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Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method

The modified thermal treatment method via alternate oxygen and nitrogen flow was successfully employed to synthesize very narrow and pure Ag nanoparticles. The structural and optical properties of the obtained metal nanoparticles at different calcination temperatures between 400 and 800 °C were stud...

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Autores principales: Gharibshahi, Leila, Saion, Elias, Gharibshahi, Elham, Shaari, Abdul Halim, Matori, Khamirul Amin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506951/
https://www.ncbi.nlm.nih.gov/pubmed/28772762
http://dx.doi.org/10.3390/ma10040402
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author Gharibshahi, Leila
Saion, Elias
Gharibshahi, Elham
Shaari, Abdul Halim
Matori, Khamirul Amin
author_facet Gharibshahi, Leila
Saion, Elias
Gharibshahi, Elham
Shaari, Abdul Halim
Matori, Khamirul Amin
author_sort Gharibshahi, Leila
collection PubMed
description The modified thermal treatment method via alternate oxygen and nitrogen flow was successfully employed to synthesize very narrow and pure Ag nanoparticles. The structural and optical properties of the obtained metal nanoparticles at different calcination temperatures between 400 and 800 °C were studied using various techniques. The FTIR and EDX confirmed the formation of Ag nanoparticles without a trace of impurities. The XRD spectra revealed that the amorphous sample at 30 °C had transformed into the cubic crystalline nanostructures at the calcination temperature of 400 °C and higher. The TEM images showed the formation of spherical Ag nanoparticles in which the average particle size decreased with increasing calcination temperature from 7.88 nm at 400 °C to 3.29 nm at 800 °C. The optical properties were determined by UV-vis absorption spectrophotometer, which showed an increase in the conduction band of Ag nanoparticles with increasing calcination temperature from 2.75 eV at 400 °C to 3.04 eV at 800 °C. This was due to less attraction between conduction electrons and metal ions as the particle size decreases in corresponding to fewer numbers of atoms that made up the metal nanoparticles.
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spelling pubmed-55069512017-07-28 Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method Gharibshahi, Leila Saion, Elias Gharibshahi, Elham Shaari, Abdul Halim Matori, Khamirul Amin Materials (Basel) Article The modified thermal treatment method via alternate oxygen and nitrogen flow was successfully employed to synthesize very narrow and pure Ag nanoparticles. The structural and optical properties of the obtained metal nanoparticles at different calcination temperatures between 400 and 800 °C were studied using various techniques. The FTIR and EDX confirmed the formation of Ag nanoparticles without a trace of impurities. The XRD spectra revealed that the amorphous sample at 30 °C had transformed into the cubic crystalline nanostructures at the calcination temperature of 400 °C and higher. The TEM images showed the formation of spherical Ag nanoparticles in which the average particle size decreased with increasing calcination temperature from 7.88 nm at 400 °C to 3.29 nm at 800 °C. The optical properties were determined by UV-vis absorption spectrophotometer, which showed an increase in the conduction band of Ag nanoparticles with increasing calcination temperature from 2.75 eV at 400 °C to 3.04 eV at 800 °C. This was due to less attraction between conduction electrons and metal ions as the particle size decreases in corresponding to fewer numbers of atoms that made up the metal nanoparticles. MDPI 2017-04-12 /pmc/articles/PMC5506951/ /pubmed/28772762 http://dx.doi.org/10.3390/ma10040402 Text en © 2017 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
Gharibshahi, Leila
Saion, Elias
Gharibshahi, Elham
Shaari, Abdul Halim
Matori, Khamirul Amin
Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title_full Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title_fullStr Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title_full_unstemmed Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title_short Structural and Optical Properties of Ag Nanoparticles Synthesized by Thermal Treatment Method
title_sort structural and optical properties of ag nanoparticles synthesized by thermal treatment method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506951/
https://www.ncbi.nlm.nih.gov/pubmed/28772762
http://dx.doi.org/10.3390/ma10040402
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