2025-09-05 コペンハーゲン大学
Figure: Margarita Poderyte.
＜関連情報＞
- https://news.ku.dk/all_news/2025/09/scientists-transform-plastic-waste-into-efficient-co2-capture-materials/
- https://www.science.org/doi/10.1126/sciadv.adv5906
ポリエチレンテレフタレート廃プラスチックの二酸化炭素捕捉への転用 Repurposing polyethylene terephthalate plastic waste to capture carbon dioxide
Margarita Poderyte, Rodrigo Lima, Peter Illum Golbækdal, Dennis Wilkens Juhl, […] , and Ji-Woong Lee
Science Advances Published:5 Sep 2025
DOI:https://doi.org/10.1126/sciadv.adv5906
Abstract
Polyethylene terephthalate (PET) is a ubiquitous polymer with a lack of viable waste management solutions besides mechanical recycling, incineration, and landfilling. Herein, we demonstrate a chemical upcycling of PET waste into materials for CO2 capture via aminolysis. The aminolysis reaction products—a bis-aminoamide (BAETA) and oligomers—exhibit high CO2 capture capacity up to 3.4 moles per kilogram as a stand-alone organic solid material. BAETA shows strong chemisorption featuring high selectivity for CO2 capture from flue gas (5 to 20% CO2) and ambient air (~400 parts per million CO2) under humid conditions. Our thermally stable material (>250°C) enables CO2 capture at high temperatures (up to 170°C) for multiple cycles. Scalability of the material production was demonstrated by performing aminolysis of untreated consumer waste PET of 1 kilogram. Our approach introduces a simple and straightforward solution that can address both plastic waste and carbon dioxide, offering a potential pathway toward net negative emissions.
