Novel magnetic nanocomposite of calcium alginate carrying poly(pyrimidine-thiophene-amide) as a novel green synthesized polyamide for adsorption study of neodymium, terbium, and dysprosium rare-earth ions

Javadian, Hamedreza; Ruiz, Magda; Taghvai, Mehdi; Sastre, Ana Marı́a

doi:10.1016/j.colsurfa.2020.125252

Cited by 38 publications

(8 citation statements)

References 58 publications

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“…On the one hand, the host–guest electrostatic interaction is stronger due to its lowest zeta potential; on the other hand, the coordination interaction derived from free carboxyl (proved in Section ) contributes to the superior adsorption induced by the relatively rich carboxyl and the high specific surface area. Besides, a capacity of 150.6 mg g –1 was also found to be higher than those of most of the reported adsorbents, including carbon-based and silica-based materials, − ,− as listed in Table . The hierarchical porous ZIF-8 showed a much higher adsorption capacity than UiO-66-(COOH) 2 -B10 .…”

Section: Resultsmentioning

confidence: 83%

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺

Pei

Zhao

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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The adsorption and recovery of dysprosium ions (Dy3+) from industrial wastewater are necessary but still challenging. Herein, we constructed a series of defect-containing metal–organic frameworks (MOFs) [UiO-66-(COOH)2] using sodium benzoate (BCNa) as a modulator. Upon the formation of defects, the porosity and surface charge properties of the MOFs were improved, leading to a higher utilization ratio of active groups and higher adsorption capacities for Dy3+. The synthesized UiO-66-(COOH)2-B10 with an optimal addition of BCNa exhibited a superior adsorption capacity of 150.6 mg g–1. Fast adsorption occurred at ∼5 min, and equilibrium was reached at ∼60 min. Higher pH and temperature were found to be beneficial for boosting Dy3+ adsorption, and selective adsorption over other metal ions was achieved in a multicomponent solution. Further, FTIR spectroscopy and XPS investigations indicate that free carboxyl contributes to the capture of Dy3+. Thus, this work provides a promising strategy to enhance the utilization ratio of active groups and further adsorption performance.

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Section: Resultsmentioning

confidence: 83%

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺

Pei

Zhao

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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“…The maximum biosorption capacities were 72.5 mg g −1 for LEB-18 and 48.2 mg g −1 for LEB-52 at a temperature of 298 K. These values are competitive with other materials used to uptake Nd from aqueous solutions. For example, Javadian et al [ 53 ] compared around 20 adsorbents used to uptake Nd from aqueous matrices. They found capacity values from 27.1 to 126.5 mg g −1 .…”

Section: Resultsmentioning

confidence: 99%

Biosorption of Neodymium (Nd) from Aqueous Solutions Using Spirulina platensis sp. Strains

et al. 2022

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Rare earth elements such as neodymium (Nd) are important elements used mainly in developing new technologies. Although they are found in low concentrations in nature, they can be obtained by extracting solid samples such as phosphogypsum. Among the techniques, adsorption has been used successfully with several adsorbent materials. In this work, two strains of Spirulina platensis (LEB-18 and LEB-52) were employed as biosorbents for efficiently removing the Nd element from the aqueous media. Biosorption tests were carried out in a batch system, and the results of the biosorption kinetics showed that for both materials, the biosorption of Nd was better described by the Avrami model. Moreover, it could be considered that 80 min would be necessary to attain the equilibrium of Nd(III) using both biosorbents. The result of the biosorption isotherms showed that for both strains, the best-fitted model was the Liu model, having a maximum biosorption capacity of 72.5 mg g−1 for LEB-18 and 48.2 mg g−1 for LEB-52 at a temperature of 298 K. Thermodynamics of adsorption showed that for both LEB-18 and LEB-52 the process was favorable (∆G° < 0) and exothermic (∆H° −23.2 for LEB-18 and ∆H° −19.9 for LEB-52). Finally, both strains were suitable to uptake Nd, and the better result of LEB-18 could be attributed to the high amount of P and S groups in this biomass. Based on the results, a mechanism of electrostatic attraction of Nd3+ and phosphate and sulfate groups of both strains of Spirulina platensis was proposed.

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“…Gibbs free energy was found as -7.087 kJ/mol using Flory-Huggins equilibrium constant FH and Gibbs free energy equation (DG=-RTlnKFH). As a result, the RNA adsorption was occurred spontaneously due to the required lower energy for the adsorption process [34]. diffusion restrictions.…”

Section: Adsorption Isotherms and Kinetic Modelsmentioning

confidence: 99%

PolyUracil Membranes for Rapid and Effective RNA Purification

Armutçu¹

2020

Adıyaman University Journal of Science

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Ribonucleic acid (RNA) plays a critically important role in cellular defense, deoxyribonucleic acid (DNA) replication, transcription, and gene expression for living organisms as well as, a lot of diseases such as cancer, immunodeficiency, tumors has been associated with RNA's disruption. For this purpose, supermacropores membranes were designed to purify RNA using nucleotide-based ligand. In this study, polymerizable uracil monomer as uracil methacrylate (UraM) was synthesized, and 2-hydroxyethyl methacrylate (HEMA)-based membranes [poly(HEMA-UraM)] were prepared by bulk polymerization under partially frozen conditions by copolymerization of monomers, UraM, and HEMA. These membranes were characterized via swelling studies, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). To optimize separation conditions, effects of pH, initial RNA concentration, time, and temperature on RNA adsorption capacity were examined. Maximum adsorption of RNA on poly(HEMA-UraM) membrane was found to be 15.52 mg/g for 0.5 mg/mL RNA initial concentration at 25.0°C with an optimum pH of 7.0. After ten repetitive adsorption-desorption cycles, the RNA adsorption capacity decreased only 3.68%.

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Novel magnetic nanocomposite of calcium alginate carrying poly(pyrimidine-thiophene-amide) as a novel green synthesized polyamide for adsorption study of neodymium, terbium, and dysprosium rare-earth ions

Cited by 38 publications

References 58 publications

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺

Biosorption of Neodymium (Nd) from Aqueous Solutions Using Spirulina platensis sp. Strains

PolyUracil Membranes for Rapid and Effective RNA Purification

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Novel magnetic nanocomposite of calcium alginate carrying poly(pyrimidine-thiophene-amide) as a novel green synthesized polyamide for adsorption study of neodymium, terbium, and dysprosium rare-earth ions

Cited by 38 publications

References 58 publications

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy3+

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy3+

Biosorption of Neodymium (Nd) from Aqueous Solutions Using Spirulina platensis sp. Strains

PolyUracil Membranes for Rapid and Effective RNA Purification

Contact Info

Product

Resources

About

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺

Rationally Tailoring Pore and Surface Properties of Metal–Organic Frameworks for Boosting Adsorption of Dy³⁺