Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects
The property of non-ideality (cooperativity effects, energetic heterogeneity of binding centres) is often observed at probing surfaces by small ionic or molecular probes. A procedure based on the model of polydentate binding is recommended as a tool for detection and quantitative characterization of...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2014-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.32.4.305 |
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| author | Anton Panteleimonov Oleg Tkachenko Andrey Baraban Edilson V. Benvenutti Yoshitaka Gushikem Yuriy Kholin |
| author_facet | Anton Panteleimonov Oleg Tkachenko Andrey Baraban Edilson V. Benvenutti Yoshitaka Gushikem Yuriy Kholin |
| author_sort | Anton Panteleimonov |
| collection | DOAJ |
| description | The property of non-ideality (cooperativity effects, energetic heterogeneity of binding centres) is often observed at probing surfaces by small ionic or molecular probes. A procedure based on the model of polydentate binding is recommended as a tool for detection and quantitative characterization of these effects. This procedure allows one to find objective estimations of effective sorption capacities and constants of adsorption equilibria. In this study, adsorption of small probes by two hybrid silica–organic materials has been studied. Ormosil with immobilized n-propylamine was probed with H + ions, and in addition, CoCl 2 adsorption from solutions of ethanol by silica chemically modified with 3-n-propyltrimethoxysilane-1-methylimidazolium chloride was also investigated. In both cases, the model of bidentate binding properly fitted the experimental data. This made it possible to determine the quantitative characteristics of adsorption equilibria and to arrive at conclusions on the cooperativity effects. Negative cooperativity effects are significant in adsorption of H + ions, while strong positive cooperativity affects CoCl 2 binding. |
| format | Article |
| id | doaj-art-c8fd5fd566fd46ecb96f30e23aa4bd3f |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2014-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-c8fd5fd566fd46ecb96f30e23aa4bd3f2025-01-03T01:22:47ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382014-04-013210.1260/0263-6174.32.4.305Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity EffectsAnton Panteleimonov0Oleg Tkachenko1Andrey Baraban2Edilson V. Benvenutti3Yoshitaka Gushikem4Yuriy Kholin5 Inorganic Chemistry Department, Institute of Chemistry, State University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil Inorganic Chemistry Department, Institute of Chemistry, State University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil Materials Chemistry Department, V.N. Karazin Kharkiv National University, 4 Svoboda Square, Kharkiv, 61022, Ukraine Laboratory of Solid State Chemistry and Surfaces, Chemistry Institute, Federal University of Rio Grande do Sul, Avenida Bento Goncalves, 9500, Porto Alegre, RS, 91501-970, Brazil Inorganic Chemistry Department, Institute of Chemistry, State University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil Materials Chemistry Department, V.N. Karazin Kharkiv National University, 4 Svoboda Square, Kharkiv, 61022, UkraineThe property of non-ideality (cooperativity effects, energetic heterogeneity of binding centres) is often observed at probing surfaces by small ionic or molecular probes. A procedure based on the model of polydentate binding is recommended as a tool for detection and quantitative characterization of these effects. This procedure allows one to find objective estimations of effective sorption capacities and constants of adsorption equilibria. In this study, adsorption of small probes by two hybrid silica–organic materials has been studied. Ormosil with immobilized n-propylamine was probed with H + ions, and in addition, CoCl 2 adsorption from solutions of ethanol by silica chemically modified with 3-n-propyltrimethoxysilane-1-methylimidazolium chloride was also investigated. In both cases, the model of bidentate binding properly fitted the experimental data. This made it possible to determine the quantitative characteristics of adsorption equilibria and to arrive at conclusions on the cooperativity effects. Negative cooperativity effects are significant in adsorption of H + ions, while strong positive cooperativity affects CoCl 2 binding.https://doi.org/10.1260/0263-6174.32.4.305 |
| spellingShingle | Anton Panteleimonov Oleg Tkachenko Andrey Baraban Edilson V. Benvenutti Yoshitaka Gushikem Yuriy Kholin Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects Adsorption Science & Technology |
| title | Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects |
| title_full | Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects |
| title_fullStr | Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects |
| title_full_unstemmed | Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects |
| title_short | Probing Silica—Organic Hybrid Materials Using Small Probes: Simulation of Adsorption Equilibria Influenced by Cooperativity Effects |
| title_sort | probing silica organic hybrid materials using small probes simulation of adsorption equilibria influenced by cooperativity effects |
| url | https://doi.org/10.1260/0263-6174.32.4.305 |
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