Li Dani Tong, Yu He, Huang Ying
Stephen Perse Foundation, Cambridge, United Kingdom.
Laboratoire de Physique et d'Étude des Matériaux, ESPCI Paris, PSL Research University, Sorbonne Université, Centre national de la recherche scientifique, Paris, France.
Front Chem. 2023 Sep 19;11:1265556. doi: 10.3389/fchem.2023.1265556. eCollection 2023.
Plastic pollution has emerged as a pressing global concern, driven by the extensive production and consumption of plastic, resulting in over 8 billion tons of plastic waste generated to date. Conventional disposal methods have proven inadequate in effectively managing polymer waste, necessitating the exploration of novel techniques. Previous research has demonstrated the successful application of photoreforming (PR) in converting water-soluble oligomer fragments of plastics into valuable chemicals. However, an unresolved challenge remains in dealing with the insoluble oligomer fragments characterized by complex chemical structures and larger molecular sizes. In this study, we propose a facile approach that involves HPdCl-induced activation on PET substrate for PR of PET bottles. Remarkably, this method enables the production of C1-C3 compounds without the reliance on sacrificial reagents or photocatalysts. The significant findings of this study offer a practical solution to address the most formidable aspect of plastic PR, specifically targeting the insoluble oligomer fragments. Moreover, this research contributes to the advancement of effective strategies for the sustainable management of plastic waste.
塑料污染已成为一个紧迫的全球问题，这是由塑料的大量生产和消费所驱动的，迄今为止已产生了超过80亿吨的塑料垃圾。传统的处置方法已证明在有效管理聚合物废物方面存在不足，因此需要探索新技术。先前的研究表明，光重整（PR）在将塑料的水溶性低聚物片段转化为有价值的化学品方面取得了成功应用。然而，在处理具有复杂化学结构和较大分子尺寸的不溶性低聚物片段方面，仍存在一个未解决的挑战。在本研究中，我们提出了一种简便的方法，该方法涉及在PET底物上通过HPdCl诱导活化来对PET瓶进行光重整。值得注意的是，该方法能够在不依赖牺牲试剂或光催化剂的情况下生产C1 - C3化合物。本研究的重要发现为解决塑料光重整中最棘手的方面提供了一个切实可行的解决方案，特别是针对不溶性低聚物片段。此外，本研究有助于推进塑料废物可持续管理的有效策略。
