Electro-Upcycling Polyethylene Glycol Aqueous Solutions in a Proton Exchange Membrane Electrolyser

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2024-12-15 DOI:10.1016/j.electacta.2024.145524

Nicolas Grimaldos-Osorio, Essyllt Louarn, Chantal Lorentz, Fabrizio Sordello, Monica Passananti, Olivier Boyron, Manel Taam, Vincent Monteil, Jesús González-Cobos, Angel Caravaca, Philippe Vernoux

{"title":"Electro-Upcycling Polyethylene Glycol Aqueous Solutions in a Proton Exchange Membrane Electrolyser","authors":"Nicolas Grimaldos-Osorio, Essyllt Louarn, Chantal Lorentz, Fabrizio Sordello, Monica Passananti, Olivier Boyron, Manel Taam, Vincent Monteil, Jesús González-Cobos, Angel Caravaca, Philippe Vernoux","doi":"10.1016/j.electacta.2024.145524","DOIUrl":null,"url":null,"abstract":"This study addresses the electro-upcycling, at low temperature and neutral pH conditions, of aqueous solutions of polyethylene glycol (PEG). For this purpose, a Proton-Exchange Membrane (PEM) reactor with Pt/C-based electrodes has been used. The electrooxidation performances of ethylene glycol (EG) and PEG were evaluated for various concentrations in aqueous solutions, temperatures and PEG molecular weights (MW). PEG was successfully electro-oxidized from 0.4 V, reaching current densities above 100 mA cm-2 at 0.8 V and 80 °C using oligoethylene glycols up to 400 g mol-1. Size-exclusion chromatography and NMR analysis evidenced the possibility to cleave –C–O–C– bonds of heavy PEG (1000, 4000 g mol-1), proving the possibility of depolymerizing PEG and recovering the monomer at low cell voltages and low temperatures. The production and purity of hydrogen in the cathode compartment of the electrolyser was confirmed by mass spectrometry. These results may open new perspectives in the development of electro-upcycling of PEG in water effluents.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"35 1","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.electacta.2024.145524","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}

引用次数: 0

Abstract

This study addresses the electro-upcycling, at low temperature and neutral pH conditions, of aqueous solutions of polyethylene glycol (PEG). For this purpose, a Proton-Exchange Membrane (PEM) reactor with Pt/C-based electrodes has been used. The electrooxidation performances of ethylene glycol (EG) and PEG were evaluated for various concentrations in aqueous solutions, temperatures and PEG molecular weights (MW). PEG was successfully electro-oxidized from 0.4 V, reaching current densities above 100 mA cm^-2 at 0.8 V and 80 °C using oligoethylene glycols up to 400 g mol^-1. Size-exclusion chromatography and NMR analysis evidenced the possibility to cleave –C–O–C– bonds of heavy PEG (1000, 4000 g mol^-1), proving the possibility of depolymerizing PEG and recovering the monomer at low cell voltages and low temperatures. The production and purity of hydrogen in the cathode compartment of the electrolyser was confirmed by mass spectrometry. These results may open new perspectives in the development of electro-upcycling of PEG in water effluents.

Abstract Image

查看原文本刊更多论文

质子交换膜电解槽中聚乙二醇水溶液的电循环利用

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.