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Title: | Novel Sol-Gel Synthesis of TiO2 Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity | Authors: | Calabrese, Carla Maertens, Amelie PIRAS, Alessandra Aprile, Carmela Liotta, Leonarda Francesca |
Issue Date: | 2023 | Publisher: | MDPI | Source: | NANOMATERIALS, 13 (13) (Art N° 1928) | Abstract: | For this study, the synthesis of TiO2 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. | Notes: | Liotta, LF (corresponding author), CNR, Inst Study Nanostruct Mat ISMN, Via Ugo Malfa 153, I-90146 Palermo, Italy. carla.calabrese@ismn.cnr.it; amelie.maertens@unamur.be; lessandra.piras@uhasselt.be; carmela.aprile@unamur.be; leonardafrancesca.liotta@cnr.it |
Keywords: | titanium;porous nanoparticles;sol-gel synthesis;anatase;rutile;photocatalysis | Document URI: | http://hdl.handle.net/1942/40651 | e-ISSN: | 2079-4991 | DOI: | 10.3390/nano13131928 | ISI #: | 001028101000001 | Rights: | 2023 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 (https:// creativecommons.org/licenses/by/ 4.0/). | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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Novel Sol-Gel Synthesis of TiO2 Spherical Porous Nanoparticles Assemblies with Photocatalytic Activity.pdf | Published version | 19.67 MB | Adobe PDF | View/Open |
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