Adsorption of lead ions (Pb2+) from wastewater using effective nanocomposite GO/CMC/FeNPs: Kinetic, isotherm, and desorption studies

Neskoromnaya, E. A.; Хамизов, Р. Х.; Melezhyk, Aleksander V.; Memetova, A. E.; Mkrtchan, Elina S.; Бабкин, А. В.

doi:10.1016/j.colsurfa.2022.130224

Cited by 16 publications

(8 citation statements)

References 102 publications

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“…Nickel ions affect the synthesis of genetic materials, inhibit various enzymatic activities, and cause nervous dysfunction. Therefore, it is very important and necessary to rapidly and cheaply discriminate heavy metal ions in industry, life sciences, and food chemistry. , …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is very important and necessary to rapidly and cheaply discriminate heavy metal ions in industry, life sciences, and food chemistry. 4,5 In recent years, many methods have been developed for identifying heavy metal ions. The classic standard methods for the quantitative detection of metal ions are atomic absorption spectroscopy, inductively coupled plasma atomic emission spectroscopy, and mass spectrometry.…”

Section: ■ Introductionmentioning

confidence: 99%

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Peroxidase-Mimicking DNAzymes as Receptors for Label-Free Discriminating Heavy Metal Ions by Chemiluminescence Sensor Arrays

Yang

Shi

et al. 2023

Anal. Chem.

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Receptors are crucial to the analytical performance of sensor arrays. Different from the previous receptors in sensor arrays, herein, peroxidase-mimicking DNAzymes were innovatively used as receptors to develop a label-free chemiluminescence sensor array for discriminating various heavy metal ions in complex samples. The peroxidase-mimicking DNAzymes are composed of functional oligonucleotides and hemin, including G-triplex-hemin DNAzyme (G3-DNAzyme), G-quadruplex-hemin DNAzyme (G4-DNAzyme), and the dimer of G-quadruplex-hemin DNAzyme (dG4-DNAzyme). Circular dichroism (CD) spectroscopy demonstrated that different metal ions diversely affect the conformation of G-quadruplex and G-triplex, resulting in a change in the activity of peroxidase-mimicking DNAzyme. Thus, the unique fingerprints formed to easily discriminate seven kinds of heavy metal ions by principal component analysis (PCA) within 20 min. The discrimination of unknown metal ions in tap water further confirmed its ability for discriminating multiple heavy metal ions. Moreover, it will not bring water pollution due to the good biocompatibility of DNA. Therefore, it not only merely offers a label-free, rapid, environment-friendly, and cheap (1.49 $) sensor assay for discriminating metal ions but also comes up with an innovative way for developing sensor arrays.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Peroxidase-Mimicking DNAzymes as Receptors for Label-Free Discriminating Heavy Metal Ions by Chemiluminescence Sensor Arrays

Yang

Shi

et al. 2023

Anal. Chem.

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“…From a mathematical point of view, the pseudo-first-order model well describes the kinetic processes limited from beginning to end by film diffusion at the phase boundary. It also describes the final stages (the so-called regular modes) of particle diffusion processes with a good approximation [2]. The pseudo-second-order model explains the chemisorption of heavy metal ions onto adsorbents [61].…”

Section: Batch Sorption Experimentsmentioning

confidence: 99%

“…Pb enters the human body through the food chain and can detrimentally affect the central nervous system, liver, and kidneys [1]. Common methods for Pb removal include chemical precipitation, ion exchange, membrane filtration, adsorption, and electrochemical treatment [2]. Adsorption is the most widely used treatment technology owing to its low cost and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption is the most widely used treatment technology owing to its low cost and high efficiency. Typical adsorbents consist of carboxymethyl cellulose/graphene oxide/Fe nanoparticles [2], modified chitosan hydrogels [3], analcime-activated carbon composites [4], nano-zerovalent iron (nZVI) [5], and amino-carboxyl cellulose [6]. nZVI has been extensively used in the remediation of hazardous groundwater, permeable reactive barriers, and contaminated subsoil [5,7].…”

Section: Introductionmentioning

confidence: 99%

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Cobalt/Iron Bimetallic Biochar Composites for Lead(II) Adsorption: Mechanism and Remediation Performance

Zhao,

Qin,

Liu

et al. 2024

Molecules

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The performance of nano-zero-valent iron for heavy metal remediation can be enhanced via incorporation into bimetallic carbon composites. However, few economical and green approaches are available for preparing bimetallic composite materials. In this study, novel Co/Fe bimetallic biochar composites (BC@Co/Fe-X, where X = 5 or 10 represents the CoCl2 concentration of 0.05 or 0.1 mol L−1) were prepared for the adsorption of Pb2+. The effect of the concentration of cross-linked metal ions on Pb2+ adsorption was investigated, with the composite prepared using 0.05 mol L−1 Co2+ (BC@Co/Fe-5) exhibiting the highest adsorption performance. Various factors, including the adsorption period, Pb2+ concentration, and pH, affected the adsorption of Pb2+ by BC@Co/Fe-5. Further characterisation of BC@Co/Fe-5 before and after Pb2+ adsorption using methods such as X-ray diffraction and X-ray photoelectron spectroscopy suggested that the Pb2+ adsorption mechanism involved (i) Pb2+ reduction to Pb0 by Co/Fe, (ii) Co/Fe corrosion to generate Fe2+ and fix Pb2+ in the form of PbO, and (iii) Pb2+ adsorption by Co/Fe biochar. Notably, BC@Co/Fe-5 exhibited excellent remediation performance in simulated Pb2+-contaminated water and soil with good recyclability.

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Removal of Pb2+ and Cd2+ by adsorption onto Y zeolite and its selectivity of retention in an actual contaminated effluent

et al. 2023

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Adsorption of lead ions (Pb2+) from wastewater using effective nanocomposite GO/CMC/FeNPs: Kinetic, isotherm, and desorption studies

Cited by 16 publications

References 102 publications

Peroxidase-Mimicking DNAzymes as Receptors for Label-Free Discriminating Heavy Metal Ions by Chemiluminescence Sensor Arrays

Peroxidase-Mimicking DNAzymes as Receptors for Label-Free Discriminating Heavy Metal Ions by Chemiluminescence Sensor Arrays

Cobalt/Iron Bimetallic Biochar Composites for Lead(II) Adsorption: Mechanism and Remediation Performance

Removal of Pb2+ and Cd2+ by adsorption onto Y zeolite and its selectivity of retention in an actual contaminated effluent

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