An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation

The molybdenum oxide (MoO(3)) and MoO(3)@SiO(2) nanoparticles were successfully prepared using the chemical bath deposition (CBD) method. The photocatalytic activities of molybdenum oxide (MoO(3)), SiO(2), and MoO(3)@SiO(2) nanoparticles composite have shown a synergistic photocatalytic effect of Si...

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Autores principales: Kamoun, Olfa, Gassoumi, Abdelaziz, Kouass, Salah, Alhalaili, Badriyah, Vidu, Ruxandra, Turki-Kamoun, Najoua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761561/
https://www.ncbi.nlm.nih.gov/pubmed/33276515
http://dx.doi.org/10.3390/nano10122409
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author Kamoun, Olfa
Gassoumi, Abdelaziz
Kouass, Salah
Alhalaili, Badriyah
Vidu, Ruxandra
Turki-Kamoun, Najoua
author_facet Kamoun, Olfa
Gassoumi, Abdelaziz
Kouass, Salah
Alhalaili, Badriyah
Vidu, Ruxandra
Turki-Kamoun, Najoua
author_sort Kamoun, Olfa
collection PubMed
description The molybdenum oxide (MoO(3)) and MoO(3)@SiO(2) nanoparticles were successfully prepared using the chemical bath deposition (CBD) method. The photocatalytic activities of molybdenum oxide (MoO(3)), SiO(2), and MoO(3)@SiO(2) nanoparticles composite have shown a synergistic photocatalytic effect of SiO(2) combined with MoO(3). The first-order degradation rate constants for MoO(3), SiO(2), and MoO(3)@SiO(2) nanocomposite were 10.3 × 10(−3) min(−1), 15.1 × 10(−3) min(−1), and 16.3 × 10(−3) min(−1), respectively. The MoO(3)@SiO(2) composite showed degradation efficiencies in the methylene blue solution close to 100% after 60 min of UV irradiation. The X-ray diffraction (XRD) showed that the MoO(3) powder has a hexagonal crystal structure and the silica is the tridymite type of SiO(2). The crystallite size was about 94 nm, 32 nm, and 125 nm for MoO(3), silica, and MoO(3)@SiO(2), respectively, as calculated by the Scherrer equation. The scanning electron microscopy (SEM) images revealed that the MoO(3) powder consisted of a uniform hexagonal structure; the silica showed a rod-like micro-flake morphology and the MoO(3)@SiO(2) composite had the appearance of coral-like structures.
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spelling pubmed-77615612020-12-26 An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation Kamoun, Olfa Gassoumi, Abdelaziz Kouass, Salah Alhalaili, Badriyah Vidu, Ruxandra Turki-Kamoun, Najoua Nanomaterials (Basel) Article The molybdenum oxide (MoO(3)) and MoO(3)@SiO(2) nanoparticles were successfully prepared using the chemical bath deposition (CBD) method. The photocatalytic activities of molybdenum oxide (MoO(3)), SiO(2), and MoO(3)@SiO(2) nanoparticles composite have shown a synergistic photocatalytic effect of SiO(2) combined with MoO(3). The first-order degradation rate constants for MoO(3), SiO(2), and MoO(3)@SiO(2) nanocomposite were 10.3 × 10(−3) min(−1), 15.1 × 10(−3) min(−1), and 16.3 × 10(−3) min(−1), respectively. The MoO(3)@SiO(2) composite showed degradation efficiencies in the methylene blue solution close to 100% after 60 min of UV irradiation. The X-ray diffraction (XRD) showed that the MoO(3) powder has a hexagonal crystal structure and the silica is the tridymite type of SiO(2). The crystallite size was about 94 nm, 32 nm, and 125 nm for MoO(3), silica, and MoO(3)@SiO(2), respectively, as calculated by the Scherrer equation. The scanning electron microscopy (SEM) images revealed that the MoO(3) powder consisted of a uniform hexagonal structure; the silica showed a rod-like micro-flake morphology and the MoO(3)@SiO(2) composite had the appearance of coral-like structures. MDPI 2020-12-02 /pmc/articles/PMC7761561/ /pubmed/33276515 http://dx.doi.org/10.3390/nano10122409 Text en © 2020 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
Kamoun, Olfa
Gassoumi, Abdelaziz
Kouass, Salah
Alhalaili, Badriyah
Vidu, Ruxandra
Turki-Kamoun, Najoua
An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title_full An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title_fullStr An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title_full_unstemmed An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title_short An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation
title_sort investigation on the synthesis of molybdenum oxide and its silica nanoparticle composites for dye degradation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761561/
https://www.ncbi.nlm.nih.gov/pubmed/33276515
http://dx.doi.org/10.3390/nano10122409
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