Yuxiang Wang , Kesheng Liu , Fulai Liu , Chuxuan Liu , Rui Shi , Yong Chen
{"title":"选择性电重整废聚对苯二甲酸乙酯衍生乙二醇制备长期稳定的C2化学品†","authors":"Yuxiang Wang , Kesheng Liu , Fulai Liu , Chuxuan Liu , Rui Shi , Yong Chen","doi":"10.1039/d3gc01486j","DOIUrl":null,"url":null,"abstract":"<div><p>Electro-oxidation of ethylene glycol (EG) derived from polyethylene terephthalate (PET) into value-added C<sub>2</sub> products is essential for the electro-reforming of waste PET. However, achieving high selectivity and stability in the EG oxidation reaction (EGOR) remains a significant challenge. Herein, we successfully fabricated segregation-less Pd<sub>1</sub>Ag<sub>1</sub> alloy nanoparticles (NPs) that can be used for the electro-reforming of waste PET into glycolate C<sub>2</sub> products with high selectivity (97%) and long-term stability (>500 h). Electrochemical measurements and <em>in situ</em> Fourier-transform infrared spectroscopy (FTIR) results reveal that the addition of Ag atoms improves glycolate selectivity by reducing its adsorption on Pd active sites. In addition, the surface *OH species generated on Ag sites facilitate the rapid oxidation of toxic carbonyl species, thereby improving the stability of Pd sites. Therefore, the synergistic effects of Pd<sub>1</sub>Ag<sub>1</sub> NPs provide an effective way for practical electro-reforming of real-world waste PET into value-added products with high selectivity and stability.</p></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Selective electro-reforming of waste polyethylene terephthalate-derived ethylene glycol into C2 chemicals with long-term stability†\",\"authors\":\"Yuxiang Wang , Kesheng Liu , Fulai Liu , Chuxuan Liu , Rui Shi , Yong Chen\",\"doi\":\"10.1039/d3gc01486j\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Electro-oxidation of ethylene glycol (EG) derived from polyethylene terephthalate (PET) into value-added C<sub>2</sub> products is essential for the electro-reforming of waste PET. However, achieving high selectivity and stability in the EG oxidation reaction (EGOR) remains a significant challenge. Herein, we successfully fabricated segregation-less Pd<sub>1</sub>Ag<sub>1</sub> alloy nanoparticles (NPs) that can be used for the electro-reforming of waste PET into glycolate C<sub>2</sub> products with high selectivity (97%) and long-term stability (>500 h). Electrochemical measurements and <em>in situ</em> Fourier-transform infrared spectroscopy (FTIR) results reveal that the addition of Ag atoms improves glycolate selectivity by reducing its adsorption on Pd active sites. In addition, the surface *OH species generated on Ag sites facilitate the rapid oxidation of toxic carbonyl species, thereby improving the stability of Pd sites. Therefore, the synergistic effects of Pd<sub>1</sub>Ag<sub>1</sub> NPs provide an effective way for practical electro-reforming of real-world waste PET into value-added products with high selectivity and stability.</p></div>\",\"PeriodicalId\":78,\"journal\":{\"name\":\"Green Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.3000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Green Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S1463926223006453\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1463926223006453","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Selective electro-reforming of waste polyethylene terephthalate-derived ethylene glycol into C2 chemicals with long-term stability†
Electro-oxidation of ethylene glycol (EG) derived from polyethylene terephthalate (PET) into value-added C2 products is essential for the electro-reforming of waste PET. However, achieving high selectivity and stability in the EG oxidation reaction (EGOR) remains a significant challenge. Herein, we successfully fabricated segregation-less Pd1Ag1 alloy nanoparticles (NPs) that can be used for the electro-reforming of waste PET into glycolate C2 products with high selectivity (97%) and long-term stability (>500 h). Electrochemical measurements and in situ Fourier-transform infrared spectroscopy (FTIR) results reveal that the addition of Ag atoms improves glycolate selectivity by reducing its adsorption on Pd active sites. In addition, the surface *OH species generated on Ag sites facilitate the rapid oxidation of toxic carbonyl species, thereby improving the stability of Pd sites. Therefore, the synergistic effects of Pd1Ag1 NPs provide an effective way for practical electro-reforming of real-world waste PET into value-added products with high selectivity and stability.
期刊介绍：
Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.
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