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In-Situ XPS Monitoring and Characterization of Electrochemically Prepared Au Nanoparticles in an Ionic Liquid
[Image: see text] Gold nanoparticles (Au NPs) have been electrochemically prepared in situ and in vacuo using two different electrochemical device configurations, containing an ionic liquid (IL), N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide, that serves both as...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5331456/ https://www.ncbi.nlm.nih.gov/pubmed/28261688 http://dx.doi.org/10.1021/acsomega.6b00456 |
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author | Camci, Merve T. Ulgut, Burak Kocabas, Coskun Suzer, Sefik |
author_facet | Camci, Merve T. Ulgut, Burak Kocabas, Coskun Suzer, Sefik |
author_sort | Camci, Merve T. |
collection | PubMed |
description | [Image: see text] Gold nanoparticles (Au NPs) have been electrochemically prepared in situ and in vacuo using two different electrochemical device configurations, containing an ionic liquid (IL), N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide, that serves both as reaction and as stabilizing media for the NPs. It was observed in both devices that Au NPs were created using an anodically triggered route. The created Au NPs are relatively small (3–7 nm) and reside within the IL medium. X-ray photoelectron spectroscopy is utilized to follow not only the formation of the NPs but also their charging/discharging properties, by monitoring the charging shifts of the Au4f peak representing the electrodes and also the Au NPs as well as the F1s peak of the IL after polarizing one of the electrodes. Accordingly, DC polarization across the electrodes leads to a uniform binding energy shift of F1s of the IL along with that of Au4f of the NPs within. Moreover, this shift corresponds to only half of the applied potential. AC polarization brings out another dimension for demonstrating further the harmony between the charging/discharging property of the IL medium and the Au NPs in temporally and laterally resolved fashions. Polarization of the electrodes result in perfect spectral separation of the Au4f peaks of the NPs from those of the metal in both static (DC) and in time- and position-dependent (AC) modes. |
format | Online Article Text |
id | pubmed-5331456 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-53314562017-03-02 In-Situ XPS Monitoring and Characterization of Electrochemically Prepared Au Nanoparticles in an Ionic Liquid Camci, Merve T. Ulgut, Burak Kocabas, Coskun Suzer, Sefik ACS Omega [Image: see text] Gold nanoparticles (Au NPs) have been electrochemically prepared in situ and in vacuo using two different electrochemical device configurations, containing an ionic liquid (IL), N-N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide, that serves both as reaction and as stabilizing media for the NPs. It was observed in both devices that Au NPs were created using an anodically triggered route. The created Au NPs are relatively small (3–7 nm) and reside within the IL medium. X-ray photoelectron spectroscopy is utilized to follow not only the formation of the NPs but also their charging/discharging properties, by monitoring the charging shifts of the Au4f peak representing the electrodes and also the Au NPs as well as the F1s peak of the IL after polarizing one of the electrodes. Accordingly, DC polarization across the electrodes leads to a uniform binding energy shift of F1s of the IL along with that of Au4f of the NPs within. Moreover, this shift corresponds to only half of the applied potential. AC polarization brings out another dimension for demonstrating further the harmony between the charging/discharging property of the IL medium and the Au NPs in temporally and laterally resolved fashions. Polarization of the electrodes result in perfect spectral separation of the Au4f peaks of the NPs from those of the metal in both static (DC) and in time- and position-dependent (AC) modes. American Chemical Society 2017-02-10 /pmc/articles/PMC5331456/ /pubmed/28261688 http://dx.doi.org/10.1021/acsomega.6b00456 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Camci, Merve T. Ulgut, Burak Kocabas, Coskun Suzer, Sefik In-Situ XPS Monitoring and Characterization of Electrochemically Prepared Au Nanoparticles in an Ionic Liquid |
title | In-Situ XPS Monitoring and Characterization of Electrochemically
Prepared Au Nanoparticles in an Ionic Liquid |
title_full | In-Situ XPS Monitoring and Characterization of Electrochemically
Prepared Au Nanoparticles in an Ionic Liquid |
title_fullStr | In-Situ XPS Monitoring and Characterization of Electrochemically
Prepared Au Nanoparticles in an Ionic Liquid |
title_full_unstemmed | In-Situ XPS Monitoring and Characterization of Electrochemically
Prepared Au Nanoparticles in an Ionic Liquid |
title_short | In-Situ XPS Monitoring and Characterization of Electrochemically
Prepared Au Nanoparticles in an Ionic Liquid |
title_sort | in-situ xps monitoring and characterization of electrochemically
prepared au nanoparticles in an ionic liquid |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5331456/ https://www.ncbi.nlm.nih.gov/pubmed/28261688 http://dx.doi.org/10.1021/acsomega.6b00456 |
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