Electrocatalytic Valorization of Poly(ethylene terephthalate) Plastic and CO 2 for Simultaneous Production of Formic Acid

作者：Jianying Wang, Xin Li, Maolin Wang, Ting Zhang, Xinyu Chai, Junlin Lu, Tianfu Wang, Yixin Zhao, Ding Ma · 发表于：ACS Catalysis · 年份：2022 · DOI：10.1021/acscatal.2c01128 · 被引用次数：340 · 研究领域：CO2 Reduction Techniques and Catalysts、Carbon dioxide utilization in catalysis、Electrocatalysts for Energy Conversion

The electro-reforming of polymer plastic waste and CO 2 has the merits for producing value-added chemicals and alleviating environmental pollution. Herein, we report an electrocatalytic integrating strategy for efficient valorization of poly(ethylene terephthalate) (PET) plastic and CO 2 to simultaneously produce formic acid at both anode and cathode. The NiCo 2 O 4 electrocatalyst displays a high Faradaic efficiency of 90% for formic acid production, which indicates the excellent selectivity for PET hydrolysate oxidation. By coupling the PET hydrolysate oxidation reaction with the CO 2 reduction reaction, the assembled electrolyzer exhibits a low cell voltage of 1.55 V to drive the integrated two half-reactions. Furthermore, a high Faradaic efficiency of 155% for formic acid can be achieved at a cell voltage of 1.90 V. This study suggests that electrocatalytic valorization of PET plastic coupling with CO 2 reduction could be an energy-efficient and economically viable strategy to realize the production of value-added chemicals.