Layered double hydroxides: A novel nano-sorbent for solid-phase extraction

Abdolmohammad‐Zadeh, Hossein; Rezvani, Zolfaghar; Sadeghi, G.H.; Zorufi, E.

doi:10.1016/j.aca.2010.11.035

Cited by 83 publications

(32 citation statements)

References 37 publications

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“…The value for x has been reported to be in the range of 0.2-0.33 in the formation of a pure LDH phase. The anions and water molecules intercalated into the LDH interlayers can be replaced with other organic and inorganic anions [2][3][4]. Due to their suitable properties such as large specific surface area, good chemical and thermal stability, high anion exchange capacity, adsorption property, and catalytic activity, LDHs have many applications in different fields such as catalysis [5,6], photochemistry [7, 8], polymer additives [9], supercapacitors [10], anti-corrosion coatings [11], pharmaceuticals [12, 13], separation technology [14-16], electrode surface modification, and sensors [17, 18].…”

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confidence: 99%

Electrochemical synthesis of Fe/Al-layered double hydroxide on a glassy carbon electrode: application for electrocatalytic reduction of isoniazid

2015

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IntroductionAnionic clays or layered double hydroxide (LDH) materials are positively charged nano-structures. The chemical and physical properties of LDHs are very close to hydrotalcite, [Mg 6 Al 2 (OH) 16 ]CO 3 .4H 2 O, due to their structural similarities [1]. The structure of layered double hydroxides (LDHs) is based upon the structure of brucite, and the partial substitution of the divalent cations for the trivalent ones in their network that makes brucite positively charged. The positive charges appeared in the layers are neutralized by the anions existing between the layers. The general chemical formula for LDHs can be expressed as [M II 1−x M III x (OH) 2 ] x+ [A n− x/n · mH 2 O] x− , where M II represents a divalent metal such as Mg, Co, Ni, Cu, Zn, and Ca, M III is a trivalent metal such as Al, Cr, Fe, and Ga, and A n− is an anion. x is equal to the M III /(M II + M III )ratio. The value for x has been reported to be in the range of 0.2-0.33 in the formation of a pure LDH phase. The anions and water molecules intercalated into the LDH interlayers can be replaced with other organic and inorganic anions [2][3][4]. Due to their suitable properties such as large specific surface area, good chemical and thermal stability, high anion exchange capacity, adsorption property, and catalytic activity, LDHs have many applications in different fields such as catalysis [5,6], photochemistry [7, 8], polymer additives [9], supercapacitors [10], anti-corrosion coatings [11], pharmaceuticals [12, 13], separation technology [14-16], electrode surface modification, and sensors [17, 18]. Different methods have been introduced for the synthesis of LDHs such as the thermal or hydrothermal co-precipitation [19, 20], area hydrolysis [21], and the ion exchange method [22]. In addition to the aforementioned methods, novel methods including the sol-gel [23] and electrochemical [24, 25] ones have been reported for the synthesis of Abstract Fe/Al-layered double hydroxide (Fe/Al-LDH)was synthesized on a glassy carbon electrode (GCE) by a novel and simple electrochemical method. The electrochemical characterization of Fe/Al-LDH deposited on GCE was investigated in a 0.1 M NaOH solution. Moreover, the LDH film obtained was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX). The obtained results showed that Fe/ Al-LDH was generated on GCE by the electrochemical method, and that the obtained film was highly pure. The electrochemical behavior of isonicotinic acid hydrazide or isoniazid (INZ) at LDH/GCE was studied by the electrochemical techniques including cyclic voltammetry, differential pulse voltammetry, and amperometry. The obtained results indicated an excellent electrocatalytic reduction activity for the Fe/Al-LDH-modified GCE of INZ. Under the optimized conditions for determination of INZ the calibration curves are linear in the ranges of 4.9-650.0 and 4.9-770.0 μM with limit of detections of 4.0 and 7.0 μM for differential...

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Electrochemical synthesis of Fe/Al-layered double hydroxide on a glassy carbon electrode: application for electrocatalytic reduction of isoniazid

2015

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“…The use of nano-sized particles in place of micro-sized particles as the absorbent material results in higher extraction rate and faster desorption time due to particles' increased surface area to volume ratio [8]. Carbon nanotubes have been used in SPE for the detection of organic pollutants [9] and nickel-aluminium nano structured double layered hydroxide particles for the monitoring of fluoride ions [10]. Examples of planar solid phase adsorbent systems coupled to MS are more limited.…”

Section: Introductionmentioning

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Separation of fingerprint constituents using magnetic silica nanoparticles and direct on-particle SALDI-TOF-mass spectrometry

Lim

Ma²,

et al. 2011

Journal of Chromatography B

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“…And nanoscale Mg(OH) 2 particles possess large surface areas and high adsorption capacities [28][29][30]. Meanwhile, Mg(OH) 2 exhibits higher efficiency for the elution of analytes from the solid-phase extractant, resulting in an increased recovery.…”

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confidence: 99%

Preconcentration and analysis of Rhodamine B in water and red wine samples by using magnesium hydroxide/carbon nanotube composites as a solid-phase extractant

Liu

Chen

et al. 2015

J. Sep. Science

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A convenient and accurate analysis approach that combined solid-phase extraction and high-performance liquid chromatography was developed to determine the amount of Rhodamine B in red wine and Xiang-jiang river water samples. A novel composite, magnesium hydroxide/carbon nanotube composites, was synthesized and used as the solid-phase extractant for the preconcentration/analysis of Rhodamine B. Magnesium hydroxide/carbon nanotube composites, which combined the merits of carbon nanotubes and magnesium hydroxide, exhibited acceptable adsorption and desorption efficiencies for Rhodamine B. The linear range of the proposed solid-phase extraction with high-performance liquid chromatography method for Rhodamine B was 0.05-20.0 mg/L, with a limit of detection of 3.6 μg/L. The precision and reproducibility of the developed solid-phase extraction with high-performance liquid chromatography method and the batch-to-batch reproducibility of the solid-phase extractant were also validated at spiking levels of 0.5 and 2.0 mg/L. The recovery of Rhodamine B was 94.33-106.7%, and the recovery relative standard deviations of the intra- and interday precisions were ≤ 3.83 and ≤ 6.01%, respectively. The relative standard deviation of the batch-to-batch reproducibility was ≤ 7.98%.

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Layered double hydroxides: A novel nano-sorbent for solid-phase extraction

Cited by 83 publications

References 37 publications

Electrochemical synthesis of Fe/Al-layered double hydroxide on a glassy carbon electrode: application for electrocatalytic reduction of isoniazid

Electrochemical synthesis of Fe/Al-layered double hydroxide on a glassy carbon electrode: application for electrocatalytic reduction of isoniazid

Separation of fingerprint constituents using magnetic silica nanoparticles and direct on-particle SALDI-TOF-mass spectrometry

Preconcentration and analysis of Rhodamine B in water and red wine samples by using magnesium hydroxide/carbon nanotube composites as a solid-phase extractant

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