过硫酸盐基聚对苯二甲酸乙酯纤维单线态氧活化高级氧化重整制甲酸酯

IF 17.2 1区工程技术 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Fiber Materials Pub Date : 2025-03-10 DOI:10.1007/s42765-025-00525-w

Luyao Zhang, Li Wang, Junliang Chen, Jinzhou Li, Peng Huang, Xinming Nie, Jianping Yang

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引用次数: 0

摘要

由于缺乏合理的废物管理，塑料垃圾日益严重，对环境和人类构成严重威胁。催化氧化聚对苯二甲酸乙二醇酯（PET）废物已被报道减少环境压力和生产有价值的产品。然而，在特定活性氧驱动的温和条件下从废塑料中获得有价值的化学物质是一个巨大的挑战。本文设计了N， p掺杂Mo2C@porous碳，并将其用于PET水解产物的过氧单硫酸盐高级氧化重整。在过氧单硫酸盐基高级氧化工艺中，以PET纤维为原料制备乙二醇（EG），通过单线态氧活化催化氧化生成甲酸酯。与Mo2C相比，掺N， p的Mo2C@porous碳催化剂具有较大的比表面积，提供了更多的活性位点，具有催化活性高的特点。在较宽的pH范围（6.8 ~ 10.6）下，四环素的降解效率可达~ 80%，在EG的深度氧化转化过程中，8 h内甲酸生成速率可达~ 56.5 mmol gcat−1。对氧活性组分的检测和猝灭实验全面证实了单线态氧是深度催化氧化反应的关键活性氧组分。本研究为设计高级氧化催化剂催化废旧PET纤维塑料转化为有价化学品提供了建设性的论证。摘要催化重整聚对苯二甲酸乙二醇酯（PET）废物和纤维基微塑料的适当处理已成为研究和创新的关键领域，以减轻环境压力和产生有价值的产品。本研究揭示了通过单线态氧活化的高效Mo2C@porous C催化剂设计用于PET纤维废料过硫酸盐基深度氧化重整EG，为解决塑料废物污染和实现碳中和提供了潜在的对策

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Persulfate-Based Advanced Oxidation Reforming of Polyethylene Terephthalate Fiber into Formate via Singlet Oxygen Activation

Due to the shortage of rational waste management, plastic waste has become increasingly serious, posing a serious threat to the environment and humans. The catalytic oxidation of polyethylene terephthalate (PET) waste has been reported to reduce environmental stress and produce valuable products. However, obtaining valuable chemicals from waste plastics under mild conditions driven by specific reactive oxygen species is a great challenge. Herein, N, P-doped Mo₂C@porous carbon was designed and employed in the peroxymonosulfate-based advanced oxidation reforming of PET hydrolysate. The ethylene glycol (EG) derived from PET fiber was catalytically oxidized to formate via singlet oxygen activation during the peroxymonosulfate-based advanced oxidation process. Compared with Mo₂C, the N, P-doped Mo₂C@porous carbon catalyst with a large specific surface area provides more active sites, which has the characteristic of high catalytic activity. It presents the tetracycline degradation efficiency of ~ 80% under a wide pH range (6.8–10.6) and, further, the formate generation rate of ~ 56.5 mmol g_cat⁻¹ in the advanced oxidation reforming process of EG in 8 h. The detection and quenching experiments on the oxygen active species comprehensively confirmed that singlet oxygen is the key reactive oxygen species during the advanced catalytic oxidation reactions. This work provided a constructive demonstration for designing advanced oxidation catalysts to catalyze the reforming of waste PET fiber plastics into valuable chemicals.

Graphical Abstract

The catalytic reforming of polyethylene terephthalate (PET) waste and proper treatment of fiber-based microplastics have emerged as critical areas of research and innovation to alleviate environmental stress and generate valuable products. This work sheds light on the efficient Mo₂C@porous C catalyst design via singlet oxygen activation for persulfate-based advanced oxidation reforming of EG from PET fiber waste, providing a potential countermeasure to address plastic waste pollution and achieve carbon neutrality

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来源期刊

Advanced Fiber Materials Multiple-

CiteScore

18.70

自引率

11.20%

发文量

109

期刊介绍： Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al. Publishing on fiber or fiber-related materials, technology, engineering and application.