Cargando…
Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged
Halloysite is an aluminosilicate clay with a predominantly hollow tubular structure (HNTs) able to act as a nanocontainer for the encapsulation of several chemicals. However, HNTs possess low affinity for metal ions in their pristine form and they need to be modified for improving their adsorption c...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7922904/ https://www.ncbi.nlm.nih.gov/pubmed/33671328 http://dx.doi.org/10.3390/nano11020506 |
_version_ | 1783658793443262464 |
---|---|
author | Massaro, Marina Viseras Iborra, Cesar Cavallaro, Giuseppe Colletti, Carmelo Giuseppe García-Villén, Fátima Lazzara, Giuseppe Riela, Serena |
author_facet | Massaro, Marina Viseras Iborra, Cesar Cavallaro, Giuseppe Colletti, Carmelo Giuseppe García-Villén, Fátima Lazzara, Giuseppe Riela, Serena |
author_sort | Massaro, Marina |
collection | PubMed |
description | Halloysite is an aluminosilicate clay with a predominantly hollow tubular structure (HNTs) able to act as a nanocontainer for the encapsulation of several chemicals. However, HNTs possess low affinity for metal ions in their pristine form and they need to be modified for improving their adsorption capabilities. Therefore, to overcome this issue herein we report a straightforward approach for the covalent modification of the external surface of halloysite nanotubes with hectorite clay. Compared to halloysite, hectorite possesses a lamellar structure with higher cation exchange capacity. The covalent linkage between the two clays was verified by several techniques (FTIR spectroscopy, (13)C CP-MAS NMR, TGA, ζ−potential, DLS, and XRD measurements) and the morphology was imaged by TEM investigations. As proof of concept the adsorption ability of the obtained nanomaterial in comparison to pristine clays was proved using ciprofloxacin and silver ions chosen as models for their different chemical characteristics. |
format | Online Article Text |
id | pubmed-7922904 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79229042021-03-03 Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged Massaro, Marina Viseras Iborra, Cesar Cavallaro, Giuseppe Colletti, Carmelo Giuseppe García-Villén, Fátima Lazzara, Giuseppe Riela, Serena Nanomaterials (Basel) Article Halloysite is an aluminosilicate clay with a predominantly hollow tubular structure (HNTs) able to act as a nanocontainer for the encapsulation of several chemicals. However, HNTs possess low affinity for metal ions in their pristine form and they need to be modified for improving their adsorption capabilities. Therefore, to overcome this issue herein we report a straightforward approach for the covalent modification of the external surface of halloysite nanotubes with hectorite clay. Compared to halloysite, hectorite possesses a lamellar structure with higher cation exchange capacity. The covalent linkage between the two clays was verified by several techniques (FTIR spectroscopy, (13)C CP-MAS NMR, TGA, ζ−potential, DLS, and XRD measurements) and the morphology was imaged by TEM investigations. As proof of concept the adsorption ability of the obtained nanomaterial in comparison to pristine clays was proved using ciprofloxacin and silver ions chosen as models for their different chemical characteristics. MDPI 2021-02-17 /pmc/articles/PMC7922904/ /pubmed/33671328 http://dx.doi.org/10.3390/nano11020506 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Massaro, Marina Viseras Iborra, Cesar Cavallaro, Giuseppe Colletti, Carmelo Giuseppe García-Villén, Fátima Lazzara, Giuseppe Riela, Serena Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title | Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title_full | Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title_fullStr | Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title_full_unstemmed | Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title_short | Synthesis and Characterization of Nanomaterial Based on Halloysite and Hectorite Clay Minerals Covalently Bridged |
title_sort | synthesis and characterization of nanomaterial based on halloysite and hectorite clay minerals covalently bridged |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7922904/ https://www.ncbi.nlm.nih.gov/pubmed/33671328 http://dx.doi.org/10.3390/nano11020506 |
work_keys_str_mv | AT massaromarina synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT viserasiborracesar synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT cavallarogiuseppe synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT colletticarmelogiuseppe synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT garciavillenfatima synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT lazzaragiuseppe synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged AT rielaserena synthesisandcharacterizationofnanomaterialbasedonhalloysiteandhectoriteclaymineralscovalentlybridged |