X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals
Layered clay systems intercalated with inorganic and organic compounds were analyzed to highlight how XPS can provide information on the different environments surrounding a particular atom as well as provide discernments on the size, coordination, and structural and oxidative transformations of the...
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MDPI AG
2021-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/23/7115 |
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| author | J. Theo Kloprogge Concepcion P. Ponce Danilo O. Ortillo |
| author_facet | J. Theo Kloprogge Concepcion P. Ponce Danilo O. Ortillo |
| author_sort | J. Theo Kloprogge |
| collection | DOAJ |
| description | Layered clay systems intercalated with inorganic and organic compounds were analyzed to highlight how XPS can provide information on the different environments surrounding a particular atom as well as provide discernments on the size, coordination, and structural and oxidative transformations of the intercalating/pillaring compounds. XPS data on the intercalation of urea and K-acetate in low- and high-defect kaolinite revealed the interaction of the intercalating group NH<sub>2</sub> with the siloxane functional groups in the interlayer surface. The intercalation of HDTMA in Mt demonstrated the use of XPS in monitoring the change in conformation assumed by alkylammonium intercalating compounds in Mt with increasing CEC. Studies on the pillaring of Mt by Al<sub>13</sub> and Ga<sub>13</sub> by XPS allowed determination of the coordination of the pillaring compound within the Mt layer. Lastly, the intercalation of hexacyanoferrate in hydrotalcite demonstrated the capability of XPS in following changes in the oxidation state of the iron compound. These were gleaned from interpretation of the shifts in binding energies and presence of multiplet splitting in the XPS of the component elements of the minerals or the intercalating compounds. |
| first_indexed | 2024-03-10T04:50:51Z |
| format | Article |
| id | doaj.art-ee96488d31bb43bcac5a649ba3dbb211 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:50:51Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-ee96488d31bb43bcac5a649ba3dbb2112023-11-23T02:38:29ZengMDPI AGMaterials1996-19442021-11-011423711510.3390/ma14237115X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay MineralsJ. Theo Kloprogge0Concepcion P. Ponce1Danilo O. Ortillo2School of Earth and Environmental Sciences, The University of Queensland, Brisbane, QLD 4072, AustraliaDepartment of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, Miagao, Iloilo 5023, PhilippinesDepartment of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, Miagao, Iloilo 5023, PhilippinesLayered clay systems intercalated with inorganic and organic compounds were analyzed to highlight how XPS can provide information on the different environments surrounding a particular atom as well as provide discernments on the size, coordination, and structural and oxidative transformations of the intercalating/pillaring compounds. XPS data on the intercalation of urea and K-acetate in low- and high-defect kaolinite revealed the interaction of the intercalating group NH<sub>2</sub> with the siloxane functional groups in the interlayer surface. The intercalation of HDTMA in Mt demonstrated the use of XPS in monitoring the change in conformation assumed by alkylammonium intercalating compounds in Mt with increasing CEC. Studies on the pillaring of Mt by Al<sub>13</sub> and Ga<sub>13</sub> by XPS allowed determination of the coordination of the pillaring compound within the Mt layer. Lastly, the intercalation of hexacyanoferrate in hydrotalcite demonstrated the capability of XPS in following changes in the oxidation state of the iron compound. These were gleaned from interpretation of the shifts in binding energies and presence of multiplet splitting in the XPS of the component elements of the minerals or the intercalating compounds.https://www.mdpi.com/1996-1944/14/23/7115X-ray photoelectron spectroscopyclay intercalationpillared clayskaolinitemontmorillonitehydrotalcite |
| spellingShingle | J. Theo Kloprogge Concepcion P. Ponce Danilo O. Ortillo X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals Materials X-ray photoelectron spectroscopy clay intercalation pillared clays kaolinite montmorillonite hydrotalcite |
| title | X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals |
| title_full | X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals |
| title_fullStr | X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals |
| title_full_unstemmed | X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals |
| title_short | X-ray Photoelectron Spectroscopic Study of Some Organic and Inorganic Modified Clay Minerals |
| title_sort | x ray photoelectron spectroscopic study of some organic and inorganic modified clay minerals |
| topic | X-ray photoelectron spectroscopy clay intercalation pillared clays kaolinite montmorillonite hydrotalcite |
| url | https://www.mdpi.com/1996-1944/14/23/7115 |
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