF-SR system.

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