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Artículo

Ga-SBA-3 A novel nanostructured material: Synthesis, characterization and application

Martínez, María Laura; Gómez Costa, Marcos BrunoIcon ; Anunziata, Oscar AlfredoIcon
Fecha de publicación: 02/2019
Editorial: IOP Publishing
Revista: Nanotechnology
ISSN: 0957-4484
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Nano-materiales

Resumen

This paper reports for the first time the incorporation of gallium into the structure of the mesoporous SBA-3 material in order to modify the intrinsic acidity of the material. The study indicates the effective incorporation of Ga into a network in tetrahedral form, with most in the interior of the lodging and a low proportion on the external surface. Gallium was introduced via post-synthesis using Ga-nitrate in appropriate conditions. The nanostructured material was characterized by ICP, x-ray diffraction, nuclear magnetic resonance-MAS, x-ray photoelectron spectra, FTIR, SEM, transmission electron microscopy and UV-vis. Pyridine was used as a probe molecule for the determination of its acidity following the amount and type of acidic sites by FTIR. In addition, aniline adsorption/desorption studies and subsequent in situ polymerization, polyaniline (PANI)/Ga-SBA-3, were carried out with the aim of producing a nanocomposite with conductive properties. The original material had good structural regularity and acidity of Brnsted and Lewis; the PANI/Ga-SBA-3 composite also showed a conductivity of 2.5 10-3 S cm-1, higher than that of its homologs Al-SBA-3 and Al-MCM- 41.
Palabras clave: BRÖNSTED AND LEWIS ACIDITY , CONDUCTIVE NANOCOMPOSITE , GA IN TETRAHEDRAL FORM , GA-SBA-3 , PANI/GA-SBA-3 , POST-SYNTHESIS INCORPORATION
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/112931
DOI: https://doi.org/10.1088/1361-6528/aaf138
URL: https://iopscience.iop.org/article/10.1088/1361-6528/aaf138
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Martínez, María Laura; Gómez Costa, Marcos Bruno; Anunziata, Oscar Alfredo; Ga-SBA-3 A novel nanostructured material: Synthesis, characterization and application; IOP Publishing; Nanotechnology; 30; 6; 2-2019
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