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Quantification of Adsorbates by X-ray Absorption Spectroscopy: Getting TGA-like Information for Free
[Image: see text] Hard X-ray absorption spectroscopy (XAS) is frequently applied in catalysis and gas sorption studies to monitor changes in oxidation states, coordination numbers, and interatomic distances of active sites under in situ and operando conditions. However, transmission XAS data can rev...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9490794/ https://www.ncbi.nlm.nih.gov/pubmed/36157514 http://dx.doi.org/10.1021/acs.jpcc.2c00226 |
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author | Lomachenko, Kirill A. Molokova, Anastasia Yu. Atzori, Cesare Mathon, Olivier |
author_facet | Lomachenko, Kirill A. Molokova, Anastasia Yu. Atzori, Cesare Mathon, Olivier |
author_sort | Lomachenko, Kirill A. |
collection | PubMed |
description | [Image: see text] Hard X-ray absorption spectroscopy (XAS) is frequently applied in catalysis and gas sorption studies to monitor changes in oxidation states, coordination numbers, and interatomic distances of active sites under in situ and operando conditions. However, transmission XAS data can reveal also the change in the total amount of guest species adsorbed on the whole sample. Surprisingly, to the best of our knowledge, the latter property has never been exploited. Here, we present a simple method to quantify the amount of adsorbates from XAS data collected during the interaction of the sample with gases or liquids. The method relies on monitoring the change of the total absorption level below the measured absorption edge and does not require any additional instrumentation or modification of the XAS data collection procedure. Essentially, it is a way to obtain the information analogous to the one delivered by temperature-programmed reduction (TPR), temperature-programmed desorption (TPD), or thermogravimetric analysis (TGA) directly from XAS at no extra cost. |
format | Online Article Text |
id | pubmed-9490794 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-94907942022-09-22 Quantification of Adsorbates by X-ray Absorption Spectroscopy: Getting TGA-like Information for Free Lomachenko, Kirill A. Molokova, Anastasia Yu. Atzori, Cesare Mathon, Olivier J Phys Chem C Nanomater Interfaces [Image: see text] Hard X-ray absorption spectroscopy (XAS) is frequently applied in catalysis and gas sorption studies to monitor changes in oxidation states, coordination numbers, and interatomic distances of active sites under in situ and operando conditions. However, transmission XAS data can reveal also the change in the total amount of guest species adsorbed on the whole sample. Surprisingly, to the best of our knowledge, the latter property has never been exploited. Here, we present a simple method to quantify the amount of adsorbates from XAS data collected during the interaction of the sample with gases or liquids. The method relies on monitoring the change of the total absorption level below the measured absorption edge and does not require any additional instrumentation or modification of the XAS data collection procedure. Essentially, it is a way to obtain the information analogous to the one delivered by temperature-programmed reduction (TPR), temperature-programmed desorption (TPD), or thermogravimetric analysis (TGA) directly from XAS at no extra cost. American Chemical Society 2022-03-14 2022-03-24 /pmc/articles/PMC9490794/ /pubmed/36157514 http://dx.doi.org/10.1021/acs.jpcc.2c00226 Text en © 2022 American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Lomachenko, Kirill A. Molokova, Anastasia Yu. Atzori, Cesare Mathon, Olivier Quantification of Adsorbates by X-ray Absorption Spectroscopy: Getting TGA-like Information for Free |
title | Quantification of Adsorbates by X-ray Absorption
Spectroscopy: Getting TGA-like Information for Free |
title_full | Quantification of Adsorbates by X-ray Absorption
Spectroscopy: Getting TGA-like Information for Free |
title_fullStr | Quantification of Adsorbates by X-ray Absorption
Spectroscopy: Getting TGA-like Information for Free |
title_full_unstemmed | Quantification of Adsorbates by X-ray Absorption
Spectroscopy: Getting TGA-like Information for Free |
title_short | Quantification of Adsorbates by X-ray Absorption
Spectroscopy: Getting TGA-like Information for Free |
title_sort | quantification of adsorbates by x-ray absorption
spectroscopy: getting tga-like information for free |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9490794/ https://www.ncbi.nlm.nih.gov/pubmed/36157514 http://dx.doi.org/10.1021/acs.jpcc.2c00226 |
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