Oleaster seed-derived activated carbon/ferrite nanocomposite for Pb2+ removal from wastewater

Mahmoodi, Mahsa; Aslibeiki, B.; Sakha, Mahdieh Abdolalipour; Zarei, Mahmoud

doi:10.1016/j.matchemphys.2023.127536

Cited by 9 publications

(2 citation statements)

References 61 publications

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“…The FeNi/C, CoNi/C, and CoFeNi/C nanocapsules exhibit a of the FCC structure, respectively [30]. The average crystallite size can be estimated by Scherrer's formula [31], the calculated values are 11.77, 9.41, 12.3 and 7.24 nm for FeNi/C, CoNi/C, CoFe/C, and CoFeNi/C nanocapsules, respectively.…”

Section: Resultsmentioning

confidence: 97%

Binary and ternary ferromagnetic alloy/C nanocapsules for improved X-band microwave absorption

Hassan,

Yang,

Kuang

et al. 2024

J. Phys. D: Appl. Phys.

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The dielectric-magnetic matching effect emerges from the presence of dual dielectric relaxation and multiple magnetic resonances. This phenomenon becomes a strategic approach in the quest to enhance microwave absorption (MA) performance by optimizing magnetic components. Herein, binary and ternary ferromagnetic alloy with tunable components embedded in carbon skeleton (core/shell) nanocapsules has been successfully fabricated by one step metal-organic chemical vapor deposition (MOCVD). The core/shell structure design introduces numerous interfaces that amplify dielectric loss stemming from polarization. It is important to emphasize that modifying the composition of magnetic core in these nanocapsules effectively regulates the impedance matching characteristics. As a result, the CoFeNi/C nanocapsules demonstrate an optimal reflection loss (RLmin) of -53.6 dB at a thickness of 2.55 mm, alongside an effective absorption bandwidth (EAB) of 5.92 GHz at a thickness of 2.05 mm, with a filling ratio as low as 20 wt%. This study has provided valuable insights into a promising avenue for fabricating dielectric-magnetic nanocomposites with outstanding microwave attenuation capabilities through the manipulation of composited elements.

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Section: Resultsmentioning

confidence: 97%

Binary and ternary ferromagnetic alloy/C nanocapsules for improved X-band microwave absorption

Hassan,

Yang,

Kuang

et al. 2024

J. Phys. D: Appl. Phys.

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“…S16 (ESI) and Table S4 (ESI†), it can be concluded that the R 2 value of the Temkin isotherm model 52 is between 0.970 and 0.976. The three-parameter models, Sips, 53 Toth, 54 and Redlich–Peterson, 55 can more accurately describe the adsorption equilibrium, with R 2 values of 0.994 to 0.998 for Sips, Toth, and Redlich–Peterson models, respectively. The equations for Sips, Toth, and Redlich–Peterson all contain exponential parameters, which can be regarded as modified forms of Henry's law, Langmuir isotherm, and Freundlich isotherm.…”

Section: Resultsmentioning

confidence: 98%

A 3D hierarchical porous adsorbent constructed by cryo-polymerization for ultrafast uranium harvesting from seawater

Liao

Chen

et al. 2023

J. Mater. Chem. A

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Apple Tree Root‐Derived Biochar/Iron Oxide Triphasic Nanocomposite for Wastewater Treatment and Microwave Absorption

Mahmoodi,

Aslibeiki,

Ghosh

et al. 2024

Advanced Sustainable Systems

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In this work, two major sources of pollution: (1) Water pollution due to heavy metals, and (2) Electromagnetic wave (EMW) pollution, often regarded as the fourth category of pollution (after air, water, and soil pollution) are addressed. A unique bio‐based triphasic nanocomposite (Fe3O4/α‐Fe2O3/carbon) is synthesized and its superior properties are demonstrated to address both types of environmental pollution. The nanocomposite, derived from lightweight apple tree roots, is used for Pb (II) ion removal from aqueous solutions via adsorption and magnetic separation. The biomass‐derived highly porous biochar decorated with iron‐oxide showed adsorption efficiency of nearly 100% and corresponding capacity of 149 mg.g−1 under optimal conditions for initial Pb (II) concentration of 50 mg.L−1. Furthermore, a remarkable adsorption capacity of 731 mg.g−1 is achieved using lower amount of the adsorbent for a slightly lower efficiency (97%). In addition, the mesoporous composite showed excellent EMW absorption efficiency with effective absorption bandwidth of 7.8 GHz and reflection loss of −61.7 dB, arising from very good impedance matching, and high dielectric and magnetic losses. This work establishes the multifunctional properties of the synthesized composite, and addresses the UN Sustainable Development Goal (SDG) 6 (Clean water and sanitation) and SDG 13 (Climate action, including pollution management).

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Oleaster seed-derived activated carbon/ferrite nanocomposite for Pb2+ removal from wastewater

Cited by 9 publications

References 61 publications

Binary and ternary ferromagnetic alloy/C nanocapsules for improved X-band microwave absorption

Binary and ternary ferromagnetic alloy/C nanocapsules for improved X-band microwave absorption

A 3D hierarchical porous adsorbent constructed by cryo-polymerization for ultrafast uranium harvesting from seawater

Apple Tree Root‐Derived Biochar/Iron Oxide Triphasic Nanocomposite for Wastewater Treatment and Microwave Absorption

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