CuMn2O4/chitosan micro/nanocomposite: Green synthesis, methylene blue removal, and study of kinetic adsorption, adsorption isotherm experiments, mechanism and adsorbent capacity

Kazemi, Malihe Samadi; Sobhani, Azam

doi:10.1016/j.arabjc.2023.104754

Cited by 40 publications

(11 citation statements)

References 57 publications

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“…43 Additionally, diffraction peaks corresponding to spinel Cu 1.5 Mn 1.5 O 4 (JCPDS #70-0260) and CuMn 2 O 4 (JCPDS #00-010-0365) were cleared at 2 θ of 18.6°, 30.5°, and 31.3° compatible with (111), (220), and (002) planes, respectively. 41,44 Moreover, the peaks located at 31.7°, 44.3°, 47.7°, and 59.3° are characteristic of the (103), (008), (107), and (116) planes of hexagonal covellite CuS (JCPDS #00-06-0464). 45 Besides, MnS peaks were detected at 25.6°, 39.1°, 50.1°, and 53.1°, corresponding to (100), (102), (103), and (200) planes (JCPDS#00-40-1289).…”

Section: Resultsmentioning

confidence: 99%

Compositionally variant bimetallic Cu–Mn oxysulfide electrodes with meritorious supercapacitive performance and high energy density

El Sharkawy,

Elbanna,

Khedr

et al. 2023

Energy Adv.

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Section: Resultsmentioning

confidence: 99%

Compositionally variant bimetallic Cu–Mn oxysulfide electrodes with meritorious supercapacitive performance and high energy density

El Sharkawy,

Elbanna,

Khedr

et al. 2023

Energy Adv.

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“…On their basis, through local photochemical modification, it is possible to synthesize porous materials with inhomogeneous functionality 46,47 . Creation of such materials and composites, as well as nanostructures, is relevant for solving problems of environmental remediation, wastewater treatment, production and storage of renewable and clean energy, as well as solving environmental problems 48–52 …”

Section: Discussionmentioning

confidence: 99%

“…46,47 Creation of such materials and composites, as well as nanostructures, is relevant for solving problems of environmental remediation, wastewater treatment, production and storage of renewable and clean energy, as well as solving environmental problems. [48][49][50][51][52] 5 | CONCLUSION Thus, in weakly absorbing photopolymerizing compositions, self-channeling of radiation is implemented not only for solitary laser beams, but also for periodic intensity distributions of incoherent light. Using the projection method, it is possible to create polymer structures in the PPC layer, the thickness of which is greater than the DoF of a conventional optical system.…”

Section: Fixation Of Obtained Refractive Index Gradients Features Of ...mentioning

confidence: 99%

Creation of periodic structures in a thick photopolymerizing layer

Mensov,

Polushtaytsev

2024

J of Applied Polymer Sci

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The possibility of optical creation of polymer structures with a periodic distribution of the refractive index in a layer of a photopolymerizing composition, the thickness of which significantly exceeds the depth of field of the used projection system, is considered. Nonlinear wave processes in such an irreversible photorefractive medium for grating‐forming radiation are considered. Using computer simulation, modes of stable self‐channeling of closely propagating light beams have been found, as a result of which regular extended waveguide tracks can be obtained. The results of experiments on the creation of thick polymer gratings using a conventional incoherent projection system are demonstrated. In a composition based on industrial monomer OCM‐2, gratings with a period of 10 μm and a thickness of more than 1 mm were obtained.

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“…The time of contact during the adsorption process is a key parameter to achieve efficient removal of Cd(II), Ni(II), Mn(II), Pb(II), and Cu(II) by the prepared Mag-T-S-0.2, Mag-T-S-0.4, and Mag-S-T [11,[53][54][55]. A time study was conducted to investigate the adsorption capacity of the Mag-T-S-0.2, Mag-T-S-0.4, and Mag-S-T samples.…”

Section: Influence Of Contact Time On the Uptake Of Cd(ii) Ni(ii) Mn(...mentioning

confidence: 99%

Investigation of adsorptive removal of heavy metals onto magnetic core–double shell nanoparticles: kinetic, isotherm, and thermodynamic study

El-Toni,

Habila,

Sheikh

et al. 2024

Mater. Res. Express

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The most perilous environmental hazards arise from the contamination of water by heavy metal ions, owing to the non-biodegradability of these metals, as well as their rapid dissemination throughout components of the environment via the food chain. Nano-based adsorbents have been used for the adsorption removal of many heavy metal cations, but separating and recycling them represent significant difficulties in processing. Magnetic core–double shell nanoparticles provide an attractive solution for processing issues, since they are stable and can be easily separated and recycled. Moreover, the shell thickness, composition, and porosity can be easily tuned. In this work, two samples consisting of magnetic core@TiO2@mesoSiO2 nanoparticles with two shell thicknesses (Mag-T-S-0.2 and Mag-T-S-0.4), along with a magnetic core@SiO2@TiO2 nanoparticle sample (Mag-S-T), were synthesized and characterized by TEM, XRD, magnetic strength measurement and zeta potential. TEM images show the developed core–double shell structure with double shell ranging from 60 to 73 nm. The XRD results indicate the impact of the outer shell on the diffraction pattern. The zeta potential shows that all samples had a negative charge at pH over 4. The magnetic character was suppressed after the formation of the double-shell coating; however, the magnetic core–double shell nanoparticles still had magnetization and could be separated when an external magnetic field was applied. The heavy metal adsorptive ability of Mag-T-S-0.2, Mag-T-S-0.4, and Mag-S-T samples was explored to investigate the effects of shell type and thickness along with kinetic, isotherm, and thermodynamic study. The investigated heavy metals included Cd(II), Ni(II), Mn(II), Pb(II), and Cu(II). The results indicate that, for Mag-T-S-0.2, the equilibrium state occurred after 15 min contact time, with adsorption capacity of 238, 230, 210.6, 181.8, and 245.8 mg/g for Cd(II), Ni(II), Mn(II), Pb(II), and Cu(II), respectively. For Mag-T-S-0.4, the equilibrium state occurred after 15 min contact time, with adsorption capacity of 241, 237.6, 173.8, 189.6, and 257.2 mg/g, respectively. For

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CuMn2O4/chitosan micro/nanocomposite: Green synthesis, methylene blue removal, and study of kinetic adsorption, adsorption isotherm experiments, mechanism and adsorbent capacity

Cited by 40 publications

References 57 publications

Compositionally variant bimetallic Cu–Mn oxysulfide electrodes with meritorious supercapacitive performance and high energy density

Compositionally variant bimetallic Cu–Mn oxysulfide electrodes with meritorious supercapacitive performance and high energy density

Creation of periodic structures in a thick photopolymerizing layer

Investigation of adsorptive removal of heavy metals onto magnetic core–double shell nanoparticles: kinetic, isotherm, and thermodynamic study

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