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The main roadblocks of current plastic recycling technologies include low\u2010quality recycled plastics and inefficient degradation under harsh conditions, which highlights the urgent need to develop efficient and sustainable recycling processes. Herein, for the first time, a strategy is developed using bio\u2010based solvent dihydrolevoglucosenone (Cyrene) for efficient recycling of waste PET\u2010to\u2010polymer or monomer. In this study, Cyrene effectively dissolves PET at 165\u2009\u00b0C within 20\u2009min. Furthermore, PET dissolved in Cyrene and regenerated by ethanol as an antisolvent, exhibiting excellent chemical and thermal stability with minimal degradation. Cyrene also functions as a cosolvent for the alkaline hydrolysis of PET, resulting in \u2248100% PET degradation to terephthalic acid (TPA) with a yield of 98.2% within 18\u2009min at 80\u2009\u00b0C. The presence of Cyrene enhances the interface compatibility between PET and solvent, while the hydroxyl groups in EG form hydrogen bonds with Cyrene, facilitating the interaction between PET and NaOH. Overall, this study contributes to the advancement of solvent\u2010based recycling strategies for the cost\u2010effective recovery of PET waste.<\/jats:p>","DOI":"10.1002\/cssc.202501352","type":"journal-article","created":{"date-parts":[[2025,9,3]],"date-time":"2025-09-03T12:14:10Z","timestamp":1756901650000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Efficient Recovery and Fast Hydrolysis of Polyethylene Terephthalate by Dihydrolevoglucosenone (Cyrene)"],"prefix":"10.1002","volume":"18","author":[{"given":"Lulu","family":"Deng","sequence":"first","affiliation":[{"name":"College of Environmental and Resource Sciences Zhejiang University  Hangzhou Zhejiang 310058 China"},{"name":"Zhejiang Key Laboratory of Low\u2010Carbon Intelligent Synthetic Biology School of Engineering Westlake University  Hangzhou Zhejiang 310030 China"},{"name":"Institute of Advanced Technology Westlake Institute for Advanced Study  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