Silver nanoparticles for separation and preconcentration processes

Dastafkan, Kamran; Khajeh, Mostafa; Ghaffari‐Moghaddam, Mansour; Bohlooli, Mousa

doi:10.1016/j.trac.2014.08.017

Cited by 23 publications

(7 citation statements)

References 79 publications

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“…Their strong affinity for inorganic and organic mercury species can be utilized in extraction procedures for mercury binding. However, metallic nanoparticles containing noble metals can also be applied for the separation of other heavy metals (Li et al, 2020 ), organic species (pyrene, olefins, methylene blue) and gaseous species (NO, SO 2 ) (Dastafkan et al, 2015 ).…”

Section: Metallic Nanoparticles and Hybrid Nanomaterials Containing Metallic Nanoparticles As Sorbents For Efficient Trace Element Separamentioning

confidence: 99%

Application of Metallic Nanoparticles and Their Hybrids as Innovative Sorbents for Separation and Pre-concentration of Trace Elements by Dispersive Micro-Solid Phase Extraction: A Minireview

Hagarová

Nemček

2021

Front. Chem.

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It is indisputable that separation techniques have found their rightful place in current analytical chemistry, considering the growing complexity of analyzed samples and (ultra)trace concentration levels of many studied analytes. Among separation techniques, extraction is one of the most popular ones due to its efficiency, simplicity, low cost and short processing times. Nonetheless, research interests are directed toward the enhancement of performance of these procedures in terms of selectivity. Dispersive solid phase extraction (DSPE) represents a novel alternative to conventional solid phase extraction (SPE) which not only delivers environment-friendly extraction with less solvent consumption, but also significantly improves analytical figures of merit. A miniaturized modification of DSPE, known as dispersive micro-solid phase extraction (DMSPE), is one of the most recent trends and can be applied for the extraction of wide variety of analytes from various liquid matrices. While DSPE procedures generally use sorbents of different origin and sizes, in DMSPE predominantly nanostructured materials are required. The aim of this paper is to provide an overview of recently published original papers on DMSPE procedures in which metallic nanoparticles and hybrid materials containing metallic particles along with other (often carbon-based) constituent(s) at the nanometer level have been utilized for separation and pre-concentration of (ultra)trace elements in liquid samples. The studies included in this review emphasize the great analytical potential of procedures producing reliable results in the analysis of complex liquid matrices, where the detection of target analyte is often complicated by the presence of interfering substances.

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Section: Metallic Nanoparticles and Hybrid Nanomaterials Containing Metallic Nanoparticles As Sorbents For Efficient Trace Element Separamentioning

confidence: 99%

Application of Metallic Nanoparticles and Their Hybrids as Innovative Sorbents for Separation and Pre-concentration of Trace Elements by Dispersive Micro-Solid Phase Extraction: A Minireview

Hagarová

Nemček

2021

Front. Chem.

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“…Taking to account the sorption capacity parameter (q e ) is needed for quantitative adsorption procedure. It relates the uptake behavior to the amount of reactive adsorptive sites over the surface of nanoparticles through the following equation [70]:…”

Section: Agglomeration and Stabilization Of Agnpsmentioning

confidence: 99%

Mechanism and behavior of silver nanoparticles in aqueous medium as adsorbent

Dastafkan

Khajeh

Bohlooli

et al. 2015

Talanta

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“…Consequently, several studies have been conducted to improve the long-term stability of silver ions by adding an oxidizer, stabilizer, or a similar substance to prevent performance deterioration due to the reduction of silver ions [ 19 , 21 , 22 , 23 , 24 ]. Moreover, a method involving the use of metal nanoparticles with polarized surfaces as carriers has also been studied [ 25 , 26 ]. Electron acceptors, such as tetracyanoquinodimethane (TCNQ), p-benzoquinone (p-BQ), and ionic liquids (ILs), are required to polarize the silver nanoparticles [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of PEBAX-5513/AgBF4/BMIMBF4 Membranes for Olefin/Paraffin Separation

2020

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In this study, we investigated a poly(ether-block-amide)-5513 (PEBAX-5513)/AgBF4/1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4) composite membrane, which is expected to have a high stabilizing effect on the Ag+ ions functioning as olefin carriers in the amide group. Poly(ethylene oxide) (PEO) only consists of ether regions, whereas the PEBAX-5513 copolymer contains both ether and amide regions. However, given the brittle nature of the amide, the penetration of BMIMBF4 remains challenging. The nanoparticles did not stabilize after their formation in the long-term test, thereby resulting in a poor performance compared to previous experiments using PEO as the polymer (selectivity 3; permeance 12.3 GPU). The properties of the functional groups in the polymers were assessed using Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis, which confirmed that the properties endowed during the production of the film using the ionic liquid can impact the performance.

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Silver nanoparticles for separation and preconcentration processes

Cited by 23 publications

References 79 publications

Application of Metallic Nanoparticles and Their Hybrids as Innovative Sorbents for Separation and Pre-concentration of Trace Elements by Dispersive Micro-Solid Phase Extraction: A Minireview

Application of Metallic Nanoparticles and Their Hybrids as Innovative Sorbents for Separation and Pre-concentration of Trace Elements by Dispersive Micro-Solid Phase Extraction: A Minireview

Mechanism and behavior of silver nanoparticles in aqueous medium as adsorbent

Preparation and Characterization of PEBAX-5513/AgBF4/BMIMBF4 Membranes for Olefin/Paraffin Separation

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