聚乳酸
聚丙烯腈
材料科学
光催化
膜
化学工程
催化作用
纳米技术
聚合物
化学
复合材料
有机化学
生物化学
工程类
作者
Feiyan Wu,Yibo Dou,Jianchi Zhou,Jibo Qin,Tao Jiang,Yuechao Yao,Claus Hélix-Nielsen,Wenjing Zhang
标识
DOI:10.1016/j.cej.2023.144134
摘要
Catalytic upcycling of plastics is regarded as a promising way to alleviate environmental pollution and produce value-added products, while still facing huge challenges. Herein, we report a feasible strategy for synthesizing high-entropy photocatalysts-based fibrous membranes with a dual function of capturing and upcycling plastic. Polyacrylonitrile (PAN) nanofibers templates enable the growth of highly arranged high-entropy metal tungstates (FeCoNiCuZn)WO4, denoted XWO4. The effect of lattice distortion in XWO4 modulates the band gap structure and contributes to the upshift d-band center of XWO4. As a result, the modified anti-bonding state facilitates the upcycling of captured polylactic acid (PLA) towards acetic acid production, with an enhanced yield rate of 38.51 mg gcat.−1 h−1 and improved selectivity of 73 %. Thus, the developed NFs template strategy, a tunable electronic structure and exploration of the structure–function relationship provide insight into tailoring the structure and composition of HEMs for photocatalytic upcycling of plastic.
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