Remediation of waste water by Co–Fe layered double hydroxide and its catalytic activity

Moaty, S.A. Abdel; Farghali, Ahmed A.; Moussa, Mahmoud; Khaled, Rehab

doi:10.1016/j.jtice.2016.12.001

Cited by 38 publications

(16 citation statements)

References 58 publications

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“…by knowing R L parameter value we can predict whether the shape of the isotherm is favorable (0 where, Q e (mg/g) is the amount of adsorbed substances, C e (mg/l) is the concentration at equilibrium, K F (mg/g) is freundlich constant that gives information about adsorption capacity of adsorbed molecules onto catalyst www.nature.com/scientificreports www.nature.com/scientificreports/ surface 15 and n is freundlich constant. 1/n give indication about adsorption intensity and surface heterogeneity 83 . 1/n usually < 1, if favorable adsorption 84 .…”

Section: Resultsmentioning

confidence: 99%

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Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

El-Reesh

Farghali

Taha

et al. 2020

Sci Rep

127

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Novel modified Ni/Fe layered double hydroxides with different morphology of spherical-like shape were fabricated via using urea as a ligand and glycerol (Ni/Fe LDH/GL) with Ni:Fe molar ratios of 2:1 by the simplest co-precipitation method. Also, for comparison purposes, Ni/Fe LDH was synthesized to be used as a control one. A suggested interpretation for the morphology change was also given. The materials were characterized by X-ray diffraction (XRD), The Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), EDX for elemental analysis, high resolution transmission electron microscopy (HRTEM), Brunauer, Emmett, and Teller (BET) equation, particle size distributions and Zeta potential measurements. In addition, the synthesized materials were used as adsorbents for removal of potassium dichromate from aqueous solutions under various experimental conditions. The adsorption of Cr (VI) was strongly pH dependant and the pH PZC was studied. Kinetic studies were evaluated through different models including, pseudo first and second orders, mixed 1, 2 orders, intra particle diffusion and Avrami models. For adsorption isotherms, twoparameter models (Langmuir, Freundlich and Temkin) and three parameter models (Sips, Langmuir-Freundlich and Tooth) were investigated showing maximum adsorption capacity of 50.43 mg/g and 136.05 mg/g for Ni/Fe LDH and Ni/Fe LDH/GL, respectively. Also, the effect of temperature was investigated at (23, 35, 45, 55 °C) and the thermodynamic parameters (∆H°, ∆S° and ∆G°) were calculated showing exothermic and spontaneous adsorption process. The effect of coexisting anions (cl − , So 4 2− and HPO 4 2−) and humic acid at different concentrations on the removal efficiency of dichromate ions was investigated. Chemical stability and recyclability of these adsorbents were also studied. The intermolecular hydrogen bonds formation between dichromate ion, urea, glycerol, LDH was explored by Monte Carlo simulation This study suggested that the modified Ni/Fe LDH/GL materials were promising nanoadsorbents for efficient potassium dichromate removal. Water is the most precious natural source important for human beings, agriculture, and industrial activities. Recently, water bodies are potentially contaminated and polluted by many hazardous materials such as nuclear and industrial wastes, pharmaceuticals, organic contaminants and heavy metals. Heavy metals like cadmium, zinc, copper, lead, arsenic, mercury and chromium have significant threat to human health due to its potentially toxic effects 1,2. Chromium is one of heavy metals widely used in many industrial processes such as electroplating, dyes, mining, photography, textile and leather 3. Chromium present in water in a trivalent and hexavalent oxidation state, it is established that hexavalent chromium exhibits high toxicity toward living organisms than trivalent chromium which in contrast is a micronutrient 4. Hexavalent chromium is reported as a cause of respiratory cancers 5,6 and mutations and chromosomal dam...

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Section: Resultsmentioning

confidence: 99%

“…The BET (Brunauer, Emmett, and Teller) surface area of the as prepared materials was calculated from adsorption isotherms using a Quantachrome NOVA Automated Gas Sorption System. Zeta potential and partial size measurements were performed on a Malvern instrument (Malvern Instruments Ltd) 83 .…”

Section: Synthesis Ni/fe Ldhmentioning

confidence: 99%

Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

El-Reesh

Farghali

Taha

et al. 2020

Sci Rep

127

View full text Add to dashboard Cite

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“…An inert nitrogen gas with a flow rate 70 ml/min used to preheat the catalyst to 500 °C for 10 min and acetylene gas passed over the catalyst bed with a rate of 10 ml/min for 30 min. The maximum carbon yield % is produced at 500 °C decomposition temperature as discussed recently by Abdel Moaty et al [31]. Then, the product on the alumina cell was cooled to room temperature.…”

Section: Cnts Synthesis Using Co-fe Layered Double Hydroxide (Ldh) Asmentioning

confidence: 96%

Novel potentiometric sensors based on carbon and TiO2 nano tubes/ β-cyclodextrin for meclofenoxate hydrochloride micro determination in spiked surface water and urine samples

Khalil

Aleem

2018

Egypt. J. Chem.

