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Porous silicon functionalization for possible arsenic adsorption
Thiol-functionalized porous silicon (PS) monolayer was evaluated for its possible application in As (III) adsorption. Dimercaptosuccinic acid (DMSA) attached to mesoporous silicon via amide bond linkages was used as a chelate for As (III). Two different aminosilanes namely 3-(aminopropyl) triethoxys...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4171714/ https://www.ncbi.nlm.nih.gov/pubmed/25249826 http://dx.doi.org/10.1186/1556-276X-9-508 |
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author | Balderas-Valadez, Ruth Fabiola Agarwal, Vivechana |
author_facet | Balderas-Valadez, Ruth Fabiola Agarwal, Vivechana |
author_sort | Balderas-Valadez, Ruth Fabiola |
collection | PubMed |
description | Thiol-functionalized porous silicon (PS) monolayer was evaluated for its possible application in As (III) adsorption. Dimercaptosuccinic acid (DMSA) attached to mesoporous silicon via amide bond linkages was used as a chelate for As (III). Two different aminosilanes namely 3-(aminopropyl) triethoxysilane (APTES) and 3-aminopropyl (diethoxy)-methylsilane (APDEMS) were tested as linkers to evaluate the relative response for DMSA attachment. The aminosilane-modified PS samples were attached to DMSA by wet impregnation followed by the adsorption of As (III). Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) have been used to identify the functional groups and to estimate the As (III) content, respectively. FTIR spectroscopy confirmed the covalent bonding of DMSA with amide and R-COOH groups on the nanostructured porous surface. XPS confirms the preferred arsenic adsorption on the surface of PS/DMSA samples as compared to the aminosilane-modified and bare PS substrates. |
format | Online Article Text |
id | pubmed-4171714 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-41717142014-09-23 Porous silicon functionalization for possible arsenic adsorption Balderas-Valadez, Ruth Fabiola Agarwal, Vivechana Nanoscale Res Lett Nano Express Thiol-functionalized porous silicon (PS) monolayer was evaluated for its possible application in As (III) adsorption. Dimercaptosuccinic acid (DMSA) attached to mesoporous silicon via amide bond linkages was used as a chelate for As (III). Two different aminosilanes namely 3-(aminopropyl) triethoxysilane (APTES) and 3-aminopropyl (diethoxy)-methylsilane (APDEMS) were tested as linkers to evaluate the relative response for DMSA attachment. The aminosilane-modified PS samples were attached to DMSA by wet impregnation followed by the adsorption of As (III). Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) have been used to identify the functional groups and to estimate the As (III) content, respectively. FTIR spectroscopy confirmed the covalent bonding of DMSA with amide and R-COOH groups on the nanostructured porous surface. XPS confirms the preferred arsenic adsorption on the surface of PS/DMSA samples as compared to the aminosilane-modified and bare PS substrates. Springer 2014-09-17 /pmc/articles/PMC4171714/ /pubmed/25249826 http://dx.doi.org/10.1186/1556-276X-9-508 Text en Copyright © 2014 Balderas-Valadez and Agarwal; licensee Springer. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
spellingShingle | Nano Express Balderas-Valadez, Ruth Fabiola Agarwal, Vivechana Porous silicon functionalization for possible arsenic adsorption |
title | Porous silicon functionalization for possible arsenic adsorption |
title_full | Porous silicon functionalization for possible arsenic adsorption |
title_fullStr | Porous silicon functionalization for possible arsenic adsorption |
title_full_unstemmed | Porous silicon functionalization for possible arsenic adsorption |
title_short | Porous silicon functionalization for possible arsenic adsorption |
title_sort | porous silicon functionalization for possible arsenic adsorption |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4171714/ https://www.ncbi.nlm.nih.gov/pubmed/25249826 http://dx.doi.org/10.1186/1556-276X-9-508 |
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