Selective adsorption of CuSO4 from mixed sulfate solutions by Cu(II) ion-imprinted polymers containing salicylaldoximes, ammonium cations, and tertiary amino groups

Zhang, Tianlin; Yue, Xiadan; Zhang, Keren; Li, Jinghao; Zhu, Caiyian; Zhang, Lei; Chen, Wei

doi:10.1016/j.matdes.2016.06.054

Cited by 15 publications

(3 citation statements)

References 30 publications

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“…Although NIPs exhibited a similar kinetic trend to Cu‐IIPs, the Q values of NIPs were much lower. Zhang et al reported that NIPs had a similar trend to Cu‐IIPs for adsorption rate 31 . This might be due to the non‐specific adsorption of NIPs caused by the absence of Cu 2+ in the preparation process; hence, these polymers lacked suitable recognition sites and imprinting cavities.…”

Section: Resultsmentioning

confidence: 99%

Effect of ethylene diamine tetra‐acetic acid and functional monomers on the structure and adsorption properties of copper (II) ion‐imprinted polymers

Chaipuang

Phungpanya

Thongpoon

et al. 2021

Polymers for Advanced Techs

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Novel copper (II) ion‐imprinted polymers (Cu‐IIPs) were synthesized by bulk polymerization using 1 mmol of copper (II) sulfate pentahydrate as the template ion, 1 mmol of ethylenediaminetetraacetic acid (EDTA) as the ligand, and 4 mmol of 4‐vinyl pyridine (4‐VP) or methacrylic acid (MAA) as the functional monomer dissolved in a porogen of 20 mL of methanol. Polymerization was performed with 20 mmol of pentaerythritol triacrylate (PETA) as the crosslinker and 1 mmol of benzoyl peroxide as the initiator. The effect of pH, time, initial concentration of Cu2+, and selectivity tests on the adsorption capacity were investigated using flame atomic absorption spectroscopy (FAAS). The prepared polymers were characterized by Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) analysis, scanning electron microscopy (SEM) and X‐ray diffraction (XRD). Adsorption capacity of Cu‐IIPs prepared with MAA increased from 0.794 to 2.163 mg g−1 at pH 6 within 24 hours, while Cu‐IIPs from MAA had high recognition ability with better recognition of Cu2+ than other ions. Thus, these Cu‐IIPs demonstrated potential application as an adsorbent for efficient removal of Cu2+ from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

Effect of ethylene diamine tetra‐acetic acid and functional monomers on the structure and adsorption properties of copper (II) ion‐imprinted polymers

Chaipuang

Phungpanya

Thongpoon

et al. 2021

Polymers for Advanced Techs

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“…The pH IEP of AC-Fe 3 O 4 , AC-Fe 3 O 4 -SiO 2, and AC-Fe 3 O 4 -SiO 2 -PEI was found to be 4.95, 3.53, and 11.69, respectively. The high IEP (pH 11.69) observed for AC-Fe 3 O 4 -SiO 2 -PEI was attributed to the cationic characteristic of PEI [38,39].…”

Section: Influence Of Solution Ph On Adsorption Of Cr(vi)mentioning

confidence: 94%

“…The pHIEP of AC-Fe3O4, AC-Fe3O4-SiO2, and AC-Fe3O4-SiO2-PEI was found to be 4.95, 3.53, and 11.69, respectively. The high IEP (pH 11.69) observed for AC-Fe3O4-SiO2-PEI was attributed to the cationic characteristic of PEI [38,39]. The pH of a solution affects the surface chemistry of adsorbents, ionization, and bioavailability of adsorbates [25,40].…”

Section: Influence Of Solution Ph On Adsorption Of Cr(vi)mentioning

confidence: 99%

Exploring the Iron Oxide Functionalized Biobased Carbon-silica-polyethyleneimine Composites for Hexavalent Chromium Removal from Dilute Aqueous Solutions

Qhubu

Nomngongo

Pakade

2021

Water

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The contamination of water resources by toxic hexavalent chromium remains a challenge. In this study, amino-functionalized iron oxide biobased carbon-silica composites were prepared through co-precipitation of Fe(II) and Fe(III) over Macadamia activated carbon and explored as feasible adsorbents for the removal of Cr(VI) from dilute aqueous solutions. The energy dispersive spectroscopy (EDS) elemental analysis confirmed the existence of Fe, Si, O, and C atoms, which form the backbone of the composite. The FTIR also showed the presence of Fe-O and Si-O-Si and Si-OH spectral bands, affirming the backbone of the adsorbents. Cr(VI) adsorption efficiency (5.76 mg/g) was achieved at pH 1 when an initial concentration of 2.5 mg/L, contact time of 90 min, and dosage concentration of 1.7 g/L were used. The data were best described by the Langmuir adsorption model and pseudo-second-order rate model. ΔG° (−3 to −12 kJ/mol) and ΔH° (46, 12 and 5 kJ/mol) values affirmed that the adsorption of Cr(VI) was spontaneous and endothermic and dominated by chemical interactions.

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Synthesis and application of ion imprinting polymer coated magnetic multi-walled carbon nanotubes for selective adsorption of nickel ion

Shang

Zhang

et al. 2018

Applied Surface Science

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Selective adsorption of CuSO4 from mixed sulfate solutions by Cu(II) ion-imprinted polymers containing salicylaldoximes, ammonium cations, and tertiary amino groups

Cited by 15 publications

References 30 publications

Effect of ethylene diamine tetra‐acetic acid and functional monomers on the structure and adsorption properties of copper (II) ion‐imprinted polymers

Effect of ethylene diamine tetra‐acetic acid and functional monomers on the structure and adsorption properties of copper (II) ion‐imprinted polymers

Exploring the Iron Oxide Functionalized Biobased Carbon-silica-polyethyleneimine Composites for Hexavalent Chromium Removal from Dilute Aqueous Solutions

Synthesis and application of ion imprinting polymer coated magnetic multi-walled carbon nanotubes for selective adsorption of nickel ion

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