Highly selective Hg2+ colorimetric sensor using green synthesized and unmodified silver nanoparticles

Farhadi, Khalil; Forough, Mehrdad; Molaei, Rahim; Hajizadeh, Salahaddin; Rafipour, Aysan

doi:10.1016/j.snb.2011.11.052

Cited by 363 publications

(129 citation statements)

References 42 publications

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“…(18) Mercury toxicity is a serious threat to living beings. It is a highly toxic element and can affect the human nervous system and cause severe damage to the brain, kidney, heart, lungs, and immune system.…”

Section: Introductionmentioning

confidence: 99%

“…It is a highly toxic element and can affect the human nervous system and cause severe damage to the brain, kidney, heart, lungs, and immune system. (18)(19)(20) Because of this, the development of efficient sensors for the detection of mercury is of considerable interest. Several sensors based on electrochemical measurements, color, and fluorescence detection have been reported.…”

Section: Introductionmentioning

confidence: 99%

“…Several sensors based on electrochemical measurements, color, and fluorescence detection have been reported. (18,(21)(22)(23) Sophisticated instruments such as inductively coupled plasma mass spectrometer (ICP-MS), (24) inductively coupled plasma optical emission spectrometer (ICP-OES), (25) cold vapor atomic absorption spectrometer (CVAAS), (26) stripping voltammeter, (27) and atomic fluorescence spectrometer (AFS) (28) are being used for the analysis of Hg 2+ . Aside from their high sensitivity and selectivity for the detection of Hg 2+ , these instruments are highly expensive and nonportable, sample preparation is time-consuming, and trained personnel are required for their operation.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these limitations and to avoid complicated instrumentation, several methods based on colorimetry and probes of noble metals have been developed for the easy detection of Hg 2+ . (18,20,21,29,30) In this study, the one-pot, simple, and rapid green synthesis of highly stable and colloidal AgNPs has been achieved using Panax ginseng root extract as a reducing and capping agent. The synthesized AgNPs were investigated for their structural and functional properties and used as a material for the detection of Hg 2+ based on the dissolution of AgNPs and the formation of Ag-Hg amalgam.…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Tagad¹,

Hyun²,

Rucha³

et al. 2017

Sensors and Materials

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Exploring biomaterials/molecules as a reducing/capping agent for the synthesis of metal nanoparticles has set a new trend in green nanotechnology with improved environmental safety. Herein, a facile, one-pot, and green synthesis of silver nanoparticles (AgNPs) was achieved using Panax ginseng root extract that was obtained from the root powder as a cost-effective and environmentfriendly biomaterial. Optical, functional, and morphological characteristics of the synthesized AgNPs were determined using ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR) spectrophotometers, transmission electron microscopy (TEM), and atomic force microscopy (AFM). The synthesized AgNPs were used for the detection of Hg 2+ by obtaining the absorption spectrum of the compound as a function of Hg 2+ concentration, which resulted in a decrease in absorption peak intensity with a slight blue shift. The AgNP solution decolored upon dissolution due to the formation of an Ag-Hg amalgam. The sensing characteristics were found to be linear when tested from 10 µM to 1 mM Hg 2+ concentration and the detection limit was estimated as 5 µM. To check the selectivity of the sensor towards Hg 2+ , the sensor response was measured for different heavy metals such as K + , Na + , Cu 2+ , Ni 2+ , Ca 2+ , Zn 2+ , Mg 2+ , and Mn 2+ , at 10 mM concentrations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Tagad¹,

Hyun²,

Rucha³

et al. 2017

Sensors and Materials

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show abstract

“…The limits of detection (LOD) was estimated to be 5 ppb. Based on the same principle, Farhadi et al [56] used unmodified Ag NPs as a colorimetric probe to detect Hg 2+ with an LOD of 2.2×10 −6 M. Bera et al [57] synthesized polyhedral Ag NPs and used them as colorimetric probes for detecting Hg 2+ . As shown in Fig.…”

Section: Ag Nps-based Colorimetric Assaysmentioning

confidence: 99%

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Duan

Zhan

2015

Sci. China Mater.

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Mercuric ion (Hg 2+ ), released from both natural and industrial sources, has severe adverse effects on human health and the environment even at very low concentrations. It is very important to develop a rapid and economical method for the detection of Hg 2+ with high sensitivity and selectivity. Nanomaterials with unique size and shape-dependent optical properties are attractive sensing materials. The application of nanomaterials to design optical sensors for Hg 2+ provides a powerful method for the trace detection of Hg 2+ in the environment, because these optical sensors are simple, rapidly responsive, cost-effective and highly sensitive. This review summarizes the recent advances on the development of optical assays for Hg 2+ in aqueous solution by using functionalized nanomaterials (including noble metal nanoparticles, fluorescent metal nanoclusters, semiconductor quantum dots and carbon nanodots). Detection strategies based on the Hg 2+ -induced changes in spectral absorbance, fluorescence intensity and surface-enhanced Raman scattering signals were described. And the design principles for each optical assay were presented. In addition, the future challenge and the prospect of the development of nanomaterial optical sensors for Hg 2+ detection were also discussed.

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Multifunctional Silver, Copper and Zero Valent Iron Metallic Nanoparticles for Wastewater Treatment

Daniel

Malathi

Balasubramanian

et al. 2014

Application of Nanotechnology in Water Research

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Highly selective Hg2+ colorimetric sensor using green synthesized and unmodified silver nanoparticles

Cited by 363 publications

References 42 publications

Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Green Synthesis of Silver Nanoparticles Using Panax Ginseng Root Extract for the Detection of Hg2+

Recent developments on nanomaterials-based optical sensors for Hg2+ detection

Multifunctional Silver, Copper and Zero Valent Iron Metallic Nanoparticles for Wastewater Treatment

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