Photocatalytic-Driven Self-Degradation of Polyester Microplastics Under Solar Light

Zhong, Yunjin; Zhang, Bingying; Zhu, Zhexin; Wang, Gangqiang; Mei, Xueting; Fang, Yu; Lü, Wangyang

doi:10.1007/s10924-023-02763-8

Cited by 12 publications

(3 citation statements)

References 39 publications

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“…The experimental findings suggest that PET-FMP hydrolysis under alkaline conditions primarily contributes to the enhanced performance. The polyester modified with a g-C 3 N 4 /TiO 2 composite was created using centrifugal electrospinning, which endowed it with photodegradable properties under sunlight [52]. The results demonstrated that the polyester altered with a 5% g-C 3 N 4 /TiO 2 mixture exhibited exceptional self-degradation capabilities in aquatic environments when exposed to sunlight.…”

Section: Heterojunction Photocatalystmentioning

confidence: 99%

Photocatalytic Technologies for Transformation and Degradation of Microplastics in the Environment: Current Achievements and Future Prospects

et al. 2023

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Microplastic (MP) pollution has emerged as a significant environmental concern, with exposure to it linked to numerous negative consequences for both ecosystems and humans. To tackle this complex issue, innovative technologies that are capable of effectively eliminating MPs from the environment are necessary. In this review, we examined a variety of bare and composite photocatalysts employed in the degradation process. An in-depth assessment of the benefits and drawbacks of each catalyst was presented. Additionally, we explored the photocatalytic mechanisms and factors influencing degradation. The review concludes by addressing the current challenges and outlining future research priorities, which will help guide efforts to mitigate MP contamination.

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Section: Heterojunction Photocatalystmentioning

confidence: 99%

Photocatalytic Technologies for Transformation and Degradation of Microplastics in the Environment: Current Achievements and Future Prospects

et al. 2023

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“…It has a moderate bandgap of about 2.7 eV and unique electronic properties, even exhibiting excellent photocatalytic activity under visible light [ 62 , 76 ]. For example, a cationic dyeable polyester modified with the g-C 3 N 4 /TiO 2 photocatalyst was synthesized by centrifugal electrospinning and exhibited a photodegradable function under solar illumination [ 77 ]. Moreover, the cationic dyeable polyester modified with 5% g-C 3 N 4 /TiO 2 displayed excellent self-degradation in a water environment under solar illumination.…”

Section: Nanomaterials For Photocatalytic Plastic Conversionmentioning

confidence: 99%

Nanomaterials for Advanced Photocatalytic Plastic Conversion

Kim,

Youn

2023

Molecules

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As the disposal of waste plastic emerges as a societal problem, photocatalytic waste plastic conversion is attracting significant attention. Ultimately, for a sustainable future, the development of an eco-friendly plastic conversion technology is essential for breaking away from the current plastic use environment. Compared to conventional methods, photocatalysis can be a more environmentally friendly option for waste plastic reprocessing because it uses sunlight as an energy source under ambient temperature and pressure. In addition to this, waste plastics can be upcycled (i.e., converted into useful chemicals or fuels) to enhance their original value via photocatalytic methods. Among various strategies for improving the efficiency of the photocatalytic method, nanomaterials have played a pivotal role in suppressing charge recombination. Hence, in recent years, attempts have been made to introduce nanomaterials/nanostructures into photocatalytic plastic conversion on the basis of advances in material-based studies using simple photocatalysts. In line with this trend, the present review examines the nanomaterials/nanostructures that have been recently developed for photocatalytic plastic conversion and discusses the direction of future development.

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“…[ 7 ] Depolymerization for polyester is in great demand with an energy‐efficient process and diverse high‐value‐added monomer recovery for environmentally friendly recycling. [ 8 ]…”

Section: Introductionmentioning

confidence: 99%

From Polyester Plastics to Diverse Monomers via Low‐Energy Upcycling

Ji,

Meng,

et al. 2024

Advanced Science

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Polyester plastics, constituting over 10% of the total plastic production, are widely used in packaging, fiber, single‐use beverage bottles, etc. However, their current depolymerization processes face challenges such as non‐broad spectrum recyclability, lack of diversified high‐value‐added depolymerization products, and crucially high energy consumption. Herein, an efficient strategy is developed for dismantling the compact structure of polyester plastics to achieve diverse monomer recovery. Polyester plastics undergo swelling and decrystallization with a low depolymerization energy barrier via synergistic effects of polyfluorine/hydrogen bonding, which is further demonstrated via density functional theory calculations. The swelling process is elucidated through scanning electron microscopy analysis. Obvious destruction of the crystalline region is demonstrated through X‐ray crystal diffractometry curves. PET undergoes different aminolysis efficiently, yielding nine corresponding high‐value‐added monomers via low‐energy upcycling. Furthermore, four types of polyester plastics and five types of blended polyester plastics are closed‐loop recycled, affording diverse monomers with exceeding 90% yields. Kilogram‐scale depolymerization of real polyethylene terephthalate (PET) waste plastics is successfully achieved with a 96% yield.

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Photocatalytic-Driven Self-Degradation of Polyester Microplastics Under Solar Light

Cited by 12 publications

References 39 publications

Photocatalytic Technologies for Transformation and Degradation of Microplastics in the Environment: Current Achievements and Future Prospects

Photocatalytic Technologies for Transformation and Degradation of Microplastics in the Environment: Current Achievements and Future Prospects

Nanomaterials for Advanced Photocatalytic Plastic Conversion

From Polyester Plastics to Diverse Monomers via Low‐Energy Upcycling

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