Solar-light-activated periodate for degradation and detoxification of highly toxic 6PPD-quinone at environmental levels

Long Chen, Jingrun Hu, Alistair G. L. Borthwick, Weiliang Sun, Huixuan Zhang, Dantong Jia, Wen Liu
{"title":"Solar-light-activated periodate for degradation and detoxification of highly toxic 6PPD-quinone at environmental levels","authors":"Long Chen, Jingrun Hu, Alistair G. L. Borthwick, Weiliang Sun, Huixuan Zhang, Dantong Jia, Wen Liu","doi":"10.1038/s44221-024-00236-3","DOIUrl":null,"url":null,"abstract":"Degradation and detoxication of highly toxic 6PPD-quinone remain great challenges due to its stable structure. Here we establish a solar-light-driven IO4− activation system for efficient degradation of 6PPD-quinone at environmental concentration levels (10–100 μg l−1), with residual concentration below 5.7 ng l−1 (detection limit) within 30 min. IO3• was determined as the primary reactive species after IO4− activation for cleavage of the highly toxic quinone structure. Single electron transfer is the most favourable route for IO3• attacking, in which single electrons achieve self-driven transfer from 6PPD-quinone to IO3• due to the maintenance of spatial inversion symmetry generated by dipole moments. Femtosecond transient absorption spectra confirmed the formation of 6PPD-quinone cationic radical (6PPD-quinone•+), which was the key reaction intermediate. This study proposes a promising technology for degradation and detoxification of highly toxic 6PPD-quinone in water and brings deep insight into the reaction mechanism within IO4− activation systems. There is a pressing need to develop effective treatment technologies for 6PPD-quinone, a newly discovered micropollutant, given its prevalent presence in water. The proposed advanced oxidation of IO4− activation under solar light irradiation achieves efficient degradation of 6PPD-quinone at environmental concentration levels.","PeriodicalId":74252,"journal":{"name":"Nature water","volume":"2 5","pages":"453-463"},"PeriodicalIF":0.0000,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature water","FirstCategoryId":"1085","ListUrlMain":"https://www.nature.com/articles/s44221-024-00236-3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Degradation and detoxication of highly toxic 6PPD-quinone remain great challenges due to its stable structure. Here we establish a solar-light-driven IO4− activation system for efficient degradation of 6PPD-quinone at environmental concentration levels (10–100 μg l−1), with residual concentration below 5.7 ng l−1 (detection limit) within 30 min. IO3• was determined as the primary reactive species after IO4− activation for cleavage of the highly toxic quinone structure. Single electron transfer is the most favourable route for IO3• attacking, in which single electrons achieve self-driven transfer from 6PPD-quinone to IO3• due to the maintenance of spatial inversion symmetry generated by dipole moments. Femtosecond transient absorption spectra confirmed the formation of 6PPD-quinone cationic radical (6PPD-quinone•+), which was the key reaction intermediate. This study proposes a promising technology for degradation and detoxification of highly toxic 6PPD-quinone in water and brings deep insight into the reaction mechanism within IO4− activation systems. There is a pressing need to develop effective treatment technologies for 6PPD-quinone, a newly discovered micropollutant, given its prevalent presence in water. The proposed advanced oxidation of IO4− activation under solar light irradiation achieves efficient degradation of 6PPD-quinone at environmental concentration levels.

Abstract Image

Abstract Image

太阳光激活的高碘酸盐在环境水平上降解和解毒剧毒 6PPD-quinone
由于高毒性 6PPD-quinone 结构稳定,其降解和解毒仍然是一项巨大挑战。在这里,我们建立了一个太阳光驱动的 IO4- 活化系统,可在环境浓度水平(10-100 μg l-1)下高效降解 6PPD-quinone,30 分钟内残留浓度低于 5.7 ng l-1(检测限)。IO3- 被确定为 IO4- 激活后裂解剧毒醌结构的主要反应物。单电子转移是 IO3- 攻击的最有利途径,其中由于偶极矩产生的空间反转对称性的维持,单电子实现了从 6PPD-quinone 到 IO3- 的自驱动转移。飞秒瞬态吸收光谱证实了关键反应中间体 6PPD-quinone 阳离子自由基(6PPD-quinone-+)的形成。这项研究为降解和解毒水中的剧毒 6PPD-quinone 提出了一种前景广阔的技术,并深入揭示了 IO4- 活化体系中的反应机理。6PPD-quinone 是一种新发现的微污染物,鉴于其在水中的普遍存在,迫切需要开发有效的处理技术。在太阳光照射下,拟议的 IO4-活化高级氧化技术可在环境浓度水平上实现 6PPD-quinone 的高效降解。
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
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信