Review of nanomaterials as sorbents in solid-phase extraction for environmental samples

Azzouz, Abdelmonaim; Kailasa, Suresh Kumar; Lee, Sang Soo; Rascón, Andrés J.; Ballesteros, Evaristo; Zhang, Ming; Kim, Ki‐Hyun

doi:10.1016/j.trac.2018.08.009

Cited by 274 publications

(82 citation statements)

References 87 publications

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“…The availability of pure and fresh water is influenced by many factors including the high rate of population growth. It is estimated that approximately 2.7 billion people in numerous countries face scarcity of clean water [18,21].…”

Section: Introductionmentioning

confidence: 99%

Application of Chemically Exfoliated Boron Nitride Nanosheets Doped with Co to Remove Organic Pollutants Rapidly from Textile Water

et al. 2020

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Two-dimensional layered materials doped with transition metals exhibit enhanced magnetization and improved catalytic stability during water treatment leading to potential environmental applications across several industrial sectors. In the present study, cobalt (Co)-doped boron nitride nanosheets (BN-NS) were explored for such an application. Chemical exfoliation process was used to exfoliate BN-NS and the hydrothermal route was adopted to incorporate Co dopant in various concentrations (e.g., 2.5, 5, 7.5, and 10 wt%). X-ray diffraction (XRD) study indicated that crystallinity improved upon doping with the formation of a hexagonal phase of the synthesized material. Selected area electron diffraction (SAED) confirmed enhanced crystallinity, which corroborates XRD results. Interlayer spacing was evaluated through a high-resolution transmission electron microscope (HR-TEM) equipped with Gatan digital micrograph software. Compositional and functional group analysis was undertaken with energy dispersive Xray (EDS) and Fourier transform infrared (FTIR) spectroscopy, respectively. Field emission scanning electron microscope (FE-SEM) and HR-TEM were utilized to probe surface morphologies of prepared samples. Bonding modes in the sample were identified through Raman analysis. Optical properties were examined using UV-vis spectroscopy. Photoluminescence spectra were acquired to estimate the separation and recombination of excitons. Magnetic properties were studied by means of hysteresis loop acquired using VSM measurements. Methylene blue dye was degraded with as-prepared host and doped nanosheets used as catalysts and investigated through absorption spectra ranging from 250 to 800 nm. The experimental results of this study indicate that Co-doped BN-NS showed enhanced magnetic properties and can be used to degrade dyes present as an effluent in industrial wastewater.

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Section: Introductionmentioning

confidence: 99%

Application of Chemically Exfoliated Boron Nitride Nanosheets Doped with Co to Remove Organic Pollutants Rapidly from Textile Water

et al. 2020

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“…ZrO 2 . Zirconium (IV) oxide is used as the catalyst (due to the greater number of acidic centers on the surface) in the monoclinic modification [163], as the carrier for catalysts (due to the high thermal stability) in the tetragonal modification [164], and as the sorbent in the amorphous phase or at a low degree of crystallinity [165,166].…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

“…One of the most unusual and promising properties of zirconium (IV) oxide particles is their sorption capacity both to anions and cations, which allows considering nanosized ZrO 2 and materials based on them as instruments for improving the ecological state of the environment. In this case, the hydrated zirconium (IV) oxide that is in the amorphous state has the highest sorption capacity [165,166]. The specificity of ZrO 2 usage as the sorbent is that it has high selectivity to polyvalent anions (chromates, borates, sulfates, phosphates, arsenates, etc.)…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

Dontsova

Nahirniak

Астрелін

2019

Journal of Nanomaterials

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The features of the properties and creation of nanocomposite metal oxide materials, especially TiO2, ZnO, SnO2, ZrO2, and Fe3O4, and their applications for ecology are considered in the article. It is shown that nanomaterials based on them are very promising for use in the ecological direction, especially as sorbents, photocatalysts, and sensitive layers of gas sensors. The crystallochemical characteristics, surface structure, and surface phenomena that occur when they enter the water and air environment are given for these metal oxides, and it is shown that they play a significant role in obtaining the sorption and catalytic characteristics of these nanomaterials. Particular attention is paid to the dispersion and morphology of metal oxide particles by which their physical and chemical properties can be controlled. Synthesis methods of metal oxide nanomaterials and ways for creating of nanocomposites based on them are characterized, and it is noted that there are many methods for obtaining individual nanoparticles of metal oxides with certain properties. The main task is the correct selection and testing of parameters. The prospects for the production of metal oxide nanocomposites and their application for environmental applications are noted, which will lead to a fundamentally new class of materials and new environmental technologies with their participation.

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“…In order to extract target analytes from large sample volumes or difficult-to-handle samples, magnetic solid phase extraction (MSPE) employing magnetically responsive adsorbents was developed by Safarikova and Safarik in 1999. This approach has several advantages over traditional solid phase extraction performed in cartridges, namely: (a) it provides a rapid and simple analyte separation that avoids the need for centrifugation or filtration steps, (b) it avoids time-consuming and tedious on-column SPE procedures, (c) MSPE can also be used for samples containing suspended solids, (d) the magnetically responsive adsorbents may have high selectivity, even when complex biological and environmental samples are analyzed, (e) minimal amount of organic solvents for elution is necessary, (f) since the majority of sample impurities are diamagnetic, they do not interfere with magnetic particles during the magnetic separation step, and (g) automation of the whole process is possible, which leads to rapid, selective, sensitive, and repeatable methods for routine analyte determinations (Safarik & Safarikova 2012;Azzouz et al 2018). The scheme of MSPE is shown in Figure 1.…”

Section: Magnetic Solid Phase Extractionmentioning

confidence: 99%

Magnetically responsive materials for solid phase extraction

Fish

2019

EnvEng-IO

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Magnetically responsive materials have found many important applications in analytical chemistry. In this short review the basic information about Magnetic solid phase extraction and Magnetic textile solid phase extraction is given. These analytical techniques enable to preconcentrate target biologically active compounds or pollutants from water samples. Both procedures enable to lower the limit of detection using conventional analytical procedures.

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Review of nanomaterials as sorbents in solid-phase extraction for environmental samples

Cited by 274 publications

References 87 publications

Application of Chemically Exfoliated Boron Nitride Nanosheets Doped with Co to Remove Organic Pollutants Rapidly from Textile Water

Application of Chemically Exfoliated Boron Nitride Nanosheets Doped with Co to Remove Organic Pollutants Rapidly from Textile Water

Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

Magnetically responsive materials for solid phase extraction

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