Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal
Source abstract
Abstract
The aim of this study was to develop synthetic magnetite nanoparticles (nFe3O4) with preferential reactivity for trace elements (TE) for possible environmental applications as adsorbents. The synthetic magnetite materials obtained through the co-precipitation of both Fe 3+ and Fe 2+ ions (Fe 2+ / Fe 3+ = 0.5) were characterized by a set of complementary techniques such as 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 m 2 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 commercial analogues with the adsorption of both arsenic and copper. The equilibrium adsorption isotherms were properly fitted with Langmuir and Freundlich equation models. The maximum adsorption capacity for the solid phase, qm, obtained for the adsorption of arsenic onto nFe3O4 had an increase of 69.46% comparative to the value obtained for the adsorption of arsenic on cFe3O4. The results suggested that the iron oxide nanoparticles
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Arsenic contamination and mitigation · Iron oxide chemistry and applications · Adsorption and biosorption for pollutant removal
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent10.1016/j.jwpe.2015.02.006 ↗
2. Adsorption of gases in multimolecular layers10.1021/ja01269a023 ↗
3. A novel chitosan/clay/magnetite composite for adsorption of Cu(II) and As(V)10.1016/j.cej.2012.06.126 ↗
4. Adsorptive removal of Cu(II) from aqueous solutions using non-crosslinked and crosslinked chitosan-coated bentonite beads10.1016/j.desal.2011.02.051 ↗
5. Adsorption characteristics of some Cu(II) complexes on alumino silicates10.1016/0043-1354(81)90139-1 ↗
6. A review of the arsenic cycle in natural waters10.1016/0043-1354(72)90052-8 ↗
7. Recent progress and future challenges on the use of high performance magnetic nano-adsorbents in environmental applications10.1016/j.cej.2014.06.119 ↗
8. Raman scattering in spinel structure ferrites10.1016/0025-5408(88)90255-3 ↗
9. Nonionic organoclay: a ‘Swiss army knife’ for the adsorption of micro-pollutants?10.1016/j.jcis.2014.09.043 ↗
10. Spinel ferrite magnetic adsorbents: alternative future materials for water purification?10.1016/j.ccr.2016.01.012 ↗
11. Journal of Hydrology 'A review of arsenic presence in China drinkingwater'10.1016/j.jhydrol.2013.04.007 ↗
12. Vibrational spectroscopic characterization of hematite, maghemite, and magnetite thin films produced by vapor deposition10.1021/am1004943 ↗
13. Arsenic(V) removal from groundwater using nano scale zero-valent iron as a colloidal reactive barrier material environ10.1021/es0520924 ↗
14. Khatiri · 2012
15. Comparisons of particle size measurement method for colloidal silica
16. Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres10.1016/j.jmmm.2003.07.006 ↗
17. Adsorption of methyl violet from aqueous solution by halloysite nanotubes10.1016/j.desal.2010.10.006 ↗
18. Magnetic iron oxide (Fe3O4) nanoparticles from tea waste for arsenic removal10.1016/j.jmmm.2013.12.008 ↗
19. Fabrication and characterization of SiO2/(3-aminopropyl) triethoxysilane-coated magnetite nanoparticles for lead(II) removal from aqueous solution10.1007/s10904-013-9820-2 ↗
20. Synthesis, surface modification and characterization of biocompatible magnetic iron oxide nanoparticles for biomedical applications10.3390/molecules18077533 ↗
21. Magnetic fluids and process for obtaining them
22. Magnetic fluids and process for obtaining them
23. The effect of nanocrystalline magnetite size on arsenic removal10.1016/j.stam.2006.10.005 ↗
24. Removal of lead(II), copper(II) and zinc(II) ions from aqueous solutions using magnetic amine-functionalized mesoporous silica nanocomposites
25. Magnetic adsorbents for the treatment of water/wastewater—a review10.1016/j.jwpe.2015.07.001 ↗
26. Copper(II) removal from aqueous solutions by fly ash10.1016/0043-1354(85)90145-9 ↗
27. A study on iron oxide nanoparticles coated with dextrin obtained by coprecipitation
28. Nanomaterials and water purification: opportunities and challenges10.1007/s11051-005-7523-5 ↗
29. Schwertmann · 2003
30. Raman spectroscopic study of magnetite (FeFe2O4): a new assignment for the vibrational spectrum10.1016/S0022-4596(03)00294-9 ↗
31. Adsorption of arsenic to magnetite nanoparticles: effect of particle concentration, pH, ionic strength, and temperature10.1897/08-155.1 ↗
32. Surface engineered magnetic nanoparticles for removal of toxic metal ions and bacterial pathogens10.1016/j.jhazmat.2011.06.074 ↗
33. Magnetic composite and environmental super adsorbent for dye sequestration - a review10.1016/j.enmm.2014.06.001 ↗
34. A review of the source, behaviour and distribution of arsenic in natural waters10.1016/S0883-2927(02)00018-5 ↗
35. Suzuki · 1990
36. Adsorption mechanisms of emerging micro-pollutants with a clay mineral: case of tramadol and doxepine pharmaceutical products10.1016/j.jcis.2015.04.029 ↗
37. Removal of As (V) from aqueous solution by activated carbon-based hybrid adsorbents: impact of experimental conditions10.1016/j.cej.2013.02.096 ↗
38. Surface chemical properties and adsorption of Cu (II) on nanoscale magnetite in aqueous solutions10.1016/j.desal.2011.03.040 ↗
39. Reduction of Hg (II) to Hg (0) by magnetite10.1021/es9003608 ↗
40. Re-examination of characteristic FTIR spectrum of secondary layer in bilayer oleic acid-coated Fe3O4 nanoparticles10.1016/j.apsusc.2009.11.079 ↗
41. Competitive adsorption of As(V) with co-existing ions on porous hematite in aqueous solutions10.1016/j.jece.2015.05.011 ↗
42. Preparation and evaluation of a novel Fe–Mn binary oxide adsorbent for effective arsenite removal10.1016/j.watres.2007.02.009 ↗
43. Fe3O4 and MnO2 assembled on honeycomb briquette cinders (HBC) for arsenic removal from aqueous solutions10.1016/j.jhazmat.2015.01.004 ↗