Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects

Hybrid mesoporous materials are potentially useful for metal ion scavenging and retrieval because of their high surface areas, controlled accessibility and tailored functionalization. Some aspects that are linked to the performance of HMM include pore accessibility, stability of the organic function...

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Detalles Bibliográficos
Autores principales:	Videla, Mariela, Soler Illia, Galo Juan de Avila Arturo
Publicado:	2012
Materias:	Aminopropyl function Hybrid adsorbents Ion scavenging Mesoporous materials Reusable adsorbent Sol-gel Water treatment Acid media Acidic media Adsorption desorption Adsorption efficiency Adsorption process Amino group Aminopropyl Copper sulfate Cu adsorption Functionalizations High surface area Large pores Material surface Materials processing Mesoporous Silica Organic function Organic group Sulfate solutions X-ray photoelectron spectroscopy studies Adsorbents Adsorption Desorption Hybrid materials Materials properties Metal ions Photoelectrons Polycondensation Reusability Silica Sol-gels X ray photoelectron spectroscopy copper sulfate sba 15 n silicon dioxide unclassified drug adsorption cation complexation copper compound desorption recycling scavenging (chemistry) silica sulfate wastewater water treatment X-ray spectroscopy article complex formation molecular stability polymerization porosity substitution reaction synthesis Copper Sulfate Microscopy, Electron, Scanning Photoelectron Spectroscopy Porosity Propylamines Recycling Silicon Dioxide Spectroscopy, Fourier Transform Infrared Surface Properties Water Pollutants, Chemical Water Purification
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043894_v223-224_n_p53_Lombardo http://hdl.handle.net/20.500.12110/paper_03043894_v223-224_n_p53_Lombardo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_03043894_v223-224_n_p53_Lombardo2023-06-08T15:29:27Z Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects Videla, Mariela Soler Illia, Galo Juan de Avila Arturo Aminopropyl function Hybrid adsorbents Ion scavenging Mesoporous materials Reusable adsorbent Sol-gel Water treatment Acid media Acidic media Adsorption desorption Adsorption efficiency Adsorption process Amino group Aminopropyl Copper sulfate Cu adsorption Functionalizations High surface area Hybrid adsorbents Large pores Material surface Materials processing Mesoporous Silica Organic function Organic group Sulfate solutions X-ray photoelectron spectroscopy studies Adsorbents Adsorption Desorption Hybrid materials Materials properties Metal ions Photoelectrons Polycondensation Reusability Silica Sol-gels Water treatment X ray photoelectron spectroscopy Mesoporous materials copper sulfate sba 15 n silicon dioxide unclassified drug adsorption cation complexation copper compound desorption recycling scavenging (chemistry) silica sulfate wastewater water treatment X-ray spectroscopy adsorption article complex formation molecular stability polymerization porosity substitution reaction synthesis X ray photoelectron spectroscopy Adsorption Copper Sulfate Microscopy, Electron, Scanning Photoelectron Spectroscopy Porosity Propylamines Recycling Silicon Dioxide Spectroscopy, Fourier Transform Infrared Surface Properties Water Pollutants, Chemical Water Purification Hybrid mesoporous materials are potentially useful for metal ion scavenging and retrieval because of their high surface areas, controlled accessibility and tailored functionalization. Some aspects that are linked to the performance of HMM include pore accessibility, stability of the organic functions and reusability. Knowledge of these aspects is critical in the design of adsorption-desorption protocols. In this work we produce and characterize propylamino-substituted large pore silica (SBA-15-N), which is submitted to Cu(II) adsorption from copper sulfate solutions, followed by desorption in acid media and material regeneration. We find that the hybrid material is an efficient adsorbent (1.15-1.75mmolCu(II)g -1), although a fraction of the organic groups is lost during the adsorption process. An X-ray photoelectron spectroscopy (XPS) study demonstrates that the contents of amino groups are higher in the material surface, leading to different behaviors in Cu(II) complexation along the material. These materials can be regenerated by exposure to acidic media. Thermal processing of the hybrid materials leads to better durability in aqueous solutions during reprocessing, due to enhanced polycondensation of the inorganic framework. Thermally treated samples, once regenerated, are efficient adsorbents in a second step of Cu(II) adsorption. We discuss the materials processing factors involved in the improved adsorption of Cu(II), its quantitative release and reusability of the material. © 2012 Elsevier B.V. Fil:Videla, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043894_v223-224_n_p53_Lombardo http://hdl.handle.net/20.500.12110/paper_03043894_v223-224_n_p53_Lombardo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Aminopropyl function Hybrid adsorbents Ion scavenging Mesoporous materials Reusable adsorbent Sol-gel Water treatment Acid media Acidic media Adsorption desorption Adsorption efficiency Adsorption process Amino group Aminopropyl Copper sulfate Cu adsorption Functionalizations High surface area Hybrid adsorbents Large pores Material surface Materials processing Mesoporous Silica Organic function Organic group Sulfate solutions X-ray photoelectron spectroscopy studies Adsorbents Adsorption Desorption Hybrid materials Materials properties Metal ions Photoelectrons Polycondensation Reusability Silica Sol-gels Water treatment X ray photoelectron spectroscopy Mesoporous materials copper sulfate sba 15 n silicon dioxide unclassified drug adsorption cation complexation copper compound desorption recycling scavenging (chemistry) silica sulfate wastewater water treatment X-ray spectroscopy adsorption article complex formation molecular stability polymerization porosity substitution reaction synthesis X ray photoelectron spectroscopy Adsorption Copper Sulfate Microscopy, Electron, Scanning Photoelectron Spectroscopy Porosity Propylamines Recycling Silicon Dioxide Spectroscopy, Fourier Transform Infrared Surface Properties Water Pollutants, Chemical Water Purification
