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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A novel functionalized silver nanoparticles solid chemosensor for detection of Hg(II) in aqueous media
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A novel functionalized silver nanoparticles solid chemosensor for detection of Hg(II) in aqueous media

机译:一种新型的功能化银纳米颗粒固体化学传感器,用于检测水性介质中的Hg(II)

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摘要

We report a simple strategy for the fabrication of a highly selective and sensitive Hg(II) chemosensor based on HMS-Ag composite functionalized rhodamine derivative (R). The prepared chemosensor HMS-Ag-R was characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), UV-vis spectrum and Fourier transform infrared spectroscopy (FT-IR). HMS-Ag-R has both fluorescence and colorimetry performance, and it can realize onsite and real-time detection of Hg(II) with a high sensitivity (0.7 ppb) in aqueous solution. In high concentration of mercury ions, the fluorescence intensity of HMS-Ag-R against Hg(II) sufficiently showed a typical sigmoidal shape. Moreover, HMS-Ag-R presents excellent anti-disturbance ability when exposed to a series of competitive cations such as Ag(I), K(I), Li(I), Na(I), Ba(II), Ca(II), Cd(II), Co(II), Cu(II), Mg(II), Mn(II), Ni(II), Pb(II) and Zn(II). It can be applied to the determination of Hg(II) in aqueous media. The interaction between HMS-Ag-R and Hg(II) could occur in a short time (90 s). Importantly, HMS-Ag-R could be regenerated with tetrapropyl ammonium hydroxide (TPAOH) solution.
机译:我们报告了基于HMS-Ag复合功能化罗丹明衍生物(R)的高选择性和高灵敏度Hg(II)化学传感器的制造的简单策略。通过透射电子显微镜(TEM),X射线粉末衍射(XRD),紫外可见光谱和傅里叶变换红外光谱(FT-IR)对所制备的化学传感器HMS-Ag-R进行表征。 HMS-Ag-R同时具有荧光和比色性能,可以实现水溶液中Hg(II)的现场和实时检测,灵敏度高(0.7 ppb)。在高浓度的汞离子中,HMS-Ag-R对Hg(II)的荧光强度足以显示出典型的S形。此外,HMS-Ag-R在暴露于一系列竞争性阳离子(例如Ag(I),K(I),Li(I),Na(I),Ba(II),Ca( II),Cd(II),Co(II),Cu(II),Mg(II),Mn(II),Ni(II),Pb(II)和Zn(II)。它可用于测定水性介质中的Hg(II)。 HMS-Ag-R和Hg(II)之间的相互作用可能会在短时间内(90 s)发生。重要的是,HMS-Ag-R可以用四丙基氢氧化铵(TPAOH)溶液再生。

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