Magnetic properties of Cu0.5Mg0.5Fe2O4 nanoparticles synthesized with waste ferrous sulfate

Wang, Wei; Shu, Yirui; Xiang, Hengli; Xu, Dehua; Zhang, Pan; Ren, Genkuan; Zhong, Yanjun; Yang, Xiushan

doi:10.1016/j.mtcomm.2020.101516

Cited by 8 publications

(5 citation statements)

References 44 publications

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“…The Sn 3d spectrum of SF‐0.20 (Figure 4(c)) shows peaks at 495.2 eV (Sn 3d 3/2 ) and 486.8 eV (Sn 3d 5/2 ) and the S 2p spectrum of SF‐0.20 (Figure 4(d)) shows peaks at 162.8 eV (S 2p 1/2 ) and 161.7 eV (S 2p 3/2 ). The Fe 2p spectrum of SF‐0.20 (Figure 4(e)) shows peaks at 724.0 eV (Fe 2p 1/2 ) and 711.3 eV (Fe 2p 3/2 ) attributed to the presence of Fe 3+ [53,54] . The peak observed at 717.8 eV in the Fe 2p spectrum corresponds to the satellite peak of Fe 3+ [53] .…”

Section: Resultsmentioning

confidence: 97%

“…[41,52] The peaks observed at 163.2 eV (S 2p 1/2 ) and 161.8 eV (S 2p 3/2 ) in the S 2p spectrum of pure SnS 2 nanoparticles (Figure 4(b)) indicate the presence of S 2À . [41] The Sn 3d spectrum of SF-0.20 (Figure 4 [53,54] The peak observed at 717.8 eV in the Fe 2p spectrum corresponds to the satellite peak of Fe 3 + . [53] In the iron doped SnS 2 nanoparticles, tin which is more electronegative is substituted by iron which is less electronegative.…”

Section: Mechanism Of Formation Of Sn 1-x Fe X S 2 Nanoparticlesmentioning

confidence: 99%

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Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Lather

Jeevanandam

2022

ChemNanoMat

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Iron‐doped SnS2 nanoparticles (Sn1‐xFexS2) have been synthesized by a novel thermal decomposition method. Phase analysis was done using powder XRD. FE‐SEM and TEM studies show flake‐like morphology for iron doped SnS2 nanoparticles. Diffuse reflectance spectroscopy results demonstrate blue shift of band gap of Sn1‐xFexS2 nanoparticles with respect to pure SnS2 nanoparticles. M−H measurements of iron doped SnS2 nanoparticles at 300 K and 2 K show weak ferromagnetic behaviour when x=0.10 and 0.15. When x=0.20, paramagnetic behaviour at 300 K and superparamagnetic behaviour at 2 K are observed. ZFC‐FC measurements were also carried out for the iron doped SnS2 nanoparticles. The Sn1‐xFexS2 nanoparticles were used as catalyst for peroxidase‐like activity and for the detection of H2O2.

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Section: Resultsmentioning

confidence: 97%

Section: Mechanism Of Formation Of Sn 1-x Fe X S 2 Nanoparticlesmentioning

confidence: 99%

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Lather

Jeevanandam

2022

ChemNanoMat

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“…Additionally, the coercivity and remanence are measured to be 0.03 and 0.07 kOe, as well as 3.43 and 1.73 emu/g, respectively. When compared to CMF, [ 31 ] the saturation magnetization of the composite decreases slightly after doping CNTs because of their non‐magnetic properties. The decrease in coercivity and remanence suggests that the sample responds rapidly to the applied magnetic field, making it easily magnetizable and demagnetizable, thus minimizing magnetic losses.…”

Section: Methodsmentioning

confidence: 99%

Enhanced catalytic oxidation via nano Cu_0.5Mg_0.5Fe₂O₄ embedded in CNTs for adsorption–reduction of hexavalent chromium

