Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal

Simona Liliana Iconaru, Regis Guegan, Cristina Liana Popa, Mikael Motelica-Heino, Carmen Steluta Ciobanu, Daniela Predoi

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The aim of this study consisted to develop novel synthetic magnetite nanoparticles (nFe3O4) with preferential reactivity to trace elements (TE) for possible environmental applications as adsorbents. The synthetic magnetite materials obtained through the co-precipitation of both Fe3 + and Fe2 + ions (Fe2 + / Fe3 + = 0.5) were characterized by a set of complementary techniques: X-ray diffraction, transmission and scanning electron microscopy, Fourier transform infrared and Raman spectroscopy, and BET adsorption method. The resulting nFe3O4 displayed a wide specific surface area (100 m2 g− 1) with particles reaching a size of about 10 nm, smaller than those of the well-crystallized commercial ones (cFe3O4) estimated at 80 nm while showing a BET surface area of 6.8 m2 g− 1. The adsorption properties of the synthetic nFe304 magnetite nanoparticles were characterized and compared to the commercial analogous with the adsorption of both As and Cu. The equilibrium adsorption isotherms were properly fitted with Langmuir and Freundlich equation models and suggested that the developed iron oxides nanoparticles display a certain potential for removal and/or immobilization of TE from contaminated waters and/or soils, with an increase of 69.5% of the adsorbed amount compared to that of the commercial ones.

Original languageEnglish
Pages (from-to)128-135
Number of pages8
JournalApplied Clay Science
Volume134
DOIs
Publication statusPublished - 2016 Dec 1
Externally publishedYes

Fingerprint

Magnetite nanoparticles
Magnetite Nanoparticles
Adsorbents
magnetite
Trace Elements
adsorption
Adsorption
Ferrosoferric Oxide
surface area
trace element
Coprecipitation
Adsorption isotherms
Specific surface area
Raman spectroscopy
FTIR spectroscopy
Ions
iron oxide
immobilization
Nanoparticles
Transmission electron microscopy

Keywords

  • Adsorption
  • Arsenic
  • Copper
  • Magnetite
  • Nanoparticles

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Cite this

Iconaru, S. L., Guegan, R., Popa, C. L., Motelica-Heino, M., Ciobanu, C. S., & Predoi, D. (2016). Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal. Applied Clay Science, 134, 128-135. https://doi.org/10.1016/j.clay.2016.08.019

Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal. / Iconaru, Simona Liliana; Guegan, Regis; Popa, Cristina Liana; Motelica-Heino, Mikael; Ciobanu, Carmen Steluta; Predoi, Daniela.

In: Applied Clay Science, Vol. 134, 01.12.2016, p. 128-135.

Research output: Contribution to journalArticle

Iconaru, SL, Guegan, R, Popa, CL, Motelica-Heino, M, Ciobanu, CS & Predoi, D 2016, 'Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal', Applied Clay Science, vol. 134, pp. 128-135. https://doi.org/10.1016/j.clay.2016.08.019
Iconaru, Simona Liliana ; Guegan, Regis ; Popa, Cristina Liana ; Motelica-Heino, Mikael ; Ciobanu, Carmen Steluta ; Predoi, Daniela. / Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal. In: Applied Clay Science. 2016 ; Vol. 134. pp. 128-135.
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