Efficient photoreforming of plastic waste using a high-entropy oxide catalyst

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Catalysis Pub Date : 2024-10-24 DOI:10.1016/j.jcat.2024.115808

Thanh Tam Nguyen , Kaveh Edalati

引用次数: 0

Abstract

Simultaneous catalytic hydrogen (H₂) production and plastic waste degradation under light, known as photoreforming, is a novel approach to green fuel production and efficient waste management. Here, we use a high-entropy oxide (HEO), a new family of catalysts with five or more principal cations in their structure, for plastic degradation and simultaneous H₂ production. The HEO shows higher activity than that of P25 TiO₂, a benchmark photocatalyst, for the degradation of polyethylene terephthalate (PET) plastics in water. Several valuable products are produced by photoreforming of PET bottles and microplastics including H₂, terephthalate, ethylene glycol and formic acid. The high activity is attributed to the diverse existence of several cations in the HEO lattice, lattice defects, and appropriate charge carrier lifetime. These findings suggest that HEOs possess high potential as new catalysts for concurrent plastic waste conversion and clean H₂ production.

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使用高熵氧化物催化剂对塑料废弃物进行高效光转化

在光照下同时催化制氢（H2）和降解塑料废物（称为光转化）是一种新型的绿色燃料生产和高效废物管理方法。在这里，我们使用一种高熵氧化物（HEO）来降解塑料并生产氢气。HEO 是一种新型催化剂，其结构中含有五个或五个以上的主阳离子。在降解水中的聚对苯二甲酸乙二酯（PET）塑料方面，高熵氧化物的活性高于基准光催化剂 P25 TiO2。PET 瓶和微塑料的光转化可产生多种有价值的产品，包括 H2、对苯二甲酸酯、乙二醇和甲酸。高活性归因于 HEO 晶格中存在多种阳离子、晶格缺陷和适当的电荷载流子寿命。这些研究结果表明，作为新型催化剂，HEOs 在同时转化塑料废物和生产清洁的 H2 方面具有很高的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.