Environmental Science Advances, Год журнала: 2023, Номер 2(9), С. 1151 - 1166
Опубликована: Янв. 1, 2023
The widespread production and utilization of plastic products have become ingrained in our society, resulting a staggering amount waste, severe environmental challenges, resource depletion.
Язык: Английский
ACS Catalysis, Год журнала: 2024, Номер 14(7), С. 4865 - 4926
Опубликована: Март 18, 2024
Rapid industrialization and development have led to a tremendous increase in the use of various types plastic commodities daily life. For past several years, pollution has become global issue, posing serious threat mankind. The primary issue with increasing is lack proper management which created huge havoc environment. From initial phase waste management, been discarded, recycled, downcycled, or dumped into landfills large proportion, causing extreme damage ecosystem. Conventionally, treated via thermal processes such as pyrolysis incineration plants require amount capital and, therefore, harms aim circular economy. Chemical upcycling gaining attention high-potential catalytic strategy convert plastics, polyethylene terephthalate, polyethylene, polystyrene, etc. fuels, functionalized polymers, other value-added chemicals having direct impact on affordability viability. In this review, we focused photocatalysis, electrocatalysis, photoelectrocatalysis effective efficient technologies. These approaches can lower dependence nonrenewable resources are more environmentally friendly contrast conventional approaches. This review elaborately discusses pros cons provides detailed overview potential renewable energy-driven for conversion wastes valuable fuels commodity chemicals, along challenges future directions emerging approach treatment.
Язык: Английский
Процитировано
54
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Март 20, 2024
Abstract Only a small proportion of global plastic waste is recycled, which most mechanically recycled into lower quality materials. The alternative, chemical recycling, enables renewed production pristine materials, but generally comes at high energy cost, particularly for processes like pyrolysis. This review focuses on light-driven approaches chemically recycling and upcycling waste, with emphasis reduced consumption selective transformations not achievable heat-driven methods. We focus challenging to recycle backbone structures composed mainly C‒C bonds, lack functional groups i.e., esters or amides, that facilitate e.g., by solvolysis. discuss the use light, either in conjunction heat drive depolymerization monomers via photocatalysis transform polymers valuable molecules. structural prerequisites these are outlined, highlighting their advantages as well limitations. conclude an outlook, addressing key challenges, opportunities, provide guidelines future photocatalyst (PC) development.
Язык: Английский
Процитировано
36
Green Carbon, Год журнала: 2024, Номер 2(1), С. 1 - 11
Опубликована: Фев. 2, 2024
Plastics are integral to numerous significant social advancements. Nonetheless, their contribution environmental pollution and climate crises cannot be disregarded, as negative impact on the environment increases with incremental production capacity demand. Concerted global action is urgently required promote green recycle of plastics prevent accumulation in mitigate carbon emissions. This review aims reveal paths development for polyester plastics, incorporating trends revolution mature commercial newly emerging biodegradable future plastics. A critical discussion was conducted current potential research areas from multiple perspectives, including raw materials, processes, recycling, propel us into a marked by sustainability.
