Zheng Yeqin, Fan Ping, Guo Rongjie, Liu Xiaohui, Zhou Xiantai, Xue Can, Ji Hongbing
School of Chemical Engineering and Technology, Sun Yat-Sen University Zhuhai 519082 P.R. China
Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University Guangzhou 510275 P.R. China
RSC Adv. 2023 Apr 24;13(19):12663-12669. doi: 10.1039/d3ra02279j.
As the global consumption of plastics keeps increasing, the accumulated plastics in the natural environment have threatened the survival of human beings. Photoreforming, as a simple and low-energy way, could transform wasted plastic into fuel and small organic chemicals at ambient temperature. However, the previously reported photocatalysts have some drawbacks, such as low efficiency, containing precious or toxic metal. Herein, a noble-free, non-toxic, and easy prepared mesoporous ZnInS photocatalyst has been applied in photoreforming of polylactic acid (PLA), polyethylene terephthalate (PET) and polyurethane (PU), generating small organic chemicals and H fuel under simulated sunlight. Plastic was degraded into small organic molecules after the pretreatment, which futher acted as the substrate for photoreforming. Mesoporous ZnInS exhibits high H production efficiency, strong redox ability, and long-term photostability. Furthermore, mesoporous ZnInS could overcome the hindrances of dyes and additives of realistic wasted plastic bags and bottles with high decomposition efficiency, providing an efficient and sustainable strategy for the upcycling of wasted plastics.
随着全球塑料消费量持续增长，自然环境中累积的塑料已威胁到人类的生存。光重整作为一种简单且低能耗的方法，能够在常温下将废弃塑料转化为燃料和小分子有机化学品。然而，先前报道的光催化剂存在一些缺点，如效率低、含有贵金属或有毒金属。在此，一种不含贵金属、无毒且易于制备的介孔ZnInS光催化剂已应用于聚乳酸（PLA）、聚对苯二甲酸乙二酯（PET）和聚氨酯（PU）的光重整，在模拟太阳光下生成小分子有机化学品和氢气燃料。预处理后塑料降解为小分子有机分子，这些小分子进一步作为光重整的底物。介孔ZnInS表现出高的产氢效率、强的氧化还原能力和长期的光稳定性。此外，介孔ZnInS能够克服实际废弃塑料袋和塑料瓶中染料和添加剂的阻碍，具有高分解效率，为废弃塑料的升级回收提供了一种高效且可持续的策略。
