Electrochemical upcycling of plastic waste to high-value chemicals is an ideal approach for the valorization of waste resources. In this study, we report the electro-reforming of polyethylene terephthalate (PET) plastic hydrolysate to valuable formate and hydrogen. Pd-deposited hierarchical aligned NiTe nanoarrays on Ni foam (Pd-NiTe/NF) is developed for oxidation of PET hydrolysate at anode and hydrogen evolution at cathode, with the overpotentials of 0.019 and 1.35 V at 10 and 100 mA cm, respectively. In co-electrolysis system, the Pd-NiTe/NF exhibits high Faradaic efficiencies for concurrent production of value-added formate (95.6%) and H (98.6%). The high activity and stability of Pd-NiTe/NF can be ascribed to that the interfacial heterostructures by incorporating Pd atoms and the strongly interfacial electronic interactions of between Pd and NiTe can synergistically promote PET-derived ethylene glycol to formate oxidation and hydrogen evolution. This work shows promising prospect in electro-reforming PET plastic waste to valuable chemicals.

中文翻译：

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聚对苯二甲酸乙二醇酯塑料电催化升级为甲酸，并通过分级钯掺杂 NiTe 纳米阵列实现节能制氢

将塑料废物电化学升级为高价值化学品是废物资源增值的理想方法。在这项研究中，我们报告了聚对苯二甲酸乙二醇酯（PET）塑料水解产物电重整为有价值的甲酸盐和氢气。镍泡沫上沉积钯的分层排列的 NiTe 纳米阵列 (Pd-NiTe/NF) 开发用于阳极氧化 PET 水解产物和阴极析氢，在 10 和 100 mA cm 下的过电势分别为 0.019 和 1.35 V。在共电解系统中，Pd-NiTe/NF 在同时生产增值甲酸盐 (95.6%) 和 H (98.6%) 时表现出高法拉第效率。 Pd-NiTe/NF的高活性和稳定性可归因于引入Pd原子的界面异质结构以及Pd和NiTe之间的强界面电子相互作用可以协同促进PET衍生的乙二醇的甲酸氧化和析氢。这项工作展示了将 PET 塑料废料电重整为有价值的化学品的广阔前景。