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Graphene-Enhanced Raman Spectroscopy Reveals the Controlled Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface
[Image: see text] Although graphene-enhanced Raman spectroscopy has been investigated for several years, there have been no studies that have applied it to real-time observations of chemical catalytic reactions. Here, we report that UV/ozone-treated oxidized graphene was used to both control and mon...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6645006/ https://www.ncbi.nlm.nih.gov/pubmed/31459216 http://dx.doi.org/10.1021/acsomega.8b01285 |
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author | Shin, Dongha Choi, Yong Seok Hong, Byung Hee |
author_facet | Shin, Dongha Choi, Yong Seok Hong, Byung Hee |
author_sort | Shin, Dongha |
collection | PubMed |
description | [Image: see text] Although graphene-enhanced Raman spectroscopy has been investigated for several years, there have been no studies that have applied it to real-time observations of chemical catalytic reactions. Here, we report that UV/ozone-treated oxidized graphene was used to both control and monitor the photoreduction of an adsorbed nitroaromatic dye compound. Graphene-enhanced Raman spectroscopy studies show that more oxidized graphene surface leads to faster photoreduction. This is due to the lowering of the Fermi level in the oxidized graphene, which is in agreement with the highest occupied molecular orbital level of the adsorbed dye molecule, leading to a rapid electron transfer from graphene to the dye. Our findings will be useful in understanding and exploiting the photocatalytic properties of oxidized graphene on adsorbed molecular species. |
format | Online Article Text |
id | pubmed-6645006 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66450062019-08-27 Graphene-Enhanced Raman Spectroscopy Reveals the Controlled Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface Shin, Dongha Choi, Yong Seok Hong, Byung Hee ACS Omega [Image: see text] Although graphene-enhanced Raman spectroscopy has been investigated for several years, there have been no studies that have applied it to real-time observations of chemical catalytic reactions. Here, we report that UV/ozone-treated oxidized graphene was used to both control and monitor the photoreduction of an adsorbed nitroaromatic dye compound. Graphene-enhanced Raman spectroscopy studies show that more oxidized graphene surface leads to faster photoreduction. This is due to the lowering of the Fermi level in the oxidized graphene, which is in agreement with the highest occupied molecular orbital level of the adsorbed dye molecule, leading to a rapid electron transfer from graphene to the dye. Our findings will be useful in understanding and exploiting the photocatalytic properties of oxidized graphene on adsorbed molecular species. American Chemical Society 2018-09-13 /pmc/articles/PMC6645006/ /pubmed/31459216 http://dx.doi.org/10.1021/acsomega.8b01285 Text en Copyright © 2018 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 | Shin, Dongha Choi, Yong Seok Hong, Byung Hee Graphene-Enhanced Raman Spectroscopy Reveals the Controlled Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title | Graphene-Enhanced Raman Spectroscopy Reveals the Controlled
Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title_full | Graphene-Enhanced Raman Spectroscopy Reveals the Controlled
Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title_fullStr | Graphene-Enhanced Raman Spectroscopy Reveals the Controlled
Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title_full_unstemmed | Graphene-Enhanced Raman Spectroscopy Reveals the Controlled
Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title_short | Graphene-Enhanced Raman Spectroscopy Reveals the Controlled
Photoreduction of Nitroaromatic Compound on Oxidized Graphene Surface |
title_sort | graphene-enhanced raman spectroscopy reveals the controlled
photoreduction of nitroaromatic compound on oxidized graphene surface |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6645006/ https://www.ncbi.nlm.nih.gov/pubmed/31459216 http://dx.doi.org/10.1021/acsomega.8b01285 |
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