商品化学品
材料科学
电催化剂
聚对苯二甲酸乙二醇酯
对苯二甲酸
格式化
乙二醇
化学工程
氢氧化钾
催化作用
蒸汽重整
聚酯纤维
有机化学
电极
化学
电化学
复合材料
制氢
工程类
物理化学
作者
Hua Zhou,Yue Ren,Zhenhua Li,Ming Xu,Ye Wang,Ruixiang Ge,Xianggui Kong,Lirong Zheng,Haohong Duan
标识
DOI:10.1038/s41467-021-25048-x
摘要
Abstract Plastic wastes represent a largely untapped resource for manufacturing chemicals and fuels, particularly considering their environmental and biological threats. Here we report electrocatalytic upcycling of polyethylene terephthalate (PET) plastic to valuable commodity chemicals (potassium diformate and terephthalic acid) and H 2 fuel. Preliminary techno-economic analysis suggests the profitability of this process when the ethylene glycol (EG) component of PET is selectively electrooxidized to formate (>80% selectivity) at high current density (>100 mA cm −2 ). A nickel-modified cobalt phosphide (CoNi 0.25 P) electrocatalyst is developed to achieve a current density of 500 mA cm −2 at 1.8 V in a membrane-electrode assembly reactor with >80% of Faradaic efficiency and selectivity to formate. Detailed characterizations reveal the in-situ evolution of CoNi 0.25 P catalyst into a low-crystalline metal oxy(hydroxide) as an active state during EG oxidation, which might be responsible for its advantageous performances. This work demonstrates a sustainable way to implement waste PET upcycling to value-added products.
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