Cr2C MXene quantum dots for selective detection of mercury ions

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-06-02 DOI:10.1016/j.optmat.2025.117218

Madhushree R, Kalathiparambil Rajendra Pai Sunajadevi, Dephan Pinheiro

{"title":"Cr2C MXene quantum dots for selective detection of mercury ions","authors":"Madhushree R, Kalathiparambil Rajendra Pai Sunajadevi, Dephan Pinheiro","doi":"10.1016/j.optmat.2025.117218","DOIUrl":null,"url":null,"abstract":"<div><div>Mercury (Hg), a highly toxic environmental contaminant that presents significant ecological and health risks, even at low concentrations. There is an urgent need for precise and sensitive methods for detecting Hg<sup>2+</sup> ions in the environment. In recent years, a new class of 2D layered materials, MXene, has gained enormous attention due to their unique properties, such as high surface area, oxidation resistance, thermal and chemical stability, electrical and thermal conductivity. This study presents the synthesis and characterization of Cr<sub>2</sub>C MXene quantum dots (MQDs) derived from Cr<sub>2</sub>CT<sub>x</sub> nanolayered MXene sheets via the probe-sonication method. The Cr<sub>2</sub>C-MQDs were characterized using XRD, FTIR, SEM-EDS mapping, and Zeta potential analysis. The vibrant green fluorescence material, Cr<sub>2</sub>C-MQDs, was investigated for Hg<sup>2+</sup> detection, which exhibited high selectivity and stability with a limit of detection of 30.7 nM. The sensing mechanism is attributed to the strong affinity of Cr<sub>2</sub>C MXene quantum dots for Hg<sup>2+</sup> ions.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"166 ","pages":"Article 117218"},"PeriodicalIF":3.8000,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925346725005786","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Mercury (Hg), a highly toxic environmental contaminant that presents significant ecological and health risks, even at low concentrations. There is an urgent need for precise and sensitive methods for detecting Hg²⁺ ions in the environment. In recent years, a new class of 2D layered materials, MXene, has gained enormous attention due to their unique properties, such as high surface area, oxidation resistance, thermal and chemical stability, electrical and thermal conductivity. This study presents the synthesis and characterization of Cr₂C MXene quantum dots (MQDs) derived from Cr₂CT_x nanolayered MXene sheets via the probe-sonication method. The Cr₂C-MQDs were characterized using XRD, FTIR, SEM-EDS mapping, and Zeta potential analysis. The vibrant green fluorescence material, Cr₂C-MQDs, was investigated for Hg²⁺ detection, which exhibited high selectivity and stability with a limit of detection of 30.7 nM. The sensing mechanism is attributed to the strong affinity of Cr₂C MXene quantum dots for Hg²⁺ ions.

查看原文本刊更多论文

用于选择性检测汞离子的Cr2C MXene量子点

汞（Hg），一种剧毒的环境污染物，即使浓度很低也会对生态和健康造成重大风险。目前迫切需要一种精确灵敏的检测环境中Hg2+离子的方法。近年来，一类新的二维层状材料MXene由于其独特的性能，如高表面积，抗氧化性，热稳定性和化学稳定性，导电性和导热性，受到了极大的关注。本研究采用探针-超声方法合成并表征了由Cr2CTx纳米层MXene片衍生的Cr2C MXene量子点（MQDs）。采用XRD、FTIR、SEM-EDS图谱和Zeta电位分析对cr2c - mqd进行了表征。荧光材料Cr2C-MQDs具有较高的选择性和稳定性，检测限为30.7 nM。该传感机制归因于Cr2C MXene量子点对Hg2+离子的强亲和力。

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

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.