Depolymerization of waste poly(ethylene terephthalate) into bis(2-hydroxyethyl) terephthalate: Catalytic glycolysis mechanism and kinetics DOI
Maoxin Li, Wenxing Chen, Shichang Chen

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157778 - 157778

Published: Nov. 1, 2024

Language: Английский

Electrochemical upcycling strategy for polyethylene terephthalate plastic coupled with efficient hydrogen production DOI
Xingye Lu, Yuhao Guo,

Hui Fu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159810 - 159810

Published: Jan. 1, 2025

Language: Английский

Citations

2
Persulfate-Based Advanced Oxidation Reforming of Polyethylene Terephthalate Fiber into Formate via Singlet Oxygen Activation DOI
Luyao Zhang, Li Wang, J.T. Chen

et al.

Advanced Fiber Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Language: Английский

Citations

1
Unraveling the Impact of Oxygen Vacancy on Electrochemical Valorization of Polyester Over Spinel Oxides DOI

Sailei Kang,

Xuyun Guo,

Dan Xing

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 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%.

Language: Английский

Citations

7
Targeted conversion of waste PET into dimethyl terephthalate and ethylene carbonate under metal-free conditions DOI Creative Commons
Minghao Zhang,

Yijin Lu,

Zhuo Wang

et al.

Eco-Environment & Health, Journal Year: 2025, Volume and Issue: unknown, P. 100139 - 100139

Published: Feb. 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.

Language: Английский

Citations

0
Efficient Co-production of Ammonia and Formic Acid from Nitrate and Polyester via Paired Electrolysis DOI
Mengmeng Du, Tao Sun, Xuyun Guo

et al.

Materials Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

Citations

0
Advancements in the Electrochemical Upcycling of Waste Plastics into High-Value Products DOI Creative Commons

Jin Woo Kim,

Shokouh Masoumilari,

Yeojin Park

et al.

Crystals, Journal Year: 2025, Volume and Issue: 15(4), P. 293 - 293

Published: March 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.

Language: Английский

Citations

0
Electrolytic upcycling of PET waste plastics for energy-efficient hydrogen evolution DOI
Guohao Xu, Zhaopeng Sun, Kai He

et al.

Green Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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 ).

Language: Английский

Citations

0
Upcycling of Waste Plastics into Value-Added Chemicals DOI Creative Commons
Xu Jin, Jing Zhang

Science for energy and environment., Journal Year: 2025, Volume and Issue: unknown, P. 4 - 4

Published: March 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.

Language: Английский

Citations

0
Paired electrochemical synthesis of glycolic acid and ammonia from polyester and nitrate sewage DOI
Yingxin Ma, Xuyun Guo,

Wenfang Yuan

et al.

Chem Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 101336 - 101336

Published: April 1, 2025

Language: Английский

Citations

0
Polyethylene terephthalate (PET) waste in Electrochemical applications DOI Creative Commons
Varun Donnakatte Neelalochana, Paolo Scardi, Narges Ataollahi

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116823 - 116823

Published: April 1, 2025

Language: Английский

Citations

0