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Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate
Polyethylene terephthalate (PET) is the most produced polyester plastic; its waste has a disruptive impact on the environment and ecosystem. Here, we report a catalytic depolymerization of PET into bis(2-hydroxyethyl) terephthalate (BHET) using molecule oxygen (O(2))(−)assisted in defect-rich ZnO. A...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10440522/ https://www.ncbi.nlm.nih.gov/pubmed/37609634 http://dx.doi.org/10.1016/j.isci.2023.107492 |
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author | Cao, Jingjing Lin, Yuheng Zhou, Tianpeng Wang, Wei Zhang, Quanxing Pan, Bingcai Jiang, Wei |
author_facet | Cao, Jingjing Lin, Yuheng Zhou, Tianpeng Wang, Wei Zhang, Quanxing Pan, Bingcai Jiang, Wei |
author_sort | Cao, Jingjing |
collection | PubMed |
description | Polyethylene terephthalate (PET) is the most produced polyester plastic; its waste has a disruptive impact on the environment and ecosystem. Here, we report a catalytic depolymerization of PET into bis(2-hydroxyethyl) terephthalate (BHET) using molecule oxygen (O(2))(−)assisted in defect-rich ZnO. At air, the PET conversion rate, the BHET yield, and the space-time yield are 3.5, 10.6, and 10.6 times higher than those in nitrogen, respectively. Combining structural characterization with the results of DFT calculations, we conclude that the (100) facet of defect-rich ZnO nanosheets conducive to the formation of reactive oxygen species (∗O(2)(−)) and Zn defect, promotes the PET breakage of the ester bond and thus complete the depolymerization processed. This approach demonstrates a sustainable route for PET depolymerization by molecule-assisted defect engineering. |
format | Online Article Text |
id | pubmed-10440522 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-104405222023-08-22 Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate Cao, Jingjing Lin, Yuheng Zhou, Tianpeng Wang, Wei Zhang, Quanxing Pan, Bingcai Jiang, Wei iScience Article Polyethylene terephthalate (PET) is the most produced polyester plastic; its waste has a disruptive impact on the environment and ecosystem. Here, we report a catalytic depolymerization of PET into bis(2-hydroxyethyl) terephthalate (BHET) using molecule oxygen (O(2))(−)assisted in defect-rich ZnO. At air, the PET conversion rate, the BHET yield, and the space-time yield are 3.5, 10.6, and 10.6 times higher than those in nitrogen, respectively. Combining structural characterization with the results of DFT calculations, we conclude that the (100) facet of defect-rich ZnO nanosheets conducive to the formation of reactive oxygen species (∗O(2)(−)) and Zn defect, promotes the PET breakage of the ester bond and thus complete the depolymerization processed. This approach demonstrates a sustainable route for PET depolymerization by molecule-assisted defect engineering. Elsevier 2023-07-27 /pmc/articles/PMC10440522/ /pubmed/37609634 http://dx.doi.org/10.1016/j.isci.2023.107492 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Cao, Jingjing Lin, Yuheng Zhou, Tianpeng Wang, Wei Zhang, Quanxing Pan, Bingcai Jiang, Wei Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title | Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title_full | Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title_fullStr | Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title_full_unstemmed | Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title_short | Molecular oxygen-assisted in defect-rich ZnO for catalytic depolymerization of polyethylene terephthalate |
title_sort | molecular oxygen-assisted in defect-rich zno for catalytic depolymerization of polyethylene terephthalate |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10440522/ https://www.ncbi.nlm.nih.gov/pubmed/37609634 http://dx.doi.org/10.1016/j.isci.2023.107492 |
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