skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

Polyethylenimine Grafted onto Nano-NiFe[sub.2]O[sub.4]@SiO[sub.2] for the Removal of CrO[sub.4][sup.2−], Ni[sup.2+], and Pb[sup.2+] Ions from Aqueous Solutions

Molecules (Basel, Switzerland), 2023-12, Vol.29 (1) [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules29010125

Full text available

Citations Cited by
  • Title:
    Polyethylenimine Grafted onto Nano-NiFe[sub.2]O[sub.4]@SiO[sub.2] for the Removal of CrO[sub.4][sup.2−], Ni[sup.2+], and Pb[sup.2+] Ions from Aqueous Solutions
  • Author: Khalaj, Mehdi ; Khatami, Seyed-Mola ; Kalhor, Mehdi ; Zarandi, Maryam ; Anthony, Eric Tobechukwu ; Klein, Axel
  • Subjects: Pharmaceutical industry
  • Is Part Of: Molecules (Basel, Switzerland), 2023-12, Vol.29 (1)
  • Description: Polyethyleneimine (PEI) has been reported to have good potential for the adsorption of metal ions. In this work, PEI was covalently bound to NiFe[sub.2]O[sub.4]@SiO[sub.2] nanoparticles to form the new adsorbent NiFe[sub.2]O[sub.4]@SiO[sub.2]–PEI. The material allowed for magnetic separation and was characterized via powder X-ray diffraction (PXRD), showing the pattern of the NiFe[sub.2]O[sub.4] core and an amorphous shell. Field emission scanning electron microscopy (FE-SEM) showed irregular shaped particles with sizes ranging from 50 to 100 nm, and energy-dispersive X-ray spectroscopy (EDX) showed high C and N contents of 36 and 39%, respectively. This large amount of PEI in the materials was confirmed by thermogravimetry–differential thermal analysis (TGA-DTA), showing a mass loss of about 80%. Fourier-transform IR spectroscopy (FT-IR) showed characteristic resonances of PEI dominating the spectrum. The adsorption of CrO[sub.4] [sup.2−], Ni[sup.2+], and Pb[sup.2+] ions from aqueous solutions was studied at different pH, temperatures, metal ion concentrations, and adsorbent dosages. The maximum adsorption capacities of 149.3, 156.7, and 161.3 mg/g were obtained for CrO[sub.4] [sup.2−], Ni[sup.2+], and Pb[sup.2+], respectively, under optimum conditions using 0.075 g of the adsorbent material at a 250 mg/L ion concentration, pH = 6.5, and room temperature.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 1420-3049
    EISSN: 1420-3049
    DOI: 10.3390/molecules29010125
  • Source: GFMER Free Medical Journals
    PubMed Central
    Alma/SFX Local Collection
    ProQuest Central
    DOAJ Directory of Open Access Journals
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait