Smartphone-enabled mesoporous silica nanotube chemosensors for quick and selective mercury detection in water and cosmetics

IF 5.3 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Arabian Journal of Chemistry Pub Date : 2024-09-02 DOI:10.1016/j.arabjc.2024.105984
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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.

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基于智能手机的介孔二氧化硅纳米管化学传感器,用于快速、选择性地检测水和化妆品中的汞
水和化妆品中普遍存在的汞对健康构成了极大的威胁,因此有必要开发一种原位监测和提取汞离子的方法。本研究介绍了一种利用具有独特蚯蚓状结构的介孔二氧化硅纳米管(MSNTs)的新方法,这种纳米管具有广阔的表面积,是吸附 Hg2+ 离子发色团(N,N,N,N′-四甲基-4,4′-二氨基二苯甲酮)的理想材料。这种结构能够快速、可见地检测有毒汞,其颜色从黄色过渡到绿色,肉眼很容易辨别。汞纳米传感器(MNS)的灵敏度非常高,通过数字图像分析法确定的检测限为 1.9 × 10-8 M,通过分光光度法确定的检测限为 4.9 × 10-8 M,两者都远远低于世界卫生组织的饮用水标准。MNS 的检测阈值很低,而且经过简单再生后就可重复使用,因此可作为初步水检测的有效工具。研究结果表明,MNS 只需要 10 毫克的测量值,它为汞离子的实时可视化提供了一个很有前景的解决方案,从而加强了水和化妆品的安全措施。
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来源期刊
Arabian Journal of Chemistry
Arabian Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
10.80
自引率
3.30%
发文量
763
审稿时长
63 days
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.
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