Magnetic, structural and surface properties of functionalized maghemite nanoparticles for copper and lead adsorption

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dc.citation.issue46
dc.citation.volume7
dc.contributor.authorRamos Guivar, Juan A.
dc.contributor.authorSadrollahi, Elahe
dc.contributor.authorMenzel, Dirk
dc.contributor.authorFernandes, Edson Giuliani Ramos [UNIFESP]
dc.contributor.authorLopez, Elvis O.
dc.contributor.authorTorres, Marco Morales
dc.contributor.authorArsuaga, Jesus M.
dc.contributor.authorArencibia, Amaya
dc.contributor.authorLitterst, F. Jochen
dc.coverageCambridge
dc.date.accessioned2020-07-31T12:46:34Z
dc.date.available2020-07-31T12:46:34Z
dc.date.issued2017
dc.description.abstractIn this study, magnetic nanocomposites were developed and used as adsorbents for lead and copper from aqueous media. Structural, surface, magnetic and textural properties of functionalized maghemite nanoparticles synthesized by alkaline co-precipitation were studied. The surfaces of the iron oxide nanoparticles (Nps) were modified with different chemical agents such as fatty and amino acids, silica (SiO2), mesoporous silica (SBA-15), hydroxyapatite, multiwall carbon nanotubes (MWCNTs) and ethylenediaminetetraacetic acid (EDTA), obtaining NPs with mean particle sizes ranging from 7 to 16 nm according to Rietveld refinement and TEM images analysis. The physicochemical surface properties of the functionalized materials were studied via zeta potential (zeta) and Fourier transform infrared (FTIR) spectroscopy. Mossbauer spectroscopy (MS) as a function of temperature and DC magnetometry were used to study the magnetic properties. The superparamagnetic relaxation was studied by MS. The resolved spectra at 20 K confirm the presence of nanomaghemite phase. Besides, the saturation magnetization varies from 12 to 62 emu g(-1). A nitrogen adsorption-desorption technique was used to determine the specific surface area and to study the porous structure. The functionalized gamma-Fe2O3 Nps exhibited a Brunauer-Emmett-Teller (BET) specific surface area ranging from 74 to 214 m(2) g(-1) and revealed remarkable uptake capacities to remove Cu(II) and Pb(II) species from aqueous solutions.en
dc.description.affiliationNatl Univ San Marcos, Fac Phys Sci, POB 14-0149, Lima 14, Peru
dc.description.affiliationTech Univ Carolo Wilhelmina Braunschweig, Inst Phys Kondensierten Mat, D-38110 Braunschweig, Germany
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencia & Tecnol, Ave Cesare Mansueto Giulio Lattes 1201, BR-12247014 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationBrazilian Ctr Res Phys CBPF, BR-22290180 Rio De Janeiro, RJ, Brazil
dc.description.affiliationUniv Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59078970 Natal, RN, Brazil
dc.description.affiliationUniv Rey Juan Carlos, Environm & Chem Engn Grp, C Tulipan S-N, Madrid, Spain
dc.description.affiliationUnifespInstituto de Ciência e Tecnologia, Universidade Federal de São Paulo, Av. Cesare Mansueto Giulio Lattes, 1201, São José dos Campos, Brazil
dc.description.provenanceMade available in DSpace on 2020-07-31T12:46:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2017. Added 1 bitstream(s) on 2020-07-31T13:08:46Z : No. of bitstreams: 1 WOS000403012700023.pdf: 3486347 bytes, checksum: 840ac44770b1692c6793e49c0ecd3c28 (MD5)en
dc.description.sourceWeb of Science
dc.description.sponsorshipNational Council of Science, Technology and Technological Innovation (CONCYTEC/Cienciactiva-Peru)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipDAAD
dc.description.sponsorshipMinisterio de Economia y Competitividad of Spanish Government
dc.description.sponsorshipIDCNPq: 305748/2015-7
dc.description.sponsorshipIDMinisterio de Economia y Competitividad of Spanish Government: CTM2015-69246-R
dc.format.extent28763-28779
dc.identifierhttp://dx.doi.org/10.1039/c7ra02750h
dc.identifier.citationRsc Advances. Cambridge, v. 7, n. 46, p. 28763-28779, 2017.
dc.identifier.doi10.1039/c7ra02750h
dc.identifier.fileWOS000403012700023.pdf
dc.identifier.issn2046-2069
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/56278
dc.identifier.wosWOS:000403012700023
dc.language.isoeng
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofRsc Advances
dc.rightsAcesso aberto
dc.titleMagnetic, structural and surface properties of functionalized maghemite nanoparticles for copper and lead adsorptionen
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