Effects of ultrasonic irradiation on the synthesis, crystallization, thermal and dissolution behaviour of chloride-intercalated, co-precipitated CaFe-layered double hydroxide

Szabados, Márton; Ádám, Adél Anna; Carlson, Stefan; Sipos, Pál; Pálinkó, István

doi:10.1016/j.ultsonch.2019.02.024

Cited by 16 publications

(3 citation statements)

References 64 publications

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“…Ultrasonic irradiation was found to be able to regulate the crystallization process of CaFe-LDH with chloride interlayer anions [62]. Low-performance ultrasonic irradiation provided with perfect conditions for the formation of LDH with well-developed hexagonally-shaped crystallites.…”

Section: Ultrasonically-enhanced Mechanochemical Methodsmentioning

confidence: 98%

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

Sipos¹,

Pálinkó²

2019

Studia UBB Chemia

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This review article describes the major structural features of layer double hydroxides (LDHs), gives an overview of their synthetic and modification methods as well as the structural characterization possibilities both the generally used and those, which can only be used for specific LDHs. The catalytic use of these materials without calcination, i.e. the layered structure is preserved, are also highlighted. The paper places the authors' works of about the last decade in the framework of recent papers and review articles of this broad field.

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Section: Ultrasonically-enhanced Mechanochemical Methodsmentioning

confidence: 98%

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

Sipos¹,

Pálinkó²

2019

Studia UBB Chemia

Self Cite

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“…Figure 1a illustrates the characteristic reflection of the LDH structure (PDF 48-0065) [31,32] in a CaFe-LDH-nitrate intercalation, evidenced by diffraction peaks at typical positions, namely (001), (002), and ( 110), approximately at 11.5 • , 23.1 • , and 29.8 • , respectively. More-over, characteristic diffraction peaks of the Ca(OH) 2 structure were detected at around 19.7 • , 25.5 • , and 34.3 • [33].…”

Section: Characterization Of Cafe-ldhmentioning

confidence: 99%

“…The band around ~1620 cm −1 corresponds to the bending vibration of interlayer water molecules, while the band at ~1345 cm −1 signifies the symmetric O-N-O stretching vibration of M-NO 3− . Additionally, the translational mode of the surface Fe-OH group is evident as a signal at ~1053 cm −1 [31].…”

Section: Characterization Of Cafe-ldhmentioning

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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Super‐Stable Mineralization of Ni²⁺ Ions from Wastewater using CaFe Layered Double Hydroxide

Chi

Wang

et al. 2021

Adv Funct Materials

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The dealing/recycling of Ni‐containing wastewater pollution has aroused great attention both from environmental science and resource utilization perspectives. Herein, a classic CaFe‐layered double hydroxide (CaFe‐LDH) stabilizer, which exhibits a super‐stable mineralization efficiency for removing Ni2+ ions with a maximum saturated removal capacity of 321 mg g−1 is prepared. This stabilizer can remove not only 10 000 mg L−1 Ni2+ ions to a few mg L−1, but also 1 mg L−1 Ni2+ ions to 2 µg L−1. Moreover, the CaFe‐LDH shows great mineralization capability for the real Ni‐containing electroplating solution. It is demonstrated by ex situ X‐ray diffraction and extended X‐ray absorption fine structure characterization that the isomorphous substitution of Ca2+ by Ni2+ in the laminate of LDH dominates the mineralization process, and the CaFe‐LDH is transformed to the corresponding NiCaFe‐LDH accordingly. Further application of the resultant NiCaFe‐LDH shows improved electrocatalytic oxygen evolution reaction and photocatalytic CO2 reduction activities. This work paves great way for Ni2+ ion removal from wastewater and utilization of the recycled Ni resource.

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Effects of ultrasonic irradiation on the synthesis, crystallization, thermal and dissolution behaviour of chloride-intercalated, co-precipitated CaFe-layered double hydroxide

Cited by 16 publications

References 64 publications

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

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

Super‐Stable Mineralization of Ni²⁺ Ions from Wastewater using CaFe Layered Double Hydroxide

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Effects of ultrasonic irradiation on the synthesis, crystallization, thermal and dissolution behaviour of chloride-intercalated, co-precipitated CaFe-layered double hydroxide

Cited by 16 publications

References 64 publications

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

Layered double hydroxides, peculiar and versatile materials offering many research and application possibilities

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

Super‐Stable Mineralization of Ni2+ Ions from Wastewater using CaFe Layered Double Hydroxide

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Super‐Stable Mineralization of Ni²⁺ Ions from Wastewater using CaFe Layered Double Hydroxide