Chemically Surface-Engineered Mesoporous Silica for the Toxic Metal Ions Uptake: Insights from Experiment and Density Functional Calculations

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Robust chemical modification of mesoporous silica was conducted using 3-mercaptopropyltriethoxysilane via a surface-engineered postgrafting KIT-6 with acidic propylsulfonate groups to obtain KIT-6-SO3H. A fabricated meso-KIT-6-SO3H-modified quartz crystal microbalance sensor KIT-6-SO3H layers coating on QCM electrode is utilized detect Pb2+, Cd2+, and Cs+ ions high sensing affinity. The functionalized KIT-SO3H exhibits adsorption capacities (Qe) 123.5 mg g-1, 117.5 90.6 g-1 for Cs+, respectively, as determined by UV-vis measurements. These values coincide well those obtained from the ICP-OES remarkable ability adsorb metal achieved synergistic cooperation large pore volume, surface area, abundant -SO3H within structure comprehensive study carried out investigate influence pH uptake ions. Kinetic isotherm studies demonstrate that adsorptive removal follows second-order kinetic model described Langmuir isotherm, reflecting monolayer behavior. Density functional calculations reveal these metals highly exothermic thermodynamic perspective, which aligns supports experimental findings. All were exothermically adsorbed binding energies -1.790 eV -0.181 -3.113 confirming exergonic investigated

Language: Английский

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Carbon nanotube-assisted self-assembly of monolithic CO2 adsorbent: Evaluating the optimum pellet diameter for enhanced mass transfer

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162718 - 162718

Published: April 1, 2025

Language: Английский

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Strong, Flame Retardant and Thermally Insulating Polybenzoxazine-Silica Aerogels Fabricated Via Chemical Liquid Deposition Using Eco-Friendly Water-Ethanol Solvent

Published: Jan. 1, 2025

Language: Английский

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The Role of Nanoporous Adsorbents in the Circular Economy—Closing the Loop of Critical Materials Recovery

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 5, 2024

Abstract Due to the increase in global population, industrialization, and transition climate neutrality through low‐emission technologies, pressure on critical materials (CMs) continues grow. CMs are defined as with a significant risk of supply chain disruption limited substitutability. In this context, rare‐earth elements, platinum group metals, lithium, cobalt particularly crucial for shift carbon‐free economy sustainability. One important strategies endorse goal carbon reduction is promote recycling resources. As solution, effective recovery have been developed, such solid‐phase separation technologies based advanced functional sorbents. This perspective article aims provide general assessment role porous closing loop recycling. Here, comprehensive insights provided into recent development, design, application adsorbents commonly applied extraction systems. Their current research status problems related their future also highlighted. review covers advances hierarchical silica‐based materials, aerogels, covalent organic frameworks, metal–organic carbon‐based adsorbents.

Language: Английский

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Antibiotic adsorption from aqueous media by using silica aerogels derived from amine-bridged silsesquioxane networks

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 68, P. 106538 - 106538

Published: Nov. 15, 2024

Language: Английский

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Strong, Tough, and Recyclable Aramid Aerogel Fibers with Homogeneous Nanoscale Structures for High-Temperature Thermal Insulation Applications

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(14), P. 16108 - 16118

Published: July 8, 2024

Language: Английский

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Fixation behavior of oceanic manganese nodule-sodium alginate composite microspheres for heavy metal release during manganese nodule mining

Environmental Pollution, Journal Year: 2024, Volume and Issue: 363, P. 125120 - 125120

Published: Oct. 15, 2024

Language: Английский

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Enhanced phosphate removal by La(OH)3 embedded sodium alginate aerogel composites: Batch and column studies

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 69, P. 106540 - 106540

Published: Nov. 25, 2024

Language: Английский

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Electricity Harvesting from Water Evaporation on Hierarchical Pore Gradient Silica Aerogel-Based Generators

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(32), P. 42468 - 42475

Published: July 30, 2024

In this study, the electric energy harvesting capability of hierarchical pore gradient silica aerogel (HPSA) is demonstrated due to its unique porous structure and inherent hydroxyl groups on surface. Taking advantage positively charged surface unwashed HPSA credited by preparation strategy, poly(4-styrene sulfonic acid) (PSS) can be spontaneously adsorbed onto shows distribution pore-gradient HPSA. By virtue stronger ionization PSS, PSS-modified (PSS–HPSA) enhanced electricity generation performance from natural water evaporation with an average output voltage 0.77 V individual device. The evaporation-induced property PSS–HPSA maintained in presence a low concentration salt. desirable salt resistance benefits 3D which ensures rapid replenishment so as effectively avoid accumulation. HPSA-based devices advantages structure, easy functionalization, good physicochemical stability, capability, eco-friendliness show great potential generators.

Language: Английский

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Statistical modeling and optimization of heavy metals (Pb and Cd) adsorption from aqueous solution by synthesis of Fe3O4/SiO2/PAM: isotherm, kinetics, and thermodynamic

Polymer Bulletin, Journal Year: 2024, Volume and Issue: 81(16), P. 14513 - 14545

Published: July 4, 2024

Abstract In this study, magnetic material was synthesized using iron salts, then silicon-specific used to gain porosity, straight-chain polyacrylamide (PAM) modified give the surface functional properties, and final product Fe 3 O 4 /SiO 2 /PAM nanocomposite material. Heavy metal (Pb Cd) removal studies were carried out with composite material, considering central design response methodology (CCD-RSM) optimization model. The effects of various parameters, for example, initial concentration, pH, adsorbent dose, temperature contact time, investigated as a part study. To optimize these CCD-RSM model applied experiments. Analysis variance (ANOVA) evaluate statistical parameters investigate interactions variables. designed experimental set, amount (30 mg), pH 7.0 value, (40 °C), concentration Pb (80 mg/L) Cd (20 90 min time determined optimum conditions. high coefficient determination both metals showed good agreement between results predicted values ( R 0.99; 0.95). TEM, SEM, XRD, FTIR, BET Zeta potential analyses performed characterize structure morphology adsorbent. 2+ heavy studies, maximum adsorption capacities 66.54 13.22 mg/g, respectively. Additionally, isotherms, kinetics thermodynamic modeling conducted. Features such large area capacity nanoparticles observed. demonstrated its an effective ions present in simulated wastewater samples. particular, we can say that has strong selectivity, well affinity Pb(II) ions.

Language: Английский

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