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“…In the LDH phase, the molar ratio of Zn/Fe was 4:1. 33 Originally, an aqueous solution of TNT was sonicated for 30 min in 4 M NaOH solution. Solutions of Cu 2+ and Fe 3+ were included drop-wise under vigorous stirring until a pH 10.…”

Section: Preparation Of Tnt/cufe 2 O 4 /Zn-fe Mmomentioning

confidence: 99%

“…32 In specific cases, inorganic NPs inhibit the cellular efflux pump by disturbing the Ca 2+ concentration. 33 So far, the researchers denoted the efficacy of inorganic NPs in cancer therapy, but the main limitation is the only concern at high concentration. Additionally, the issue of cell penetration, translocation and subsequent aggregation inside the cell, or in the cellular compartments is still a critical case.…”

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confidence: 99%

Prostate Cancer Cellular Uptake of Ternary Titanate Nanotubes/CuFe2O4/Zn-Fe Mixed Metal Oxides Nanocomposite

El-Shahawy¹,

Moaty²,

Zaki³

et al. 2020

IJN

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Background: Certainly, there is a demand for stronger recognition of how nanoparticles can move through the cell membrane. Prostate cancer is one of the forcing sources of cancerrelevant deaths among men. Aim of the Work: The current research studied the power of prostate cancer cells to uptake a ternary nanocomposite TNT/CuFe 2 O 4 /Zn-Fe mixed metal oxides (MMO). Methodology: The nanocomposite was synthesized by a chemical method and characterized by a High-resolution transmission electron microscope, Field emission scanning electron microscope, X-ray diffraction, Fourier transmission infra-red, X-ray photoelectron spectroscopy, dynamic light scattering. Besides, it was implemented as an inorganic anticancer agent versus Prostate cancer PC-3 cells. Results: The results revealed cellular uptake validity, cell viability reduction, ultra-structures alterations, morphological changes and membrane damage of PC-3 cells. Conclusion: The prepared ternary nanocomposite was highly uptake by PC-3 cells and possessed cytotoxicity that was dose and time-dependent. To conclude, the study offered the potential of the investigated ternary nanocomposite as a promising prostate anticancer agent. BackgroundInvestigations have indicated that 25% of men are diagnosed with prostate cancer (PCa). 1 The clinical diagnostic approach is testing the prostate-specific antigen (PSA) level, where a concentration ˃ 4 ng/mL is considered a risk of biopsy. 2 The routine diagnostic technique is the digital rectal examination, and Multi-parametric-magnetic resonance imaging allows the potential diagnosis of PCa. 3 The distinct five stages of PCa are (zero) I, II, III, and IV, 4 and most cases of prostate cancer metastasis develop in the lymph nodes and the bones. 5 Choice of the treatment procedure, whatever surgery, radiation, hormone, Cryo-therapy, Vaccine, and Bone-directed treatment depends on the clinical stage, the age, and the general health of the individual. 6 The potential complications of the mentioned approaches are serious to consider. 7 The prostate size is the fundamental limitation of surgery, and 5 to 20% of cases suffer from stress incontinence after radical prostatectomy. Hormonal therapy leads to loss of libido, bone, and muscle mass. 8 Further, 30 to 50% experience erectile dysfunction after radiation therapy, 9 and urinary retention, urgency, and frequency are more common in Brachytherapy.

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Remediation of waste water by Co–Fe layered double hydroxide and its catalytic activity

Cited by 38 publications

References 58 publications

Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

Novel potentiometric sensors based on carbon and TiO2 nano tubes/ β-cyclodextrin for meclofenoxate hydrochloride micro determination in spiked surface water and urine samples

<p>Prostate Cancer Cellular Uptake of Ternary Titanate Nanotubes/CuFe<sub>2</sub>O<sub>4</sub>/Zn-Fe Mixed Metal Oxides Nanocomposite</p>

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