Yi Wei, Liu Jing, Hu Xiao-Qiang
Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China.
Wuhan Institute of Photochemical Technology, Wuhan 430080, China.
Chem Commun (Camb). 2025 Jan 2;61(3):407-418. doi: 10.1039/d4cc05866f.
The excessive use and improper disposal of plastics have placed a significant burden on the environment. To mitigate this impact, prioritizing the chemical upcycling of plastics is crucial. Unlike traditional thermochemical upcycling, which requires harsh conditions such as high temperatures and pressures, photochemical upcycling is viewed as a more environmentally friendly and cost-effective alternative. This includes using light to promote C-H bond activation to achieve the oxidative degradation of plastics, generating various valuable small molecules, or employing light-induced C-H bond activation for post-polymerization modification of post-consumer plastics to obtain polymers with enhanced properties. These methods are highly attractive approaches within the realm of chemical upcycling. This mini-review highlights the scientific breakthroughs in upcycling polymers through oxidative degradation and post-polymerization modification visible light-driven C-H bond activation. In addition, the reaction mechanism compatibility as well as practical application have been emphatically discussed.
塑料的过度使用和不当处置给环境带来了沉重负担。为减轻这种影响，优先考虑塑料的化学升级回收至关重要。与需要高温高压等苛刻条件的传统热化学升级回收不同，光化学升级回收被视为一种更环保、更具成本效益的替代方案。这包括利用光促进碳氢键活化以实现塑料的氧化降解，生成各种有价值的小分子，或利用光诱导碳氢键活化对消费后塑料进行聚合后改性，以获得性能增强的聚合物。这些方法在化学升级回收领域是极具吸引力的途径。本综述重点介绍了通过氧化降解和聚合后改性可见光驱动碳氢键活化实现聚合物升级回收的科学突破。此外，还着重讨论了反应机理的兼容性以及实际应用。
