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Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent

Silica nanoparticles (SiO(2) NPs) are one of the most well-studied inorganic nanoparticles for many applications. They offer the advantages of tunable size, biocompatibility, porous structure, and larger surface area. Thus, in this study, a high yield of SiO(2) NPs was produced via the chemical trea...

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Autores principales: Alhadhrami, A., Mohamed, Gehad G., Sadek, Ahmed H., Ismail, Sameh H., Ebnalwaled, A. A., Almalki, Abdulraheem S. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693224/
https://www.ncbi.nlm.nih.gov/pubmed/36431696
http://dx.doi.org/10.3390/ma15228211
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author Alhadhrami, A.
Mohamed, Gehad G.
Sadek, Ahmed H.
Ismail, Sameh H.
Ebnalwaled, A. A.
Almalki, Abdulraheem S. A.
author_facet Alhadhrami, A.
Mohamed, Gehad G.
Sadek, Ahmed H.
Ismail, Sameh H.
Ebnalwaled, A. A.
Almalki, Abdulraheem S. A.
author_sort Alhadhrami, A.
collection PubMed
description Silica nanoparticles (SiO(2) NPs) are one of the most well-studied inorganic nanoparticles for many applications. They offer the advantages of tunable size, biocompatibility, porous structure, and larger surface area. Thus, in this study, a high yield of SiO(2) NPs was produced via the chemical treatment of rice husk ash by the sol–gel method. Characteristics of the prepared SiO(2) NPs were validated using different characterization techniques. Accordingly, the phase, chemical composition, morphological, and spectroscopic properties of the prepared sample were studied. The average particle size of the SiO(2) NPs was found to be approximately 60–80 nm and the surface area was 78.52 m²/g. The prepared SiO(2) NPs were examined as photocatalysts for the degradation of methyl orange (MO) dye under UV irradiation. It was found that the intensity of the characteristic absorption band of MO decreased gradually with exposure time increasing, which means the successful photodegradation of MO by SiO(2) NPs. Moreover, the antibacterial activity of obtained SiO(2) NPs was investigated by counting the coliform bacteria in the surface water using the most probable number (MPN) index method. The results revealed that the MPN of coliform bacteria untreated and treated by SiO(2) NPs was estimated to be 170 CFU/100 mL and 10 CFU/100 mL, respectively, resulting in bacterial growth inhibition of 94.12%.
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spelling pubmed-96932242022-11-26 Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent Alhadhrami, A. Mohamed, Gehad G. Sadek, Ahmed H. Ismail, Sameh H. Ebnalwaled, A. A. Almalki, Abdulraheem S. A. Materials (Basel) Article Silica nanoparticles (SiO(2) NPs) are one of the most well-studied inorganic nanoparticles for many applications. They offer the advantages of tunable size, biocompatibility, porous structure, and larger surface area. Thus, in this study, a high yield of SiO(2) NPs was produced via the chemical treatment of rice husk ash by the sol–gel method. Characteristics of the prepared SiO(2) NPs were validated using different characterization techniques. Accordingly, the phase, chemical composition, morphological, and spectroscopic properties of the prepared sample were studied. The average particle size of the SiO(2) NPs was found to be approximately 60–80 nm and the surface area was 78.52 m²/g. The prepared SiO(2) NPs were examined as photocatalysts for the degradation of methyl orange (MO) dye under UV irradiation. It was found that the intensity of the characteristic absorption band of MO decreased gradually with exposure time increasing, which means the successful photodegradation of MO by SiO(2) NPs. Moreover, the antibacterial activity of obtained SiO(2) NPs was investigated by counting the coliform bacteria in the surface water using the most probable number (MPN) index method. The results revealed that the MPN of coliform bacteria untreated and treated by SiO(2) NPs was estimated to be 170 CFU/100 mL and 10 CFU/100 mL, respectively, resulting in bacterial growth inhibition of 94.12%. MDPI 2022-11-18 /pmc/articles/PMC9693224/ /pubmed/36431696 http://dx.doi.org/10.3390/ma15228211 Text en © 2022 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
Alhadhrami, A.
Mohamed, Gehad G.
Sadek, Ahmed H.
Ismail, Sameh H.
Ebnalwaled, A. A.
Almalki, Abdulraheem S. A.
Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title_full Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title_fullStr Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title_full_unstemmed Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title_short Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent
title_sort behavior of silica nanoparticles synthesized from rice husk ash by the sol–gel method as a photocatalytic and antibacterial agent
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693224/
https://www.ncbi.nlm.nih.gov/pubmed/36431696
http://dx.doi.org/10.3390/ma15228211
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