Performance of novel adsorbent prepared by magnetic metal-organic framework (MOF) modified by potassium nickel hexacyanoferrate for removal of Cs + from aqueous solution

Naeimi, Shakiba; Faghihian, Hossein

doi:10.1016/j.seppur.2016.11.028

Cited by 172 publications

(64 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The powder XRD profiles of all nine compositions of NaCoHCF are given in Figure . In general, the profiles are found to match those of the PBA . However, as the number of Na and water varied with vacancy, the impact of this change on the lattice environment becomes clear.…”

Section: Resultsmentioning

confidence: 76%

“…Metal hexacyanoferrate (MHCF) compounds, commonly known as the Prussian Blue analogs (PBAs), are a group of materials with the chemical composition of A y M[Fe(CN) 6 ] 1− x ⋅ z H 2 O, in which A represents cations such as Na + and K + , whereas M represents transition metals like Fe, Co, Ni, Cu, and Zn . PBAs are widely studied for various applications, among which Cs decontamination is a much‐discussed topic . High Cs selectivity is widely reported .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interpretation of the Role of Composition on the Inclusion Efficiency of Monovalent Cations into Cobalt Hexacyanoferrate

Zhang

Kawamoto

Jiang

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

Cobalt hexacyanoferrate of various compositions was prepared in flow mode and the role of the vacancy on the structure, thermogravimetric (TG) properties, and the adsorption efficiency was studied. The material, NayCo[Fe(CN)6]1−x⋅z H2O, with a minimum vacancy of x=0.014 to the highest x=0.47, was obtained. The TG‐differential scanning calorimetry (DSC) profile showed a distinct influence of the vacancy on the water release temperature. Materials with x>0.35 showed a smooth release of water at a relatively lower temperature. However, for the materials with x<0.35, water release took place in multiple steps, suggesting the existence of various forms of water. The FTIR profiles supported the existence of free and bonded water molecules. However, the materials with multiple water peaks in the FTIR spectra showed a shift of the major XRD peaks when heated at 285 °C in N2 atmosphere. Regarding the effect of the vacancy on the adsorption behavior, for NH4, the adsorption was found to be proportional to the number of Na atoms in the material, confirming the ion‐exchange process. On the contrary, the materials with low vacancy and high Na content showed nominal Cs adsorption capacity. Interestingly, the K adsorption capacity was found to be in between that of the other two ions. This means the ionic size decides the rate of placement into the interstitial sites. For larger ions like Cs, the ease of percolation via the vacancy decides the overall adsorption efficiency.

show abstract

Section: Resultsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Interpretation of the Role of Composition on the Inclusion Efficiency of Monovalent Cations into Cobalt Hexacyanoferrate

Zhang

Kawamoto

Jiang

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…The excellent effect of dissolved oxygen on the performance of photocatalysts has been reported by Cavicchioli et al . .…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we tested different temperatures of naproxen solution (30,40,50 and 60°C) as degradation conditions and obtained results that showed that increased temperature caused solutions with lower dissolved oxygen and yielded a decrease in degradation efficiency (Fig. 13).…”

Section: Superoxide Radical (Omentioning

confidence: 99%

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

Torki

Faghihian

2018

Photochem & Photobiology

Self Cite

View full text Add to dashboard Cite

This research was aimed to prepare a magnetically photocatalyst enabling to degrade pharmaceutical wastewater and detoxification of pollutant such as naproxen, by visible light irradiation. The nano-sized NiS and NiO photocatalysts exhibit higher reactivity than their microsized counterparts, but separation of the used photocatalyst from the degradation solution is hard and imperfect. To remove this difficulty, magnetic polypyrrole core-shell (Fe O @PPY) was synthesized and employed as catalyst support. The magnetization property of the synthesized photocatalysts measured by VSM technique indicated that the photocatalysts were sufficiently magnetized to be readily separated from degradation solution by use of external magnetic field. The DRS study showed that the band gap of the photocatalysts shifted to lower energy after immobilization on the support materials leading to higher degradation efficiency. The optimal efficiency was obtained with the catalysts loaded with 50% of NiO and 50% of NiS. The augmenting effect of H O and the inhibition influence of some organic and inorganic compounds on the degradation process were studied. Regeneration of the used photocatalyst was performed by heat treatment, and the catalyst treated at 400°C retained most of its initial capacity. The degradation capacity was kinetically fast, and the equilibrium was attained within 30 min.

show abstract

“…MOFs can exhibit ultrahigh porosity and high thermal and chemical stability and have been altered for use in various adsorptionrelated areas [43]. Recently, a number of researchers started to investigate the capability of MOFs to remove compounds including removal of metal ions [44][45][46] and toxic dyes [47,48] in aqueous environment. These studies unveiled the fact that several types of MOFs can remain intact in aqueous solutions and show exceptional capacities to remove pollutants from water compared to traditional adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Ce-bpdc for the Effective Removal of Fluoride from Aqueous Solution

Zhao

Cui

Fang

et al. 2017

Advances in Condensed Matter Physics

View full text Add to dashboard Cite

Ce-1,1 -biphenyl-4,4 -dicarboxylic acid (Ce-bpdc), a novel type of metal organic framework, was synthesized and applied to remove excessive fluoride from water. The structure and morphology of Ce-bpdc were measured by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The effects, such as saturated adsorption capacity, HCO 3 − , and pH, were investigated. The optimal pH value for fluoride adsorption was the range from 5 to 6. The coexisting bicarbonate anions have a little influence on fluoride removal. The fluoride adsorption over the Ce-bpdc adsorbent could reach its equilibrium in about 20 min. The Ce-bpdc coordination complex exhibited high binding capacity for fluoride ions. The maximum adsorption capacity calculated from Langmuir model was high up to 45.5 mg/g at 298 K (pH = 7.0) and the removal efficiency was greater than 80%. In order to investigate the mechanism of fluoride removal, various adsorption isotherms such as Langmuir and Freundlich were fitted. The experimental data revealed that the Langmuir isotherm gave a more satisfactory fit for fluoride removal. Finally, the tested results of ground water samples from three places, Yuefang, Jiangji, and Sanyi which exhibited high removal efficiency, also demonstrate the potential utility of the Ce-bpdc as an effective adsorbent.

show abstract

Performance of novel adsorbent prepared by magnetic metal-organic framework (MOF) modified by potassium nickel hexacyanoferrate for removal of Cs + from aqueous solution

Cited by 172 publications

References 41 publications

Interpretation of the Role of Composition on the Inclusion Efficiency of Monovalent Cations into Cobalt Hexacyanoferrate

Interpretation of the Role of Composition on the Inclusion Efficiency of Monovalent Cations into Cobalt Hexacyanoferrate

Visible Light Degradation of Naproxen by Enhanced Photocatalytic Activity of NiO and NiS, Scavenger Study and Focus on Catalyst Support and Magnetization

Synthesis of a Novel Ce-bpdc for the Effective Removal of Fluoride from Aqueous Solution

Contact Info

Product

Resources

About