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Upcycling of Waste PET Fibers and Fabrics via Surface Engineering: Surface Aminolysis-Assisted Functionalization with Catalytic Nanoparticles
http://hdl.handle.net/2237/0002012767
http://hdl.handle.net/2237/00020127675b233956-bff9-407f-8664-0e8ea3e544d0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Nakanishi_et_al_Chem_Eng_J_2025.pdf (3.5 MB)
Download is available from 2027/5/1.
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| アイテムタイプ | itemtype_ver1(1) | |||||||||||
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| 公開日 | 2025-05-20 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Upcycling of Waste PET Fibers and Fabrics via Surface Engineering: Surface Aminolysis-Assisted Functionalization with Catalytic Nanoparticles | |||||||||||
| 言語 | en | |||||||||||
| 著者 |
Nakanishi, Miku
× Nakanishi, Miku
× Chan, Kayee
× Zinchenko, Anatoly
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| アクセス権 | ||||||||||||
| アクセス権 | embargoed access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_f1cf | |||||||||||
| 権利 | ||||||||||||
| 権利情報 | © 2025. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||||||||
| 言語 | en | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Chemical recycling plays a crucial role in the conversion of plastic waste into valuable materials that prevents environmental pollution and conserve fossil resources. While most chemical recycling approaches focus on polymer decomposition into small molecules, the direct modification of waste plastic materials to introduce new functionalities has been largely unexplored. In this study, polyethylene terephthalate (PET) fibers and fabrics were recycled into a catalytic material by aminolysis of the PET surface, adsorption of noble metal ion precursors onto amines, and reduction of the anchored metal ions to nanoparticles (NPs). Treatment of PET fibers with 50% solution of diethylenetriamine at 100 °C for 20–80 min allows for the control of PET amination degree in the range of 21–766 μmol/m2 amine surface density with minimal PET fiber surface degradation. The aminated fibers served as templates for the coordination and in situ reduction of metal ions, resulting in the formation of uniformly distributed Au, Ag, and Pd NPs. In particular, metallization with gold yielded ultrafine Au NPs of 2–3 nm, whereas the metalized fibers exhibited superior catalytic performance in the reduction of nitroaromatics with highest rate constant of 0.339 min−1. The metalized PET fibers demonstrated excellent reusability during ten repeating catalytic cycles and recyclability of gold by selective dissolution in aqua regia. The metallization treatment was also successfully extended to pure PET and blended PET fabrics. Compared to conventional depolymerization-based PET recycling, aminolysis-assisted metallization of waste PET fibers is a greener approach due to lower chemicals consumption yet offers opportunities for a robust design of value-added catalytic materials, with the scope of such metallized fibers extending to sensors, antimicrobial surfaces, and other advanced fields. | |||||||||||
| 言語 | en | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Elsevier | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| タイプ | journal article | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | AM | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||
| 関連情報 | ||||||||||||
| 関連タイプ | isVersionOf | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1016/j.cej.2025.161839 | |||||||||||
| 収録物識別子 | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 1385-8947 | |||||||||||
| 書誌情報 |
en : Chemical Engineering Journal 巻 511, p. 161839, 発行日 2025-05 |
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| ファイル公開日 | ||||||||||||
| 日付 | 2027-05-01 | |||||||||||
| 日付タイプ | Available | |||||||||||
