Ion-imprinted modified molecular sieves show the efficient selective adsorption of chromium(<scp>vi</scp>) from aqueous solutions

Lǐ, Jùnwén; Cheng, Haiming

doi:10.1039/d0ra08501d

Cited by 4 publications

(1 citation statement)

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“…With this memory effect, the ion-imprinted polymer adsorbent can remove template ion from environment. [21][22][23] As an environmental-friendly polymer, carboxymethyl cellulose (CMC) is a cheap and renewable biomass, which has good biocompatibility and degradability. CMC molecules contain a large number of hydroxyl and carboxyl groups, which can form complexes with metal ions through electrostatic attraction and chelation, thereby effectively removing metal ions in sewage.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

et al. 2021

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Highly efficient removal of hexavalent chromium using hexagonal disc shaped barium hydrogen phosphate

Gupta

Ben

2021

Env Prog and Sustain Energy

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Novel hexagonal disc‐shaped barium hydrogen phosphate was synthesized and analyzed by X‐ray diffraction, X‐ray photoelectron spectroscope, scanning electron microscope, transmission electron microscopy, thermogravimetric analysis, Brunauer–Emmett–Teller, and FTIR. The effects of adsorbent dose, adsorption time, initial concentration, initial pH, temperature, and sodium chloride on hexavalent chromium, Cr (VI), adsorption by BaHPO4 were studied. Effective Cr (VI) adsorption capacity was observed in the pH range of 4–5. The temperature‐dependent adsorption data showed sorption is endothermic and spontaneous in nature. The adsorption occurs via electrostatic interaction and is described by second order kinetic, and the adsorption isotherm was best fitted with the Langmuir model. The equilibrium adsorption capacity and maximum adsorption capacity were found to be 128.7 mg/g and 146.8 mg/g, respectively at room temperature and pH 6. Adsorbent is stable, recyclable, environmentally friendly, and can be produced on a large scale at a low cost. This can be utilized for the treatment of Cr (VI) contaminated water.

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Application Prospect of Ion-Imprinted Polymers in Harmless Treatment of Heavy Metal Wastewater

Du,

Xu,

Xue

et al. 2024

Molecules

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With the rapid development of industry, the discharge of heavy metal-containing wastewater poses a significant threat to aquatic and terrestrial environments as well as human health. This paper provides a brief introduction to the basic principles of ion-imprinted polymer preparation and focuses on the interaction between template ions and functional monomers. We summarized the current research status on typical heavy metal ions, such as Cu(II), Ni(II), Cd(II), Hg(II), Pb(II), and Cr(VI), as well as metalloid metal ions of the As and Sb classes. Furthermore, it discusses recent advances in multi-ion-imprinted polymers. Finally, the paper addresses the challenges faced by ion-imprinted technology and explores its prospects for application.

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Ion-imprinted modified molecular sieves show the efficient selective adsorption of chromium(vi) from aqueous solutions

Abstract: Molecular sieve 5A was modified with (3-aminopropyl) triethoxysilane (APTES) as the support matrix, on which 4-VP was used as the ionic imprinting group.

Cited by 4 publications

References 43 publications

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

Highly efficient removal of hexavalent chromium using hexagonal disc shaped barium hydrogen phosphate

Application Prospect of Ion-Imprinted Polymers in Harmless Treatment of Heavy Metal Wastewater

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Ion-imprinted modified molecular sieves show the efficient selective adsorption of chromium(vi) from aqueous solutions

Abstract: Molecular sieve 5A was modified with (3-aminopropyl) triethoxysilane (APTES) as the support matrix, on which 4-VP was used as the ionic imprinting group.

Cited by 4 publications

References 43 publications

Facile fabrication of ion-imprinted Fe3O4/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

Facile fabrication of ion-imprinted Fe3O4/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

Highly efficient removal of hexavalent chromium using hexagonal disc shaped barium hydrogen phosphate

Application Prospect of Ion-Imprinted Polymers in Harmless Treatment of Heavy Metal Wastewater

Contact Info

Product

Resources

About

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions

Facile fabrication of ion-imprinted Fe₃O₄/carboxymethyl cellulose magnetic biosorbent: removal and recovery properties for trivalent La ions