Synthesis and characterization of series of Ca-MCM-41 nanoporous structures for effective elimination of sulfate ions; insight into the used calcium precursor and realistic studies

Microporous and Mesoporous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 113578 - 113578

Published: March 1, 2025

Language: Английский

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Methyl alginate/Santa Barbara amorphous-15/iron oxide nanocomposite for efficient removal of different pollutants from aquatic environments

Carbohydrate Polymer Technologies and Applications, Journal Year: 2024, Volume and Issue: 8, P. 100562 - 100562

Published: Aug. 31, 2024

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Characterization and Statistical Physics Modeling of Two Coal Hybridized Nanostructures with Two Forms of Polyaniline (Nanofibers Hydrogel and Nanorods) as Adsorbents for Toxic 4-Chlorophenol

Journal of Inorganic and Organometallic Polymers and Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Language: Английский

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Tailoring the synergistic effect of integrated polypyrrole hydrogel on the adsorption activity of rice husk-based activated carbon (polypyrrole/activated carbon composite) for bisphenol-A and 4-chlorophenol: experimental and theoretical analysis

Frontiers in Bioengineering and Biotechnology, Journal Year: 2025, Volume and Issue: 13

Published: March 21, 2025

Rice husk-derived activated carbon was hybridized with polypyrrole hydrogel (Pyh), producing advanced nanocomposite (Pyh/AC). The composite applied as an enhanced adsorbent for two forms of toxic phenolic compounds, particularly bisphenol-A (BSP-A) and 4-chlorophenol (4-CL). adsorption studies were evaluated considering the synthetic effect Pyh based on criteria statistical physics equilibrium modeling. reported saturation capacities BSP-A 4-CL using Pyh/AC are 321.4 mg/g 365.8 mg/g, respectively. These values significantly higher than estimated in separated form. analysis steric properties validated about 169.7 119.5 active site density during uptake 4-CL, densities (110.5 99.3 (4-CL)), demonstrating positive impact hybridization process terms surface area, porosity, incorporated chemical functional groups. Furthermore, capacity each structure to accommodate up 3 molecules 6 displays operation multi-molecular mechanisms ordering these adsorbed vertically non-parallel forms. energies, either classic (<21 kJ/mol) or (<20 isotherm studies, reflect physisorption compounds Pyh/AC. also shows thermodynamically stable reactions that occurred exothermic, favorable, spontaneous properties.

Language: Английский

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Facile exfoliation of natural talc into separated mesoporous magnesium silicate nano-sheets for effective sequestration of phosphate and nitrate ions: characterization and advanced modeling

Frontiers in Chemistry, Journal Year: 2025, Volume and Issue: 13

Published: April 15, 2025

Magnesium silicate nano-sheets were synthesized from natural talc by facile exfoliation and delamination methods as exfoliated product (EXTC) of 29.5 nm average pore diamter, enhanced surface area (103 m 2 /g), adsorption perforamnces. The sucessful development EXTC particles was followed based on different techniques applied in effective sequestration PO 4 3- NO 3 − ions water. adsorbent demonstrates remarkable effectiveness for both (257.9 mg/g) (164.2 compared to several studied structures. Depending the steric analysis Monolayer equilibrium model, interface highly saturated with interactive receptors but higher abundant (151.5 (61.5 mg/g). This resulted aggregation effect during uptake (4 per site) than (3 which also donate vertical orientation these adsorbed operation multi-ionic mechanisms. structure is recyclable significant safety cane be its spent or exhausted state fertilizer. energetic evaluation considering Gaussian energy (<8.5 kJ/mol) well (<4 kJ/mol), suggested predominant impact physical mechanisms (hydrogen bonds electrostatic attraction), addition weak chemical complexation. Furthermore, thermodynamic functions declare retention into framework exothermic spontaneous reactions.

Language: Английский

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Effective and realistic sequestration of Sr2+ and B3+ ions from the aqueous environments using coral reefs based Ca-MCM-41: Gulf of Suez as case study

Frontiers in Chemistry, Journal Year: 2025, Volume and Issue: 13

Published: April 16, 2025

A mesoporous calcium-bearing siliceous framework (Ca-MCM-41) was synthesized using natural coral reef carbonate rocks as precursors. The structural characterization, confirmed through XRD, SEM, FT-IR, and BET analyses, validated the formation of MCM-41 with well-defined properties a high surface area 159.6 m 2 /g. developed Ca-MCM-41 evaluated potential adsorbent for removal Sr 2+ B 3+ ions from both aqueous solutions real seawater samples collected Gulf Suez, Egypt. adsorption capacity at saturation reached 285.9 mg/g 86.1 , demonstrating framework’s affinity these contaminants. mechanisms were elucidated steric energetic parameters, derived statistical physics-based isotherm models. exhibited higher active site density (148.9 mg/g) compared to (54.8 mg/g), explaining its superior sequestration performance strontium ions. Each receptor capable accommodating up three ions, indicating multi-ionic interaction process preferential vertical alignment during adsorption. Energetic analysis revealed that occurred via physical energies below 7 kJ/mol, alongside exothermic spontaneous behavior, evidenced by calculated internal energy, entropy, enthalpy values. structure demonstrated notable efficiency in applications, achieving percentages 80% 64% considering their average concentrations (24.2 mg/L 12.85 ) 1-L volume. These findings highlight an effective sustainable environmental water treatment applications.

Language: Английский

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Enhanced remediation of U(vi) ions from water resources using advanced forms of morphologically modified glauconite (nano-sheets and nano-rods): experimental and theoretical investigations

RSC Advances, Journal Year: 2024, Volume and Issue: 14(38), P. 28017 - 28034

Published: Jan. 1, 2024

Two forms of morphologically transformed glauconite (GL) involved exfoliated nanosheets (EXG) and nanorods (GRs), which were synthesized by facile exfoliating scrolling modification under sonication.

Language: Английский

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Synergetic studies on the nitrogen functionalization and polyaniline hybridization on the uptake performances of acephate pesticides by raw coal: Steric and energetic studies

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 702, P. 135113 - 135113

Published: Aug. 15, 2024

Language: Английский

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Effective Remediation of Toxic Metal Ions (Cd(II), Pb(II), Hg(II), and Ba(II)) Using Mesoporous Glauconite-Based Iron Silicate Nanorods: Experimental and Theoretical Studies

Microporous and Mesoporous Materials, Journal Year: 2024, Volume and Issue: unknown, P. 113390 - 113390

Published: Oct. 1, 2024

Language: Английский

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Synergetic studies on the influence of the integrated cellulose on the adsorption of selenite and selenite by cellulose/phillipsite composite: Steric and energetic assessments

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 169, P. 113038 - 113038

Published: Aug. 25, 2024

Language: Английский

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