Self-polymerization magnetic hydrogel for Cu and Pb adsorption from aqueous solutions: Theoretical insight and implication

Feng, Zhengyuan; Feng, Chuanping; Chen, Nan; Wang, Shizhong

doi:10.1016/j.colsurfa.2023.132298

Colloids and Surfaces A: Physicochemical and Engineering Aspect

2023

DOI: 10.1016/j.colsurfa.2023.132298

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Self-polymerization magnetic hydrogel for Cu and Pb adsorption from aqueous solutions: Theoretical insight and implication

Zhengyuan Feng,

Chuanping Feng,

Nan Chen

et al.

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Cited by 8 publications

References 63 publications

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A novel starch‐based composite hydrogel enhanced by activated charcoal from the banana peel for water decontamination

Maia,

Pereira,

da Silva

et al. 2024

J of Applied Polymer Sci

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The efficient removal of potential toxic elements (PTEs) from aqueous systems is an important challenge in water purification and industrial effluent treatment. Starch‐based hydrogels have shown promise in this context due to their unique properties, such as high absorption capacity and water retention. This work synthesized a novel hydrogel with and without activated charcoal (AC) from banana peel (5 wt.%) and trisodium citrate as a crosslinking agent and starch to remove PTEs. These hydrogels were characterized by Fourier‐transformed infrared (FTIR), scanning electron microscopy, TGA, XRD, water absorption, and zero‐charge point techniques. Subsequently, the affinity of AC, neat hydrogel, and the composite hydrogel for removing Cr6+, Cd2+, Ni2+, Mn2+, Zn2+, and Cu2+ in aqueous solution was evaluated. FTIR confirmed a crosslinking reaction between the starch molecules and the crosslinking agent (trisodium citrate). Besides, the addition of hydrogel+5%AC altered the crosslinking process. Adding AC to the hydrogel composite increased crystallinity, thermal stability, and porous size. The highest removal efficiency of neat hydrogel and hydrogel+5%AC was for Cr6+, obtaining 83.2% and 98.5%, respectively. As for the AC, the removal of Cu2+ was satisfactory, with 80.4%. Thus, hydrogel+5%AC proves to be a highly viable adsorbent for posttreatment of wastewater due to its ability to efficiently remove PTEs.

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A novel starch‐based composite hydrogel enhanced by activated charcoal from the banana peel for water decontamination

Maia,

Pereira,

da Silva

et al. 2024

J of Applied Polymer Sci

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Construction and Properties of Superhydrophobic Materials Using SiO2 Hybrid High Fluorine Epoxy Polymers

Hou,

Yan

2024

Arab J Sci Eng

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Superhydrophobic surfaces have been extensively studied for their self-cleaning properties. However, most of the constructed superhydrophobic surfaces have problems of changing the surface morphology and color of paper/cloth. An extremely dilute superhydrophobic solution was prepared by hybrid assembly of aminated nano SiO 2 and high uorine epoxy polymer P(FOEMA-r-GMA). The preparation of superhydrophobic cotton (SHC) and superhydrophobic book paper (SHBP) were studied through the optimal construction conditions of solution impregnation method. The optimal construction conditions for SHC were as follows: the concentration of uorinated epoxy polymer was 3 mg/mL, the soaking time was 5 hours, the drying time was 8 hours, and the drying temperature was 120 o C. The maximum WCA is 158 ° ± 3 o , and the minimum WRA is 4 o ± 3 o . SHC surface had good hydrophobic effect, acid and alkali resistance, self-cleaning effect, and its surface morphology remains basically unchanged. SHC could be used for oil water separation with a maximum oil water separation rate of 98.4%. The optimal construction conditions for SHBP were: the concentration of uorinated epoxy polymer was 3 mg/mL, the soaking time was 9 hours, the drying time was 6 hours, the maximum WCA was 155 o ± 3 o , and the minimum WRA was 6 o ± 1 o . The hydrophobicity of SHBP was signi cantly improved, it would selective adsorbing oil from the oil water mixture and slightly reduce its smoothness.

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Synthesis, characterization and adsorption of Pb(Ⅱ), Cd(Ⅱ) and Cu(Ⅱ) by red mud/polyacrylic acid/sodium carboxymethyl cellulose hydrogel

Zhao,

Deng,

Wang

et al. 2025

Arabian Journal of Chemistry

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Self-polymerization magnetic hydrogel for Cu and Pb adsorption from aqueous solutions: Theoretical insight and implication

Cited by 8 publications

References 63 publications

A novel starch‐based composite hydrogel enhanced by activated charcoal from the banana peel for water decontamination

A novel starch‐based composite hydrogel enhanced by activated charcoal from the banana peel for water decontamination

Construction and Properties of Superhydrophobic Materials Using SiO2 Hybrid High Fluorine Epoxy Polymers

Synthesis, characterization and adsorption of Pb(Ⅱ), Cd(Ⅱ) and Cu(Ⅱ) by red mud/polyacrylic acid/sodium carboxymethyl cellulose hydrogel

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