一个工程Au-MXene吸附陷阱使双通道超快速和选择性检测痕量气态元素汞。

IF 6.7 1区 化学 Q1 CHEMISTRY, ANALYTICAL
Mingze Jiao, , , Jia Chen, , , Lulu Yang, , , Qinyuan Hong, , , Yiqi Feng, , , Wenjun Huang, , , Bing Pei, , , Qianxuan Zhang, , , Qingyan Fu, , , Zan Qu, , , Naiqiang Yan, , and , Haomiao Xu*, 
{"title":"一个工程Au-MXene吸附陷阱使双通道超快速和选择性检测痕量气态元素汞。","authors":"Mingze Jiao,&nbsp;, ,&nbsp;Jia Chen,&nbsp;, ,&nbsp;Lulu Yang,&nbsp;, ,&nbsp;Qinyuan Hong,&nbsp;, ,&nbsp;Yiqi Feng,&nbsp;, ,&nbsp;Wenjun Huang,&nbsp;, ,&nbsp;Bing Pei,&nbsp;, ,&nbsp;Qianxuan Zhang,&nbsp;, ,&nbsp;Qingyan Fu,&nbsp;, ,&nbsp;Zan Qu,&nbsp;, ,&nbsp;Naiqiang Yan,&nbsp;, and ,&nbsp;Haomiao Xu*,&nbsp;","doi":"10.1021/acs.analchem.5c02853","DOIUrl":null,"url":null,"abstract":"<p >Accurate detection of trace atmospheric mercury is critical for toxicological assessment and environmental protection. However, achieving parts per billion-level sensitivity with high selectivity between gaseous elemental mercury (Hg<sup>0</sup>) and oxidized mercury (Hg<sup>2+</sup>) remains a significant challenge. Here, we present a novel dual-channel enrichment trap system that selectively captures Hg<sup>0</sup> by using a layered Au-MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>) composite as the sorption trap. This composite demonstrates exceptional selectivity for Hg<sup>0</sup>, with a selectivity ratio of up to 76.7 over Hg<sup>2+</sup>, and achieves 99.7% ± 0.3% (<i>n</i> = 3) sorption efficiency for ppb-level Hg<sup>0</sup> within 30 min at room temperature. Complete desorption is achieved in just 90 s at 300 °C, demonstrating a response time of 45 s for Hg<sup>0</sup> detection through the dual-electrothermal Hg<sup>0</sup> channel. The Au–Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> preconcentration cartridge exhibits excellent moisture resistance, high-temperature stability, and long-term durability. Density functional theory (DFT) calculations reveal that the built-in electric field at the Au–Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> interface accelerates electron transfer, reducing preconcentration and regeneration times. This technology integrates seamlessly with the cold vapor atomic absorption spectrophotometer (CVAAS) method to form a mercury dual-channel continuous emission measurement system (Hg DCEMS), ensuring highly selective and precise trace Hg<sup>0</sup> detection. This advancement provides a device for accurately measuring the Hg<sup>0</sup> concentration, enabling better mercury pollution control.</p>","PeriodicalId":27,"journal":{"name":"Analytical Chemistry","volume":"97 39","pages":"21366–21375"},"PeriodicalIF":6.7000,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An Engineered Au-MXene Sorption Trap Enables Dual-Channel Ultrafast and Selective Detection of Trace Gaseous Elemental Mercury\",\"authors\":\"Mingze Jiao,&nbsp;, ,&nbsp;Jia Chen,&nbsp;, ,&nbsp;Lulu Yang,&nbsp;, ,&nbsp;Qinyuan Hong,&nbsp;, ,&nbsp;Yiqi Feng,&nbsp;, ,&nbsp;Wenjun Huang,&nbsp;, ,&nbsp;Bing Pei,&nbsp;, ,&nbsp;Qianxuan Zhang,&nbsp;, ,&nbsp;Qingyan Fu,&nbsp;, ,&nbsp;Zan Qu,&nbsp;, ,&nbsp;Naiqiang Yan,&nbsp;, and ,&nbsp;Haomiao Xu*,&nbsp;\",\"doi\":\"10.1021/acs.analchem.5c02853\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Accurate detection of trace atmospheric mercury is critical for toxicological assessment and environmental protection. However, achieving parts per billion-level sensitivity with high selectivity between gaseous elemental mercury (Hg<sup>0</sup>) and oxidized mercury (Hg<sup>2+</sup>) remains a significant challenge. Here, we present a novel dual-channel enrichment trap system that selectively captures Hg<sup>0</sup> by using a layered Au-MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub>) composite as the sorption trap. This composite demonstrates exceptional selectivity for Hg<sup>0</sup>, with a selectivity ratio of up to 76.7 over Hg<sup>2+</sup>, and achieves 99.7% ± 0.3% (<i>n</i> = 3) sorption efficiency for ppb-level Hg<sup>0</sup> within 30 min at room temperature. Complete desorption is achieved in just 90 s at 300 °C, demonstrating a response time of 45 s for Hg<sup>0</sup> detection through the dual-electrothermal Hg<sup>0</sup> channel. The Au–Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> preconcentration cartridge exhibits excellent moisture resistance, high-temperature stability, and long-term durability. Density functional theory (DFT) calculations reveal that the built-in electric field at the Au–Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> interface accelerates electron transfer, reducing preconcentration and regeneration times. This technology integrates seamlessly with the cold vapor atomic absorption spectrophotometer (CVAAS) method to form a mercury dual-channel continuous emission measurement system (Hg DCEMS), ensuring highly selective and precise trace Hg<sup>0</sup> detection. This advancement provides a device for accurately measuring the Hg<sup>0</sup> concentration, enabling better mercury pollution control.</p>\",\"PeriodicalId\":27,\"journal\":{\"name\":\"Analytical Chemistry\",\"volume\":\"97 39\",\"pages\":\"21366–21375\"},\"PeriodicalIF\":6.7000,\"publicationDate\":\"2025-09-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analytical Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.analchem.5c02853\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.analchem.5c02853","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0