Zhang,

Wu,

Wang

et al. 2023

Can J Chem Eng

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A catalyst consisting of Cu0.5Mg0.5Fe2O4 (CMF) supported on carbon nanotubes (CNTs) which exhibits great potential as an adsorbent for treating Cr(VI)‐contaminated wastewater has been successfully prepared. The ferrite possesses excellent magnetic properties, while CNTs have the advantage of a large surface area. This composite material not only prevents the aggregation of magnetic materials and enhances the exposure of active sites but also effectively solves the recycling problem of CNTs. Our results show that the adsorption capacity of Cu0.5Mg0.5Fe2O4–carbon nanotubes (CMF‐CNTs) for Cr(VI) wastewater (45.60 mg/g) is 1.49 times higher than that of Cu0.5Mg0.5Fe2O4 (30.48 mg/g). Compared to a single catalyst, CMF‐CNTs not only improve the dispersibility of magnetic materials but also exhibit synergistic effects between the composite materials, enhancing the chemical adsorption capacity. After five consecutive adsorption and desorption experiments, the adsorption capacity of CMF‐CNTs remains at 88% of its initial value. Furthermore, the study of the catalyst before and after adsorption by XPS reveals that the valence state transition of Fe3+/Fe2+ and Cu2+/Cu+ plays a crucial role in the adsorption process. The results of this study demonstrate the potential of using waste materials for effective wastewater treatment and provide insights into the development of new adsorbents for pollutant removal.

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“…Particularly, inorganic passivators, often applied in large quantities (around 5%), can adversely impact soil physicochemical properties and bacterial metabolism, posing further environmental sensitivity concerns [20,21]. Moreover, passivator residues represent a wastage of resources [22]. Current research primarily focuses on the efficacy of passivators in enriching heavy metals in soil while neglecting their recycling and reuse.…”

Section: Introductionmentioning

confidence: 99%

Developed Recyclable CaFe-Layered Double Hydroxide for Efficient Cadmium Immobilization in Soil: Performance and Bioavailability

Jing,

Chen,

Zhang

et al. 2024

Minerals

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Powdered layered double hydroxide (CaFe-LDH) was synthesized via hydrothermal co-precipitation, demonstrating successful preparation upon characterization. Subsequently, experiments were conducted to assess its efficacy in immobilizing divalent cadmium (Cd(II)). The findings substantiated the effectiveness of CaFe-LDH in immobilizing Cd(II) within soil. Various influencing factors, including LDH dosage, pH, and soil heavy metal concentration, were systematically investigated, revealing CaFe-LDH’s superiority in Cd(II) immobilization. Notably, the leaching concentration of Cd(II) was notably reduced from 142.30 mg/L to 32.99 mg/L, with a maximum adsorption capacity of 31.10 mg/L, underscoring the significant role of CaFe-LDH in Cd(II) removal. Furthermore, the stability of CaFe-LDH was confirmed via toxicity characteristic leaching procedure (TCLP) experiments and plant potting tests. In-depth analysis of the immobilization mechanism through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM) elucidated isomorphous substitution and surface adsorption as the primary mechanisms responsible for Cd(II) immobilization in contaminated soils. Additionally, isomorphic substitution and adsorption onto oxygen-containing functional groups were observed. This comprehensive study underscores the promising potential of CaFe-LDH in immobilizing Cd(II) in contaminated soil. With its commendable immobilization properties and recyclability, CaFe-LDH emerges as a promising solution for remediating heavy-metal-contaminated soils.

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Magnetic properties of Cu0.5Mg0.5Fe2O4 nanoparticles synthesized with waste ferrous sulfate

Cited by 8 publications

References 44 publications

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Enhanced catalytic oxidation via nano Cu_0.5Mg_0.5Fe₂O₄ embedded in CNTs for adsorption–reduction of hexavalent chromium

Developed Recyclable CaFe-Layered Double Hydroxide for Efficient Cadmium Immobilization in Soil: Performance and Bioavailability

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Magnetic properties of Cu0.5Mg0.5Fe2O4 nanoparticles synthesized with waste ferrous sulfate

Cited by 8 publications

References 44 publications

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS2 Nanoparticles and Studies on their Peroxidase‐like Activity

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS2 Nanoparticles and Studies on their Peroxidase‐like Activity

Enhanced catalytic oxidation via nano Cu0.5Mg0.5Fe2O4 embedded in CNTs for adsorption–reduction of hexavalent chromium

Developed Recyclable CaFe-Layered Double Hydroxide for Efficient Cadmium Immobilization in Soil: Performance and Bioavailability

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Product

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Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS₂ Nanoparticles and Studies on their Peroxidase‐like Activity

Enhanced catalytic oxidation via nano Cu_0.5Mg_0.5Fe₂O₄ embedded in CNTs for adsorption–reduction of hexavalent chromium