Efficient Photocatalytic Degradation of the Persistent PET Fiber‑Based Microplastics over Pt Nanoparticles Decorated N‑Doped TiO_(2) Nanoflowers

作     者：Dawang Zhou Hongxia Luo Fangzhou Zhang Jing Wu Jianping Yang Huaping Wang 

作者机构：State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Co‑Innovation Center for Textile IndustryInnovation Center for Textile Science and TechnologyDonghua UniversityShanghai 201620China 

出 版 物：《Advanced Fiber Materials》 (先进纤维材料（英文）)

年 卷 期：2022年第4卷第5期

页      面：1094-1107页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 0713[理学-生态学] 

基　　金：The authors are grateful for financial support from the Fundamental Research Funds for the Central Universities(2232021A-02) Shanghai Committee of Science and Technology,China(No.21ZR1480000) National Natural Science Foundation of China(No.52122312) State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University. 

主　　题：Microplastics Fiber-based microplastics Polyethylene terephthalate Photocatalytic degradation Hydrothermal pretreatment 

摘      要：Fiber-based microplastics(FMPs)are highly persistent and ubiquitously exist in the wastewater of textile industry and urban sewage.It remains challenging to completely remove such newly emerged organic pollutants by the predominant physical techniques.In this work,we investigated a photocatalytic degradation catalyzed by TiO_(2) catalyst to demonstrate the feasibility of implementing efficient chemical protocol to fast degrading polyethylene terephthalate(PET)-FMPs(a major FMP type existing in environment).The result shows that a hydrothermal pretreatment(180℃/12 h)is necessary to induce the initial rough appearance and molecular weight reduction.With the comprehensive action of the nano-flower shaped N doped-TiO_(2) catalyst(Pt@N-TiO_(2)-1.5%)on the relatively low molecular weight intermediates,an approximate 29%weight loss was induced on the pretreated PET-FMPs,which is about 8 times superior to the untreated sample.This work not only achieves a superior degradation effect of PET-FMPs,but also provides a new inspiration for the proposal of reduction strategies in the field of environmental remediation in the future.