Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption

The capability of paramegnetic iron-containing hydroxyapatite (Fe-nAp) and waste bioorganic subtrates templeted iron-containing hydroxyapatite (SBO-Fe-nAp) nanoparticles, as Pb(II) cations adsorbants were investigated and compared to those of synthetic hydroxyapatite (nAp). Surface and bulk characte...

Descripción completa

Detalles Bibliográficos
Autores principales: Mercado, D. F., Rubert, Aldo Alberto, Magnacca, G., Malandrino, M., Sapino, S., Caregnato, Paula, Bianco Prevot, A., González, Mónica Cristina
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Química
Paramagnetic Nanoparticles
Pb(II) Adsorption
Cu(II) Adsorption
Bio-Organic Substrates
Surface Chemistry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/170140
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-170140
record_format dspace
spelling I19-R120-10915-1701402024-09-14T04:08:47Z http://sedici.unlp.edu.ar/handle/10915/170140 Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption Mercado, D. F. Rubert, Aldo Alberto Magnacca, G. Malandrino, M. Sapino, S. Caregnato, Paula Bianco Prevot, A. González, Mónica Cristina 2017 2024-09-13T14:49:31Z en Química Paramagnetic Nanoparticles Pb(II) Adsorption Cu(II) Adsorption Bio-Organic Substrates Surface Chemistry The capability of paramegnetic iron-containing hydroxyapatite (Fe-nAp) and waste bioorganic subtrates templeted iron-containing hydroxyapatite (SBO-Fe-nAp) nanoparticles, as Pb(II) cations adsorbants were investigated and compared to those of synthetic hydroxyapatite (nAp). Surface and bulk characterization techniques as XPS, XRD, electrophoretic mobility, FTIR spectroscopy, DLS, and TEM were used to investigate the adsorption mechanisms involved and ICP-AES to determine Pb(II) concentrations in aqueous solutions. The apatite-based nanoparticles were found to be efficient materials for the irreversible adsorption of Pb(II) ions from aqueous solutions, with maximum adsorption capacity increasing as: hydroxyapatite<waste bioorganic subtrates templeted ironcontaining hydroxyapatite < iron-containing hydroxyapatite. Adsorption capacities of 1500 mg g−1 observed for iron-containing hydroxyapatite, are among the highest reported for Pb(II) adsorption. The high surface to volume ratio, low crystallinity, and the negatively charged surface, strongly favour aqueous Pb(II) adsorption on Fe-containing apatites over the positively charged crystalline hydroxyapatite. The adsorption mechanisms involved depend on the available surface hydroxyl and carboxyl groups as well as on the formation of stable lead-containing hydroxyapatite-like structures. Moreover, bimetal adsorption experiments involving Cu(II) and Pb(II) ions show particular selectivity depending on the surface chemistry of the hydroxyapatite-based adsorbent. While hydroxyapatite is selective towards Pb(II), Fe-containing hydroxyapatite selectivity depends on the relative [Pb]/[Cu] ratio, and waste bioorganic subtrates templeted Fe-containing hydroxyapatite, adsorbs both ions with similar capability. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Paramagnetic Nanoparticles
Pb(II) Adsorption
Cu(II) Adsorption
Bio-Organic Substrates
Surface Chemistry
spellingShingle Química
Paramagnetic Nanoparticles
Pb(II) Adsorption
Cu(II) Adsorption
Bio-Organic Substrates
Surface Chemistry
Mercado, D. F.
Rubert, Aldo Alberto
Magnacca, G.
Malandrino, M.
Sapino, S.
Caregnato, Paula
Bianco Prevot, A.
González, Mónica Cristina
Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
topic_facet Química
Paramagnetic Nanoparticles
Pb(II) Adsorption
Cu(II) Adsorption
Bio-Organic Substrates
Surface Chemistry
description The capability of paramegnetic iron-containing hydroxyapatite (Fe-nAp) and waste bioorganic subtrates templeted iron-containing hydroxyapatite (SBO-Fe-nAp) nanoparticles, as Pb(II) cations adsorbants were investigated and compared to those of synthetic hydroxyapatite (nAp). Surface and bulk characterization techniques as XPS, XRD, electrophoretic mobility, FTIR spectroscopy, DLS, and TEM were used to investigate the adsorption mechanisms involved and ICP-AES to determine Pb(II) concentrations in aqueous solutions. The apatite-based nanoparticles were found to be efficient materials for the irreversible adsorption of Pb(II) ions from aqueous solutions, with maximum adsorption capacity increasing as: hydroxyapatite<waste bioorganic subtrates templeted ironcontaining hydroxyapatite < iron-containing hydroxyapatite. Adsorption capacities of 1500 mg g−1 observed for iron-containing hydroxyapatite, are among the highest reported for Pb(II) adsorption. The high surface to volume ratio, low crystallinity, and the negatively charged surface, strongly favour aqueous Pb(II) adsorption on Fe-containing apatites over the positively charged crystalline hydroxyapatite. The adsorption mechanisms involved depend on the available surface hydroxyl and carboxyl groups as well as on the formation of stable lead-containing hydroxyapatite-like structures. Moreover, bimetal adsorption experiments involving Cu(II) and Pb(II) ions show particular selectivity depending on the surface chemistry of the hydroxyapatite-based adsorbent. While hydroxyapatite is selective towards Pb(II), Fe-containing hydroxyapatite selectivity depends on the relative [Pb]/[Cu] ratio, and waste bioorganic subtrates templeted Fe-containing hydroxyapatite, adsorbs both ions with similar capability.
format Articulo
Articulo
author Mercado, D. F.
Rubert, Aldo Alberto
Magnacca, G.
Malandrino, M.
Sapino, S.
Caregnato, Paula
Bianco Prevot, A.
González, Mónica Cristina
author_facet Mercado, D. F.
Rubert, Aldo Alberto
Magnacca, G.
Malandrino, M.
Sapino, S.
Caregnato, Paula
Bianco Prevot, A.
González, Mónica Cristina
author_sort Mercado, D. F.
title Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
title_short Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
title_full Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
title_fullStr Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
title_full_unstemmed Versatile Fe-Containing Hydroxyapatite Nanomaterials as Efficient Substrates for Lead Ions Adsorption
title_sort versatile fe-containing hydroxyapatite nanomaterials as efficient substrates for lead ions adsorption
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/170140
work_keys_str_mv AT mercadodf versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT rubertaldoalberto versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT magnaccag versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT malandrinom versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT sapinos versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT caregnatopaula versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT biancoprevota versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
AT gonzalezmonicacristina versatilefecontaininghydroxyapatitenanomaterialsasefficientsubstratesforleadionsadsorption
_version_ 1825276027036762112

Ejemplares similares