Extraction of Palladium(II) with a Magnetic Sorbent Based on Polyvinyl Alcohol Gel, Metallic Iron, and an Environmentally Friendly Polydentate Phosphazene-Containing Extractant

Yudaev, Pavel; Butorova, I.A.; Степанов, Г. В.; Chistyakov, Evgeniy M.

doi:10.3390/gels8080492

Cited by 15 publications

(14 citation statements)

References 37 publications

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“…Yudaev et al [ 92 ] developed a highly efficient and environmentally friendly method for extracting palladium from hydrochloric acid media. The extractant was synthesized through the Pudovik reaction involving hexakis-[4-{(N-allylimino)methyl}-phenoxy]-cyclotriphosphazene (APP) and diethyl phosphite in dioxane, as illustrated in Scheme 11 .…”

Section: Functional Organic Groups In the Phosphazene Ring: Propertie...mentioning

confidence: 99%

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Dagdag,

Kim

2023

Polymers

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This review article provides a comprehensive overview of recent advancements in the realm of cyclophosphazenes, encompassing their preparation methodologies, distinctive properties, and diverse applications. The synthesis approaches are explored, highlighting advancements in the preparation of these cyclic compounds. The discussion extends to the distinctive properties exhibited by cyclophosphazenes, including thermal stability characteristics, and other relevant features. Furthermore, we examine the broad spectrum of applications for cyclophosphazenes in various fields, such as coatings, adhesives, composites, extractants, metal complexes, organometallic chemistry, medicine, and inorganic chemistry. This review aims to offer insights into the evolving landscape of cyclophosphazenes and their ever-expanding roles in contemporary scientific and technological arenas. Future possibilities are emphasized, and significant research data shortages are identified.

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Section: Functional Organic Groups In the Phosphazene Ring: Propertie...mentioning

confidence: 99%

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Dagdag,

Kim

2023

Polymers

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“…Furthermore, this method facilitates the potential reuse of dyes [7]. The development of new adsorbents has always been a prominent issue in the field of adsorption separation [8][9][10]. Currently, a large proportion of the literature has reported the adsorption removal of MO from aqueous solutions [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption of Methyl Orange from Aqueous Phase Using Chitosan–Palmer Amaranth Biochar Composite Microspheres

Chen,

Yin,

Zhang

et al. 2024

Molecules

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To develop valuable applications for the invasive weed Palmer amaranth, we utilized it as a novel biochar source and explored its potential for methyl orange adsorption through the synthesis of chitosan-encapsulated Palmer amaranth biochar composite microspheres. Firstly, the prepared microspheres were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy and were demonstrated to have a surface area of 19.6 m2/g, a total pore volume of 0.0664 cm3/g and an average pore diameter of 10.6 nm. Then, the influences of pH, dosage and salt type and concentration on the adsorption efficiency were systematically investigated alongside the adsorption kinetics, isotherms, and thermodynamics. The results reveal that the highest adsorption capacity of methyl orange was obtained at pH 4.0. The adsorption process was well fitted by a pseudo-second-order kinetic model and the Langmuir isotherm model, and was spontaneous and endothermic. Through the Langmuir model, the maximal adsorption capacities of methyl orange were calculated as 495.0, 537.1 and 554.3 mg/g at 25.0, 35.0 and 45.0 °C, respectively. Subsequently, the adsorption mechanisms were elucidated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy investigations. It is indicated that electrostatic interactions, hydrogen bonding, π–π interactions and hydrophobic interactions between methyl orange and the composite microspheres were pivotal for the adsorption process. Finally, the regeneration studies demonstrated that after five adsorption–desorption cycles, the microspheres still maintained 93.6% of their initial adsorption capacity for methyl orange. This work not only presents a promising method for mitigating methyl orange pollution but also offers a sustainable approach to managing Palmer amaranth invasion.

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“…Spinel ferrites nanomaterials with the general chemical formula of MFe 2 O 4 , where M = Mn, Co, Ni, Zn or other transition metals, can display superparamagnetic properties below a certain nanoparticle size range. Due to this magnetic behaviour and their phase structure stability, such functional nanoparticles have been exploited for several potential biomedical applications, such as contrast agents for magnetic resonant imaging, drug delivery systems and magnetic hyperthermia agents, but also as a promising material for the solid-phase extraction of noble metals from leaching solutions of waste electrical and electronic equipment [10]. Additionally, the diversity of the synthesis techniques and parameters makes ferrites popular materials [11,12].…”

Section: Introductionmentioning

confidence: 99%

Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films

Góes,

Figueiró,

Sabóia

et al. 2024

Magnetochemistry

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This study explores the synthesis and characterization of chitosan/gelatine films incorporating nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4) nanoparticles. The magnetic nanoparticles exhibit superparamagnetic behaviour, making them attractive for various applications, including biomedical uses. The X-ray diffraction analysis confirmed the successful synthesis of NiFe2O4 and CoFe2O4 nanoparticles, and the scanning electron micrographs illustrated well-dispersed ferrite nanoparticles within the biopolymer network, despite the formation of some aggregates attributed to magnetic interactions. Magnetization loops revealed lower saturation magnetization values for the composites, attributed to the chitosan/gelatine coating and the dielectric studies, indicating increased dielectric losses in the presence of ferrites, particularly pronounced in the case of NiFe2O4, suggesting interactions at the interface region between the polymer and ferrite particles. The AC conductivity shows almost linear frequency dependence, associated with proton polarization and conduction processes, more significant at higher temperatures for samples with ferrite particles.

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Extraction of Palladium(II) with a Magnetic Sorbent Based on Polyvinyl Alcohol Gel, Metallic Iron, and an Environmentally Friendly Polydentate Phosphazene-Containing Extractant

Cited by 15 publications

References 37 publications

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Progress in the Field of Cyclophosphazenes: Preparation, Properties, and Applications

Enhanced Adsorption of Methyl Orange from Aqueous Phase Using Chitosan–Palmer Amaranth Biochar Composite Microspheres

Exploring Dielectric and Magnetic Properties of Ni and Co Ferrites through Biopolymer Composite Films

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