Ultrasensitive colorimetric sensor for tracking of Hg2+ in aqueous solution.
Saved in:
| Title: | Ultrasensitive colorimetric sensor for tracking of Hg2+ in aqueous solution. |
|---|---|
| Authors: | He, Linjun1 (AUTHOR), Xue, Fanjie1 (AUTHOR), Li, Jie1 (AUTHOR), Huang, Rong1 (AUTHOR), Xu, Jun1,2 (AUTHOR), He, Yi1 (AUTHOR), Wang, Mengjun1 (AUTHOR) mjwang@mail.xhu.edu.cn |
| Source: | Microchemical Journal. Oct2025, Vol. 217, pN.PAG-N.PAG. 1p. |
| Subjects: | Environmental monitoring, Environmental engineering, Reactive oxygen species, Environmental sampling, Catalytic activity |
| Abstract: | Mercury ions (Hg2+) are a highly toxic and bioaccumulative heavy metal, posing an increasingly serious risk to both human health and environmental safety. Developing a sensitive and selective strategy for Hg2+ analysis continues to be a substantial challenge. Herein, a visual colorimetric sensing approach for detecting Hg2+ was established using a platinum-based nanozyme (Pt@gC 3 N 4) with robust oxidase-like activity. The Hg2+-triggered enhancement of catalytic activity in Pt@gC 3 N 4 may be attributed to the formation of a Pt Hg amalgam layer on the surface of Pt@gC 3 N 4 , which altered its physicochemical properties and increased the efficiency of oxygen decomposition into reactive oxygen species (ROS, O 2 •−). The Pt@gC 3 N 4 can efficiently catalyze the oxidation of the colorless substrate N, N-diethyl- p -phenylenediamine (DPD) to produce the pink compound oxDPD. This pink compound featured two significant absorption peaks at wavelengths of 510 nm and 551 nm. As a result, Hg2+ can be visually detected with an ultra-low detection limit (23 nM), a rapid response time, and exceptional selectivity. Furthermore, the satisfactory recoveries (96.28 %–104.25 %) and high accuracy (RSD ≤ 2.68 %) achieved in the quantitative visualization of spiked water samples demonstrate the suitability of this sensing platform for rapid monitoring of environmental samples. These findings provide a promising paradigm for the development of innovative nanozymes in biosensing, catalysis, and environmental engineering. [Display omitted] • Pt@gC 3 N 4 with peroxide-like activity was successfully synthesized for the first time. • The colorimetric sensing strategy for detecting Hg2+ was first constructed. • This sensor for Hg2+ analysis with the LOD of 23 nM. • This sensor can detect Hg2+ in real samples with satisfactory results. [ABSTRACT FROM AUTHOR] |
| Copyright of Microchemical Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 188025128 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Ultrasensitive colorimetric sensor for tracking of Hg2+ in aqueous solution. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22He%2C+Linjun%22">He, Linjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xue%2C+Fanjie%22">Xue, Fanjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jie%22">Li, Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Rong%22">Huang, Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Jun%22">Xu, Jun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Yi%22">He, Yi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Mengjun%22">Wang, Mengjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mjwang@mail.xhu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Microchemical+Journal%22">Microchemical Journal</searchLink>. Oct2025, Vol. 217, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Environmental+monitoring%22">Environmental monitoring</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+engineering%22">Environmental engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Reactive+oxygen+species%22">Reactive oxygen species</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+sampling%22">Environmental sampling</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Mercury ions (Hg2+) are a highly toxic and bioaccumulative heavy metal, posing an increasingly serious risk to both human health and environmental safety. Developing a sensitive and selective strategy for Hg2+ analysis continues to be a substantial challenge. Herein, a visual colorimetric sensing approach for detecting Hg2+ was established using a platinum-based nanozyme (Pt@gC 3 N 4) with robust oxidase-like activity. The Hg2+-triggered enhancement of catalytic activity in Pt@gC 3 N 4 may be attributed to the formation of a Pt Hg amalgam layer on the surface of Pt@gC 3 N 4 , which altered its physicochemical properties and increased the efficiency of oxygen decomposition into reactive oxygen species (ROS, O 2 •−). The Pt@gC 3 N 4 can efficiently catalyze the oxidation of the colorless substrate N, N-diethyl- p -phenylenediamine (DPD) to produce the pink compound oxDPD. This pink compound featured two significant absorption peaks at wavelengths of 510 nm and 551 nm. As a result, Hg2+ can be visually detected with an ultra-low detection limit (23 nM), a rapid response time, and exceptional selectivity. Furthermore, the satisfactory recoveries (96.28 %–104.25 %) and high accuracy (RSD ≤ 2.68 %) achieved in the quantitative visualization of spiked water samples demonstrate the suitability of this sensing platform for rapid monitoring of environmental samples. These findings provide a promising paradigm for the development of innovative nanozymes in biosensing, catalysis, and environmental engineering. [Display omitted] • Pt@gC 3 N 4 with peroxide-like activity was successfully synthesized for the first time. • The colorimetric sensing strategy for detecting Hg2+ was first constructed. • This sensor for Hg2+ analysis with the LOD of 23 nM. • This sensor can detect Hg2+ in real samples with satisfactory results. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Microchemical Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=188025128 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.microc.2025.115055 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Environmental monitoring Type: general – SubjectFull: Environmental engineering Type: general – SubjectFull: Reactive oxygen species Type: general – SubjectFull: Environmental sampling Type: general – SubjectFull: Catalytic activity Type: general Titles: – TitleFull: Ultrasensitive colorimetric sensor for tracking of Hg2+ in aqueous solution. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: He, Linjun – PersonEntity: Name: NameFull: Xue, Fanjie – PersonEntity: Name: NameFull: Li, Jie – PersonEntity: Name: NameFull: Huang, Rong – PersonEntity: Name: NameFull: Xu, Jun – PersonEntity: Name: NameFull: He, Yi – PersonEntity: Name: NameFull: Wang, Mengjun IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 0026265X Numbering: – Type: volume Value: 217 Titles: – TitleFull: Microchemical Journal Type: main |
| ResultId | 1 |
