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Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity

For this study, the synthesis of TiO(2) nanomaterials was performed via a novel sol-gel method employing titanium butoxide as a metal precursor, Pluronic F127 as a templating agent, toluene as a swelling agent, and acidic water or ethanol as the reaction solvents. The method was designed by tailorin...

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Autores principales: Calabrese, Carla, Maertens, Amélie, Piras, Alessandra, Aprile, Carmela, Liotta, Leonarda Francesca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343489/
https://www.ncbi.nlm.nih.gov/pubmed/37446444
http://dx.doi.org/10.3390/nano13131928
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author Calabrese, Carla
Maertens, Amélie
Piras, Alessandra
Aprile, Carmela
Liotta, Leonarda Francesca
author_facet Calabrese, Carla
Maertens, Amélie
Piras, Alessandra
Aprile, Carmela
Liotta, Leonarda Francesca
author_sort Calabrese, Carla
collection PubMed
description For this study, the synthesis of TiO(2) nanomaterials was performed via a novel sol-gel method employing titanium butoxide as a metal precursor, Pluronic F127 as a templating agent, toluene as a swelling agent, and acidic water or ethanol as the reaction solvents. The method was designed by tailoring certain reaction parameters, such as the sequence of toluene addition, magnetic stirring, the type of reaction solvent, and the calcination conditions. Analysis of the specific surface area and porosity was carried out via N(2) physisorption, whereas the morphological features of the solids were investigated via transmission electron microscopy. The crystalline structure of both the dried powders and the calcined materials was evaluated using X-ray diffraction analysis. It transpired that the different phase compositions of the solids are related to the specific synthesis medium employed. Under the adopted reaction conditions, ethanol, which was used as a reaction solvent, promoted the local arrangement of dispersed anatase particles, the specific arrangement of which does not lead to rutile transformation. Conversely, the use of water alone supported high-particle packing, evolving into a rutile phase. The photodegradation of Rhodamine B was used as a target reaction for testing the photocatalytic activity of the selected samples.
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spelling pubmed-103434892023-07-14 Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity Calabrese, Carla Maertens, Amélie Piras, Alessandra Aprile, Carmela Liotta, Leonarda Francesca Nanomaterials (Basel) Article For this study, the synthesis of TiO(2) nanomaterials was performed via a novel sol-gel method employing titanium butoxide as a metal precursor, Pluronic F127 as a templating agent, toluene as a swelling agent, and acidic water or ethanol as the reaction solvents. The method was designed by tailoring certain reaction parameters, such as the sequence of toluene addition, magnetic stirring, the type of reaction solvent, and the calcination conditions. Analysis of the specific surface area and porosity was carried out via N(2) physisorption, whereas the morphological features of the solids were investigated via transmission electron microscopy. The crystalline structure of both the dried powders and the calcined materials was evaluated using X-ray diffraction analysis. It transpired that the different phase compositions of the solids are related to the specific synthesis medium employed. Under the adopted reaction conditions, ethanol, which was used as a reaction solvent, promoted the local arrangement of dispersed anatase particles, the specific arrangement of which does not lead to rutile transformation. Conversely, the use of water alone supported high-particle packing, evolving into a rutile phase. The photodegradation of Rhodamine B was used as a target reaction for testing the photocatalytic activity of the selected samples. MDPI 2023-06-25 /pmc/articles/PMC10343489/ /pubmed/37446444 http://dx.doi.org/10.3390/nano13131928 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Calabrese, Carla
Maertens, Amélie
Piras, Alessandra
Aprile, Carmela
Liotta, Leonarda Francesca
Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title_full Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title_fullStr Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title_full_unstemmed Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title_short Novel Sol-Gel Synthesis of TiO(2) Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity
title_sort novel sol-gel synthesis of tio(2) spherical porous nanoparticles assemblies with photocatalytic activity
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343489/
https://www.ncbi.nlm.nih.gov/pubmed/37446444
http://dx.doi.org/10.3390/nano13131928
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