Язык: Английский
Процитировано
28
JACS Au, Год журнала: 2024, Номер 4(8), С. 2746 - 2766
Опубликована: Авг. 8, 2024
Photocatalysis is a versatile and rapidly developing field with applications spanning artificial photosynthesis, photo-biocatalysis, photoredox catalysis in solution or supramolecular structures, utilization of abundant metals organocatalysts, sustainable synthesis, plastic degradation. In this Perspective, we summarize conclusions from an interdisciplinary workshop young principal investigators held at the Lorentz Center Leiden March 2023. We explore how diverse fields within photocatalysis can benefit one another. delve into intricate interplay between these subdisciplines, by highlighting unique challenges opportunities presented each multidisciplinary approach drive innovation lead to solutions for future. Advanced collaboration knowledge exchange across domains further enhance potential photocatalysis. Artificial photosynthesis has become promising technology solar fuel generation, instance, via water splitting CO
Язык: Английский
Процитировано
22
Advanced Materials, Год журнала: 2024, Номер 36(33)
Опубликована: Июнь 13, 2024
Abstract Plastics, renowned for their outstanding properties and extensive applications, assume an indispensable irreplaceable role in modern society. However, the ubiquitous consumption of plastic items has led to a growing accumulation waste. Unreasonable practices production, utilization, recycling plastics have substantial energy resource depletion environmental pollution. Herein, state‐of‐the‐art advancements lifecycle management are timely reviewed. Unlike typical reviews focused on recycling, this work presents in‐depth analysis entire plastics, covering whole process from synthesis, processing, ultimate disposal. The primary emphasis lies selecting judicious strategies methodologies at each stage mitigate adverse impact waste plastics. Specifically, article delineates rationale, methods, realized various stages through both physical chemical pathways. focal point is attainment optimal rates thereby alleviating ecological burden By scrutinizing aims furnish comprehensive solutions reducing pollution fostering sustainability across all facets
Язык: Английский
Процитировано
20
Science, Год журнала: 2025, Номер 387(6736), С. 874 - 880
Опубликована: Фев. 20, 2025
The reversion of vinyl polymers with carbon-carbon backbones to their monomers represents an ideal path alleviate the growing plastic waste stream. However, depolymerizing such stable materials remains a challenge, state-of-the-art methods relying on "designer" that are neither commercially produced nor suitable for real-world applications. In this work, we report main chain-initiated, visible light-triggered depolymerization directly applicable commercial containing undisclosed impurities (e.g., comonomers, additives, or dyes). By in situ generation chlorine radicals from solvent, near-quantitative (>98%) polymethacrylates could be achieved regardless synthetic route radical ionic polymerization), end group, and molecular weight (up 1.6 million daltons). possibility perform multigram-scale depolymerizations confer temporal control renders methodology versatile general recycling.
Язык: Английский
Процитировано
5
ACS Catalysis, Год журнала: 2023, Номер 13(16), С. 10968 - 10975
Опубликована: Авг. 4, 2023
Polystyrene upcycling to valuable commodity feedstocks is essential for reducing plastic waste. Photooxidative degradation has emerged as a method converting polystyrene oxidized aromatic compounds. Investigating the mechanism of photooxidative understanding pathways generating different small molecules. Here, we leveraged reactivity differences between chlorine and bromine radicals study polystyrene. While with radical yields primarily benzoic acid (50 mol %), shows an increased preference acetophenone (4 % both products). After conducting several mechanistic studies, discovered that activation 3° C–H bonds necessary form acetophenone. However, production, second hydrogen atom transfer from H–Br enables reformation methyl group on polymer chain end. Lastly, insights in hand, added exogenous sources increase concentration HBr improved yield, becoming major product. We envision our into will further enable divergent product selectivity.
Язык: Английский
Процитировано
43
Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123355 - 123355
Опубликована: Окт. 1, 2023
Although polyvinyl chloride (PVC) ranks as the third most mass-produced synthetic plastic, chemical upcycling of non-biodegradable PVC waste remains a significant challenge. Herein, carbon nanodots combined with metal-organic framework (CDs/Zr-MOF) are fabricated for photocatalytic PVC. Specifically, ultra-small-sized CDs (~2.0 nm) encapsulated into Zr-MOF pores via mild pyrolysis strategy. The maintained MOF structure facilitates charge/mass transfer and improves surface-to-volume ratio active sites CDs. CDs/Zr-MOF exhibits high activity conversion ~76.5% towards acetic acid yield ~14%. mechanism investigation indicates generated •OH radicals can efficiently trigger cleavage C-Cl/C-C bonds Moreover, reduction energy barrier hydroxylation reaction rate-limiting step contributed to improved performance. This work offers feasible method fabricating nanoparticle-embedded MOF-based photocatalysts provides new insights plastics.
Язык: Английский
Процитировано
38
Nanoscale, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
This review highlights recent advancements in TiO 2 photocatalysts, emphasizing key strategies to enhance their performance for environmental remediation and energy conversion technologies.
Язык: Английский
Процитировано
17
Chem Catalysis, Год журнала: 2024, Номер 4(3), С. 100902 - 100902
Опубликована: Янв. 25, 2024
Язык: Английский
Процитировано
16