Innovative supported bimetallic and trimetallic nanocomposites on the anodized aluminum (Fe-Mn@AAO and Fe-Mn-Cu@AAO) as competent adsorbents for the adsorption of arsenic from aqueous solutions

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-03-25 DOI:10.1016/j.molliq.2025.127461

Hesam Malekzadeh , Mohammad Zabihi , Morteza Faghihi

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Abstract

In the present study, two shaped nanocomposites were synthesized on the anodized aluminum substrates using bimetallic (Fe-Mn) and trimetallic (Fe-Mn-Cu) metal oxides via the hydrothermal method for the adsorption of arsenic ions in the aqueous solutions. The fabricated anodic nanocomposites were thoroughly characterized using XRD, FTIR, FESEM, EDX, XRF and BET analysis to understand their structural, morphological, and compositional properties. The well dispersed nanocomposites with mesoporous structure were identified using BET and FESEM analyses when the highest surface area was measured to be about 16.25 m²/g related to Fe-Mn@AAO sample. The deep study was carried out to evaluate the effect of operating conditions including temperature and pH for the removal of As (V). The adsorption performance was investigated through isotherm models employing Langmuir and Freundlich equations which provided insights into the adsorption mechanisms. The maximum adsorption capacity determined from linear Langmuir model was measured to be 70.92 and 67.56 mg/g for Fe-Mn@AAO and Fe-Mn-Cu@AAO, respectively. Kinetic studies were conducted to determine the adsorption rates and mechanisms which illustrated the best agreement between the pseudo second order kinetic and experimental data with high correlation coefficient (R² > 0.99). The regeneration experiments assessed the reusability of the nanocomposites by seven adsorption cycles which demonstrated promising potential for both nanocomposites in efficient arsenic removal, highlighting their applicability in industrial water treatment technologies without necessity for the conventional shaping such as tableting and granulation. To the best of our knowledge, the presented adsorbents were not used before for adsorption of As (V) from water.

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.