Agmatine ligand functionalized magnetic alginate beads for removal of U(VI) ions from solution

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2024, Номер 333(8), С. 4197 - 4210

Опубликована: Май 21, 2024

Abstract In the presented work, magnetic alginate (MA) beads were prepared and activated with epichlorohydrin then functionalized agmatine ligands (MA-A). The materials analyzed by FTIR, SEM, XRD, BET methods. adsorption capacity of MA-A for U(VI) was 451.4 mg/g. Langmuir isotherm model well described experimental data ions. second-order kinetic proposed that ions preferred chemisorption mechanism. enthalpy 35.4 kJ/mol. After seven cycles use, not significantly changed Finally, functionalization MA ligand can be a good candidate applications environmental technologies to remove metal

Язык: Английский

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Preparation and Application of Nanostructured ZnO in Radiation Detection

Materials, Год журнала: 2024, Номер 17(14), С. 3549 - 3549

Опубликована: Июль 18, 2024

In order to adapt the rapid development of high-speed imaging technology in recent years, it is very important develop scintillators with an ultrafast time response. Because its radiation-induced decay time, ZnO has become material for radiation detection and dosimetry. According different sources application scenarios, used various detectors structures, including nanoarrays nanocomposites. this paper, synthesis methods research status nanostructured ZnO-based materials their applications high-energy rays (X-rays, γ-rays) particles (α, β neutron) are reviewed. The performance discussion mainly includes spatial resolution, efficiency.

Язык: Английский

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Boron Removal in Aqueous Solutions Using Adsorption with Sugarcane Bagasse Biochar and Ammonia Nanobubbles

Materials, Год журнала: 2024, Номер 17(19), С. 4895 - 4895

Опубликована: Окт. 6, 2024

Boron is a naturally occurring trace chemical element. High concentrations of boron in nature can adversely affect biological systems and cause severe pollution to the ecological environment. We examined method effectively remove ions from water using sugarcane bagasse biochar agricultural waste with NH3 nanobubbles (10% 90% N2). studied effects solution concentration, pH, adsorption time on by modified biochar. At same time, possibility magnesium chloride enhance capacity was explored. The carbonization temperature investigated thermogravimetric analysis. It characterized XRD, SEM, BET results showed that, under alkaline conditions above pH 9, positively charged improved double-layer effect nanobubbles, because existed form negatively borate B(OH)4− anion groups. Moreover, cations nanobubble could adsorb boron. When coagulate each other, removed significant extent. Extended DLVO theory adopted model interaction between 36 mg/g at room according Langmuir isotherm. adsorbed FT-IR XPS ammonia be zeolite molecular sieves heating. an aqueous via MgCl2 addition.

Язык: Английский

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Application of Textile Composite Materials as a Sorbent for Cleaning Up Oil Spills

Materials, Год журнала: 2025, Номер 18(5), С. 1146 - 1146

Опубликована: Март 4, 2025

This article compares two new textile materials used to clean up spills of oil or products (crude oil, diesel fuel, and base SN 150). The plain-woven cotton fabric is hydrophilic, with a typical porous structure. After coating layer chitosan modified benzaldehyde cross-linked glutaraldehyde (CB), its hydrophobicity increases, hence the sorption affinity hydrophobic hydrocarbons. Including in situ synthesized zinc oxide particles (CBZ) changes structure increases capacity. morphology layers was assessed using scanning electron microscopy (SEM) by comparing contact angles pollutants against composite materials. EDX analysis mapping for Zn element show that homogeneously distributed on surface. roughness enhancement mesoporous under influence were established Brunauer Emmett Teller (BET) method atomic force (AFM). advantages composites are their flexibility, stability, ability float water wipe spills. It found can be successfully regenerated repeatedly, making them highly effective because sorbed crude petroleum separated utilized.

Язык: Английский

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A novel synthesis of ZIF-9-Mel/GO/SA aerogel nanocomposite and its highly efficient removal of U(VI) from aqueous solution

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114261 - 114261

Опубликована: Март 1, 2025

Язык: Английский

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Preparation of fibrous polymer grafted magnetic chitosan beads and modified with hydrazone and imidazole groups: isolation of U(VI) ions from seawater

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 29, 2025

Abstract The magnetic chitosan beads were prepared and grafted with glycidylmethacrylate, then diaminomelanonitrile (DAMN) was attached. nitrile groups of DAMN reacted hydrazine hydrate hydrochloride hydrate-ethylene diamine to obtain (HYD) imidazole (IMDZ) groups, respectively. Both adsorbents removed uranyl ions from the aqueous medium seawater. adsorption capacities Fe₃O₄@CHT@p(GMA)-HYD Fe₃O₄@CHT@p(GMA)-IMDZ, 328.4 434.7 mg/g, have high performance for adsorbing U(VI) synthesized used isolate seawater in presence various ions.

Язык: Английский

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Synthesis and Characterization of Zinc/Aluminium Layered Double Hydroxide: Evaluating Their Potential for Environmental Remediation

Journal of Physics Conference Series, Год журнала: 2025, Номер 3003(1), С. 012010 - 012010

Опубликована: Апрель 1, 2025

Abstract In this study, zinc/aluminum layered double hydroxides, Zn/Al LDH were synthesized at varying molar ratios to evaluate their potential for environmental remediation. The synthesis was carried out using a co-precipitation method, producing with of 1:1, 1:2, 2:1, 1:3, and 3:1. Comprehensive characterization techniques, XRD, FTIR BET surface area analysis. greater disparity in ionic radii between Zn 2+ Al 3+ is responsible the deformation hydroxide layer networks crystal, as evidenced by improvement crystallinity samples ratio reduced. spectra confirmed presence characteristic functional groups, including hydroxyl carbonate groups. analysis highlighted significant differences pore size distribution correlated ratios.

Язык: Английский

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Acid-Etched g-C3N4 for efficient photocatalytic U(VI) reduction and environmental remediation

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 17, 2025

Язык: Английский

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Magnetic Layered Double Hydroxide Nanocomposites: Synthesis, Catalytic Performances, Environmental and Biological Applications

Energy & environment materials, Год журнала: 2025, Номер unknown

Опубликована: Май 28, 2025

In the present review, we addressed synthesis and applications of magnetic layered double hydroxide nanocomposites in different scientific areas including catalysis, environmental remediation, biological functions. First, appraised varied approaches for hydroxides (LDHs), containing co‐precipitation, hydrothermal, sol–gel, ion‐exchange, urea hydrolysis, reconstruction methods. Afterward, concentrated on utility LDH‐based composites evaluated their catalytic effectiveness 4‐nitrophenol reduction, coupling reactions, preparation polycyclic aromatic compounds, oxidation reactions. Next, applicability LDHs was assessed removal water pollutants dyes. Ultimately, discussed efficiency LDH like drug delivery. Investigating obtained results reviewed reports demonstrated auspicious performance these compounds all above‐mentioned fields. Overall, manifested a satisfactory outlook various due to stability, remarkable flexibility, relatively proper surface area, appropriate adsorption capacity, as well propitious retrievability reusability character.

Язык: Английский

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Self-assembled fabrication of robust and durable graphene-based composite aerogel for selective uranium capture

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2024, Номер 333(10), С. 5057 - 5074

Опубликована: Авг. 8, 2024

Язык: Английский

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