spellingShingle	Aminopropyl function Hybrid adsorbents Ion scavenging Mesoporous materials Reusable adsorbent Sol-gel Water treatment Acid media Acidic media Adsorption desorption Adsorption efficiency Adsorption process Amino group Aminopropyl Copper sulfate Cu adsorption Functionalizations High surface area Hybrid adsorbents Large pores Material surface Materials processing Mesoporous Silica Organic function Organic group Sulfate solutions X-ray photoelectron spectroscopy studies Adsorbents Adsorption Desorption Hybrid materials Materials properties Metal ions Photoelectrons Polycondensation Reusability Silica Sol-gels Water treatment X ray photoelectron spectroscopy Mesoporous materials copper sulfate sba 15 n silicon dioxide unclassified drug adsorption cation complexation copper compound desorption recycling scavenging (chemistry) silica sulfate wastewater water treatment X-ray spectroscopy adsorption article complex formation molecular stability polymerization porosity substitution reaction synthesis X ray photoelectron spectroscopy Adsorption Copper Sulfate Microscopy, Electron, Scanning Photoelectron Spectroscopy Porosity Propylamines Recycling Silicon Dioxide Spectroscopy, Fourier Transform Infrared Surface Properties Water Pollutants, Chemical Water Purification Videla, Mariela Soler Illia, Galo Juan de Avila Arturo Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
topic_facet	Aminopropyl function Hybrid adsorbents Ion scavenging Mesoporous materials Reusable adsorbent Sol-gel Water treatment Acid media Acidic media Adsorption desorption Adsorption efficiency Adsorption process Amino group Aminopropyl Copper sulfate Cu adsorption Functionalizations High surface area Hybrid adsorbents Large pores Material surface Materials processing Mesoporous Silica Organic function Organic group Sulfate solutions X-ray photoelectron spectroscopy studies Adsorbents Adsorption Desorption Hybrid materials Materials properties Metal ions Photoelectrons Polycondensation Reusability Silica Sol-gels Water treatment X ray photoelectron spectroscopy Mesoporous materials copper sulfate sba 15 n silicon dioxide unclassified drug adsorption cation complexation copper compound desorption recycling scavenging (chemistry) silica sulfate wastewater water treatment X-ray spectroscopy adsorption article complex formation molecular stability polymerization porosity substitution reaction synthesis X ray photoelectron spectroscopy Adsorption Copper Sulfate Microscopy, Electron, Scanning Photoelectron Spectroscopy Porosity Propylamines Recycling Silicon Dioxide Spectroscopy, Fourier Transform Infrared Surface Properties Water Pollutants, Chemical Water Purification
description	Hybrid mesoporous materials are potentially useful for metal ion scavenging and retrieval because of their high surface areas, controlled accessibility and tailored functionalization. Some aspects that are linked to the performance of HMM include pore accessibility, stability of the organic functions and reusability. Knowledge of these aspects is critical in the design of adsorption-desorption protocols. In this work we produce and characterize propylamino-substituted large pore silica (SBA-15-N), which is submitted to Cu(II) adsorption from copper sulfate solutions, followed by desorption in acid media and material regeneration. We find that the hybrid material is an efficient adsorbent (1.15-1.75mmolCu(II)g -1), although a fraction of the organic groups is lost during the adsorption process. An X-ray photoelectron spectroscopy (XPS) study demonstrates that the contents of amino groups are higher in the material surface, leading to different behaviors in Cu(II) complexation along the material. These materials can be regenerated by exposure to acidic media. Thermal processing of the hybrid materials leads to better durability in aqueous solutions during reprocessing, due to enhanced polycondensation of the inorganic framework. Thermally treated samples, once regenerated, are efficient adsorbents in a second step of Cu(II) adsorption. We discuss the materials processing factors involved in the improved adsorption of Cu(II), its quantitative release and reusability of the material. © 2012 Elsevier B.V.
author	Videla, Mariela Soler Illia, Galo Juan de Avila Arturo
author_facet	Videla, Mariela Soler Illia, Galo Juan de Avila Arturo
author_sort	Videla, Mariela
title	Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
title_short	Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
title_full	Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
title_fullStr	Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
title_full_unstemmed	Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects
title_sort	aminopropyl-modified mesoporous silica sba-15 as recovery agents of cu(ii)-sulfate solutions: adsorption efficiency, functional stability and reusability aspects
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03043894_v223-224_n_p53_Lombardo http://hdl.handle.net/20.500.12110/paper_03043894_v223-224_n_p53_Lombardo
work_keys_str_mv	AT videlamariela aminopropylmodifiedmesoporoussilicasba15asrecoveryagentsofcuiisulfatesolutionsadsorptionefficiencyfunctionalstabilityandreusabilityaspects AT solerilliagalojuandeavilaarturo aminopropylmodifiedmesoporoussilicasba15asrecoveryagentsofcuiisulfatesolutionsadsorptionefficiencyfunctionalstabilityandreusabilityaspects
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Aminopropyl-modified mesoporous silica SBA-15 as recovery agents of Cu(II)-sulfate solutions: Adsorption efficiency, functional stability and reusability aspects

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