{"title":"Smartphone-enabled mesoporous silica nanotube chemosensors for quick and selective mercury detection in water and cosmetics","authors":"Albandary Almahri , Nashwa M. El-Metwaly","doi":"10.1016/j.arabjc.2024.105984","DOIUrl":null,"url":null,"abstract":"<div><p>The pervasive presence of mercury in water and cosmetics poses significant health risks, necessitating the development of a method for the in-situ monitoring and extraction of mercury ions. This study introduces a novel approach utilizing Mesoporous Silica Nanotubes (MSNTs) with a unique worm-like structure, providing an expansive surface area ideal for the adsorption of a Hg<sup>2+</sup> ion chromophore, N,N,N,N′-Tetramethyl-4,4′-diaminobenzophenone. This configuration enables rapid and visible detection of toxic mercury, with a color transition from yellow to green that is easily discernible by the naked eye. The sensitivity of the Mercury nano-sensor (MNS) is remarkably high, with a detection limit of 1.9 × 10<sup>-8</sup> M as determined by digital image analysis, and 4.9 × 10<sup>-8</sup> M via spectrophotometric methods—both well below the WHO guidelines for drinking water. The MNS’s low detection threshold, coupled with its reusability after simple regeneration, positions it as an effective tool for preliminary water testing. The findings suggest that the MNS, requiring only 10 mg for measurements, offers a promising solution for the real-time visualization of mercury ions, enhancing safety measures in water and cosmetic products.</p></div>","PeriodicalId":249,"journal":{"name":"Arabian Journal of Chemistry","volume":"17 10","pages":"Article 105984"},"PeriodicalIF":5.3000,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1878535224003861/pdfft?md5=1e88a3faefb0fde669c554a7ef41b0f6&pid=1-s2.0-S1878535224003861-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Arabian Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1878535224003861","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The pervasive presence of mercury in water and cosmetics poses significant health risks, necessitating the development of a method for the in-situ monitoring and extraction of mercury ions. This study introduces a novel approach utilizing Mesoporous Silica Nanotubes (MSNTs) with a unique worm-like structure, providing an expansive surface area ideal for the adsorption of a Hg2+ ion chromophore, N,N,N,N′-Tetramethyl-4,4′-diaminobenzophenone. This configuration enables rapid and visible detection of toxic mercury, with a color transition from yellow to green that is easily discernible by the naked eye. The sensitivity of the Mercury nano-sensor (MNS) is remarkably high, with a detection limit of 1.9 × 10-8 M as determined by digital image analysis, and 4.9 × 10-8 M via spectrophotometric methods—both well below the WHO guidelines for drinking water. The MNS’s low detection threshold, coupled with its reusability after simple regeneration, positions it as an effective tool for preliminary water testing. The findings suggest that the MNS, requiring only 10 mg for measurements, offers a promising solution for the real-time visualization of mercury ions, enhancing safety measures in water and cosmetic products.
期刊介绍:
The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry.
The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.