摘要

准确检测大气中痕量汞对毒理学评价和环境保护至关重要。然而,在气态单质汞(Hg0)和氧化汞(Hg2+)之间实现十亿分之一级别的高选择性灵敏度仍然是一个重大挑战。在这里,我们提出了一种新的双通道富集陷阱系统,该系统使用层状Au-MXene (Ti3C2Tx)复合材料作为吸附陷阱,选择性地捕获Hg0。该复合材料对Hg2+具有良好的选择性,对Hg2+的选择性比高达76.7,在室温下30 min内对ppb级Hg0的吸附效率达到99.7%±0.3% (n = 3)。在300°C下,只需90 s即可实现完全解吸,通过双电热Hg0通道检测Hg0的响应时间为45 s。Au-Ti3C2Tx预浓缩盒具有优异的防潮性、高温稳定性和长期耐用性。密度泛函理论(DFT)计算表明,Au-Ti3C2Tx界面的内置电场加速了电子转移,减少了预富集和再生次数。该技术与冷蒸汽原子吸收分光光度计(CVAAS)方法无缝集成,形成汞双通道连续发射测量系统(Hg DCEMS),确保高选择性和精确的痕量Hg0检测。这一进展提供了一种精确测量Hg0浓度的装置,可以更好地控制汞污染。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An Engineered Au-MXene Sorption Trap Enables Dual-Channel Ultrafast and Selective Detection of Trace Gaseous Elemental Mercury

An Engineered Au-MXene Sorption Trap Enables Dual-Channel Ultrafast and Selective Detection of Trace Gaseous Elemental Mercury

Accurate detection of trace atmospheric mercury is critical for toxicological assessment and environmental protection. However, achieving parts per billion-level sensitivity with high selectivity between gaseous elemental mercury (Hg0) and oxidized mercury (Hg2+) remains a significant challenge. Here, we present a novel dual-channel enrichment trap system that selectively captures Hg0 by using a layered Au-MXene (Ti3C2Tx) composite as the sorption trap. This composite demonstrates exceptional selectivity for Hg0, with a selectivity ratio of up to 76.7 over Hg2+, and achieves 99.7% ± 0.3% (n = 3) sorption efficiency for ppb-level Hg0 within 30 min at room temperature. Complete desorption is achieved in just 90 s at 300 °C, demonstrating a response time of 45 s for Hg0 detection through the dual-electrothermal Hg0 channel. The Au–Ti3C2Tx preconcentration cartridge exhibits excellent moisture resistance, high-temperature stability, and long-term durability. Density functional theory (DFT) calculations reveal that the built-in electric field at the Au–Ti3C2Tx interface accelerates electron transfer, reducing preconcentration and regeneration times. This technology integrates seamlessly with the cold vapor atomic absorption spectrophotometer (CVAAS) method to form a mercury dual-channel continuous emission measurement system (Hg DCEMS), ensuring highly selective and precise trace Hg0 detection. This advancement provides a device for accurately measuring the Hg0 concentration, enabling better mercury pollution control.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Analytical Chemistry
Analytical Chemistry 化学-分析化学
CiteScore
12.10
自引率
12.20%
发文量
1949
审稿时长
1.4 months
期刊介绍: Analytical Chemistry, a peer-reviewed research journal, focuses on disseminating new and original knowledge across all branches of analytical chemistry. Fundamental articles may explore general principles of chemical measurement science and need not directly address existing or potential analytical methodology. They can be entirely theoretical or report experimental results. Contributions may cover various phases of analytical operations, including sampling, bioanalysis, electrochemistry, mass spectrometry, microscale and nanoscale systems, environmental analysis, separations, spectroscopy, chemical reactions and selectivity, instrumentation, imaging, surface analysis, and data processing. Papers discussing known analytical methods should present a significant, original application of the method, a notable improvement, or results on an important analyte.
×
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:604180095
Book学术官方微信