Nature SustainabilityLow-temperature polyethylene terephthalate upcycling by phenolic ionic liquidsXu OuHeming ZhangJi PanQinbo LiuYajuan NiuDoudou XingYanan MaYingjie ZhouFeng Yan2026-05-11Full textDOI https://doi.org/10.1038/s41893-026-01832-9