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In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation
Acoustic levitation is a distinctive and versatile tool for levitating and processing free-standing single droplets and particles. Liquid droplets suspended in an acoustic standing wave provide container-free environments for understanding chemical reactions by avoiding boundary effects and solid su...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9988397/ https://www.ncbi.nlm.nih.gov/pubmed/36871525 http://dx.doi.org/10.1016/j.ultsonch.2023.106345 |
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author | Park, Juhyeon Min, Ahreum Theerthagiri, Jayaraman Ashokkumar, Muthupandian Choi, Myong Yong |
author_facet | Park, Juhyeon Min, Ahreum Theerthagiri, Jayaraman Ashokkumar, Muthupandian Choi, Myong Yong |
author_sort | Park, Juhyeon |
collection | PubMed |
description | Acoustic levitation is a distinctive and versatile tool for levitating and processing free-standing single droplets and particles. Liquid droplets suspended in an acoustic standing wave provide container-free environments for understanding chemical reactions by avoiding boundary effects and solid surfaces. We attempted to use this strategy for the production of well-dispersed uniform catalytic nanomaterials in an ultraclean confined area without the addition of external reducing agents or surfactants. In this study, we report on the synthesis of gold and silver nanoparticles (NPs) via acoustic levitation coupled with pulsed laser irradiation (PLI). In situ UV–Visible and Raman spectroscopic techniques were performed to monitor the formation and growth of gold and silver NPs. The PLI was used for the photoreduction of targeted metal ions present in the levitated droplets to generate metal NPs. Additionally, the cavitation effect and bubble movement accelerate the nucleation and decrease the size of NPs. The synthesized Au NPs with ∼ 5 nm size showed excellent catalytic behavior towards the conversion of 4-nitrophenol to 4-aminophenol. This study may open a new door for synthesizing various functional nanocatalysts and for achieving new chemical reactions in suspended droplets. |
format | Online Article Text |
id | pubmed-9988397 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-99883972023-03-07 In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation Park, Juhyeon Min, Ahreum Theerthagiri, Jayaraman Ashokkumar, Muthupandian Choi, Myong Yong Ultrason Sonochem Original Research Article Acoustic levitation is a distinctive and versatile tool for levitating and processing free-standing single droplets and particles. Liquid droplets suspended in an acoustic standing wave provide container-free environments for understanding chemical reactions by avoiding boundary effects and solid surfaces. We attempted to use this strategy for the production of well-dispersed uniform catalytic nanomaterials in an ultraclean confined area without the addition of external reducing agents or surfactants. In this study, we report on the synthesis of gold and silver nanoparticles (NPs) via acoustic levitation coupled with pulsed laser irradiation (PLI). In situ UV–Visible and Raman spectroscopic techniques were performed to monitor the formation and growth of gold and silver NPs. The PLI was used for the photoreduction of targeted metal ions present in the levitated droplets to generate metal NPs. Additionally, the cavitation effect and bubble movement accelerate the nucleation and decrease the size of NPs. The synthesized Au NPs with ∼ 5 nm size showed excellent catalytic behavior towards the conversion of 4-nitrophenol to 4-aminophenol. This study may open a new door for synthesizing various functional nanocatalysts and for achieving new chemical reactions in suspended droplets. Elsevier 2023-02-26 /pmc/articles/PMC9988397/ /pubmed/36871525 http://dx.doi.org/10.1016/j.ultsonch.2023.106345 Text en © 2023 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Research Article Park, Juhyeon Min, Ahreum Theerthagiri, Jayaraman Ashokkumar, Muthupandian Choi, Myong Yong In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title | In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title_full | In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title_fullStr | In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title_full_unstemmed | In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title_short | In situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
title_sort | in situ studies on free-standing synthesis of nanocatalysts via acoustic levitation coupled with pulsed laser irradiation |
topic | Original Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9988397/ https://www.ncbi.nlm.nih.gov/pubmed/36871525 http://dx.doi.org/10.1016/j.ultsonch.2023.106345 |
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