Ion exchange collaborating coordination substitution: More efficient Cr(VI) removal performance of a water-stable CuII-MOF material

Shao, Zhichao; Huang, Chao; Wu, Qiong; Zhao, Yujie; Xu, Wenyuan; Liu, Yeye; Dang, Jian; Hou, Hongwei

doi:10.1016/j.jhazmat.2019.05.112

Cited by 98 publications

(35 citation statements)

References 59 publications

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“…Therefore, the treatment of acidic wastewater containing Cr(VI) has attracted extensive attention. Many efficient methods have been developed, such as adsorption, [3] photocatalysis, [4] ion exchange [3,5] and membrane filtration. [6] Among these methods, adsorption technology is more fundamental and efficient procedure for removing target pollutants with a high adsorption capacity.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

et al. 2020

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Photocatalysis is a promising solar energy conversion technology due to its potential applications in water treatment, searching for highly efficient photocatalytic materials is highly desirable. Herein, we have prepared a series of biochar(BC)/ZnFe2O4 magnetic nanocomposites by the calcination‐hydrothermal two‐step method. BC/ZnFe2O4 owns improved photoabsorption from 400 to 1300 nm. PL spectra of BC/ZnFe2O4 shows a weaker intensity compared with BC and ZnFe2O4, and BC/ZnFe2O4 generates a stronger photocurrent density (∼0.08 μA cm−2) than that of BC (0) or ZnFe2O4 (0.03 μA cm−2) under the visible light irradiation, implying efficient separation efficiency of photogeneration carriers. The investigation of pH (3, 5, 7, 9, 11) sensitivity of BC/ZnFe2O4 demonstrates that removal efficiency of Cr(VI) achieves the highest rate at pH=3. Under visible light irradiation, BC/ZnFe2O4 as photocatalyst can remove 80 % Cr(VI), higher than that of BC (0) or ZnFe2O4 (44 %). In addition, BC/ZnFe2O4 composites exhibit excellent cycling stability and can be easily separated for recycling due to its stability and unique magnetic properties. This work has presented a promising strategy in adsorption‐photocatalytic treatment of acidic wastewater containing heavy metals.

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Section: Introductionmentioning

confidence: 99%

“…Time-dependent adsorption efficiency (a) and Qe (b) of Cr(VI) (200 mL, 20 mg L À 1 ) at different pH(3,5,7,9,11) in the present of BC/ZnFe 2 O 4 .…”

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confidence: 99%

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

et al. 2020

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“…Dichromate (Cr 2 O 7 2− ) is a well‐known carcinogen anion diffusing rapidly as a result of its wide applications in chromium electroplating, pigment production, metallurgy, leather tanning, etc . Hexavalent chromium is known as toxic or poisonous element even at low concentrations, and WHO has assigned that Cr VI level must be below 0.05 mg L −1 for drinking water . Researches show that Cr VI is significantly more toxic than Cr III .…”

Section: Adsorption Of One Metal Ionmentioning

confidence: 99%

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

2020

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The efficient adsorption of heavy metal ions from wastewater has become a serious challenge from both environmental and biological viewpoints. Recently, porous metal‐organic frameworks (MOFs), with metallic clusters and organic linkers, have been developed as promising structures in the capture of different toxic and hazardous substances, including heavy metal ions, because of their unique features. Here there is a collection for recent progress in the field of water remediation from the variable‐valent metals in polluted water and the corresponding MOFs which are able to remove these pollutant agents from water. Meanwhile, effective factors in the absorption of metal ions are discussed. MOFs are considered to be a promising candidate for metal ions removal from wastewater.

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“…[20] To investigate the probablea dsorption mechanism, extended characterization techniques including infrared spectroscopy, PXRD experiments, and X-ray photoelectron spectroscopy (XPS) were conducted. Unfortunately,t he attempts were not successful and larger single crystals could not be obtained.…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Highest and Fastest Removal Rate of Pb^II Ions through Rational Functionalized Decoration of a Metal–Organic Framework Cavity

Afshariazar

Morsali

Wang

et al. 2020

Chemistry A European J

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To overcome the challenge of developing am ultipurpose adsorbentf or effective removal of toxic and carcinogenic Pb II ions from aqueous solutions, am ade-for-purpose functional group (N 1 ,N 2 -di(pyridine-4-yl)oxalamide) was rationally designed and incorporated into the cavities of a Zn metal-organic framework (MOF), namely,T MU-56.L arge enough pore size along with high densitieso fs trong metal chelating sites lead not only to the highest uptake capacity for Pb II ions, but also the fastest removal rate that has ever been reported for functionalized MOFs, occurring in just 20 s. Moreover,h igh concentrations of lead ions favor the ion exchange reaction, resulting in ah igh degree of metal exchange. In addition, TMU-56 can be ap ractical adsorbent because of its notable performance in the simultaneous removalo fs everal toxic and carcinogenic heavy metalsf rom wastewater,which has rare precedence.[a] F. Afshariazar,P rof. A. MorsaliSupporting information and the ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

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Ion exchange collaborating coordination substitution: More efficient Cr(VI) removal performance of a water-stable CuII-MOF material

Cited by 98 publications

References 59 publications

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

Highest and Fastest Removal Rate of Pb^II Ions through Rational Functionalized Decoration of a Metal–Organic Framework Cavity

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Ion exchange collaborating coordination substitution: More efficient Cr(VI) removal performance of a water-stable CuII-MOF material

Cited by 98 publications

References 59 publications

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe2O4 Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe2O4 Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

Highest and Fastest Removal Rate of PbII Ions through Rational Functionalized Decoration of a Metal–Organic Framework Cavity

Contact Info

Product

Resources

About

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Removal of Cr(VI) from Acid Wastewater by BC/ZnFe₂O₄ Magnetic Nanocomposite via the Synergy of Absorption‐Photocatalysis

Highest and Fastest Removal Rate of Pb^II Ions through Rational Functionalized Decoration of a Metal–Organic Framework Cavity