Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157778 - 157778
Опубликована: Ноя. 1, 2024
Язык: Английский
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159810 - 159810
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2
Small, Год журнала: 2024, Номер unknown
Опубликована: Сен. 2, 2024
Abstract Electrochemical upcycling of end‐of‐life polyethylene terephthalate (PET) using renewable electricity offers a route to generate valuable chemicals while processing plastic wastes. However, it remains huge challenge design an electrocatalyst with reliable structure‐property relationships for PET valorization. Herein, spinel Co 3 O 4 rich oxygen vacancies improved activity toward formic acid (FA) production from hydrolysate is reported. Experimental investigations combined theoretical calculations reveal that incorporation V into not only promotes the generation reactive hydroxyl species (OH * ) at adjacent tetrahedral 2+ (Co2+ Td), but also induces electronic structure transition octahedral 3+ (Co3+ Oh) Oh), which typically functions as highly‐active catalytic sites ethylene glycol (EG) chemisorption. Moreover, enlarged Co‐O covalency induced by facilitates electron transfer EG OH via Co2+ Oh‐O‐Co2+ Td interaction and following C─C bond cleavage direct oxidation glyoxal intermediate pathway. As result, ‐Co catalyst exhibits high half‐cell oxidation, Faradaic efficiency (91%) productivity (1.02 mmol cm −2 h −1 FA. Lastly, demonstrated hundred gram‐scale formate crystals can be produced real‐world bottles two‐electrode electroreforming, yield 82%.
Язык: Английский
Процитировано
7
Advanced Fiber Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 10, 2025
Язык: Английский
Процитировано
1
Materials Science and Engineering R Reports, Год журнала: 2024, Номер 162, С. 100881 - 100881
Опубликована: Ноя. 23, 2024
Язык: Английский
Процитировано
4
Eco-Environment & Health, Год журнала: 2025, Номер unknown, С. 100139 - 100139
Опубликована: Фев. 1, 2025
Ionic liquid-catalyzed methanolysis emerges as an efficient technique for transforming PET into premium-grade dimethyl terephthalate (DMT). However, incomplete depolymerization remains a major obstacle to the further industrial application of IL-catalyzed methanolysis. The proposed method utilized carbonate (DMC) solvent complete waste under mild conditions, resulting in pure DMT and ethylene (EC) within 2.5 h. use 1-ethyl-3-methylimidazolium acetate ([EMIm][OAc]) IL catalyst significantly enhanced reaction efficiency. Spectroscopic analyses using 1H NMR FT-IR confirmed pivotal role [EMIm][OAc] establishing multiple hydrogen bonds with reactants (PET, DMC, MeOH) intermediate [ethylene glycol (EG)] during catalytic process. This system exhibited remarkable performance, achieving conversion PET, which resulted production EC yields 99% 91%, respectively. Moreover, this versatile approach is applicable upcycling wide variety commercial polyesters polycarbonates, underscoring its potential comprehensive solution plastic management.
Язык: Английский
Процитировано
0
Materials Horizons, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
A paired electrolysis system was constructed to synchronously valorize nitrate wastewater and upgrade polyethylene terephthalate, utilizing oxygen-vacancy-rich Co 3 O 4 as the cathode Cu-doped Ni(OH) 2 anode, respectively.
Язык: Английский
Процитировано
0
Crystals, Год журнала: 2025, Номер 15(4), С. 293 - 293
Опубликована: Март 24, 2025
The growing plastic waste crisis calls for innovative and sustainable solutions that go beyond traditional recycling methods. Electrochemical upcycling has emerged as a promising approach converting plastics into valuable chemicals, fuels, functional materials. Recent advancements in electrochemical strategies valorization focus on key catalysts, reaction mechanisms, process efficiencies. studies place special emphasis new techniques aimed at improving selectivity, energy efficiency, scalability. Additionally, integrating renewable sources optimizing electrode materials have significantly enhanced sustainability. This review specifically focuses recent research, which addresses the challenges of waste.
Язык: Английский
Процитировано
0
Green Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
We achieved the conversion of waste PET into TPA and hydrogen energy under mildly acidic conditions (100 °C; acid concentration <2.5 mol L −1 ).
Язык: Английский
Процитировано
0
Science for energy and environment., Год журнала: 2025, Номер unknown, С. 4 - 4
Опубликована: Март 27, 2025
Review Upcycling of Waste Plastics into Value-Added Chemicals Jin Xu and Jing Zhang * State Key Laboratory Chemical Engineering, East China University Science Technology, 130 Meilong Road, Shanghai 200237, Correspondence: [email protected] Received: 8 November 2024; Revised: 22 January 2025; Accepted: 24 March Published: 27 2025 Abstract: The rapid increase in plastic production has led to a severe waste crisis, driving the development various recycling technologies mitigate this growing issue. However, these often encounter substantial economic environmental challenges their implementation. An increasingly attractive alternative is chemical upcycling, which can transform plastics value-added chemicals. This review systematically examines upcycling applicable major commercial plastics, including polyethylene terephthalate (PET), polyolefins, polystyrene (PS), polyvinyl chloride (PVC). We focus on key strategies such as solvolysis, catalytic pyrolysis, hydrocracking hydrogenolysis, along with some emerging approaches electrocatalysis photooxidation, aiming summarize trends plastics.
Язык: Английский
Процитировано
0
Chem Catalysis, Год журнала: 2025, Номер unknown, С. 101336 - 101336
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0