Interaction of SBA-15 with Dilute Acetic Acid and Ammonia
The SAXS pattern and pore volume of SBA-15 are not affected by aging SBA-15 with water, dilute acetic acid, and ammonia up for to 1 month, while the specific surface area is substantially depressed in interactions with basic solutions. The SEM images indicate pits on the side surfaces of SBA-15 part...
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MDPI AG
2025-06-01
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| Series: | Colloids and Interfaces |
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| Online Access: | https://www.mdpi.com/2504-5377/9/3/39 |
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| author | Marta Kalbarczyk Sebastian Skupiński Daniel Kamiński Marek Kosmulski |
| author_facet | Marta Kalbarczyk Sebastian Skupiński Daniel Kamiński Marek Kosmulski |
| author_sort | Marta Kalbarczyk |
| collection | DOAJ |
| description | The SAXS pattern and pore volume of SBA-15 are not affected by aging SBA-15 with water, dilute acetic acid, and ammonia up for to 1 month, while the specific surface area is substantially depressed in interactions with basic solutions. The SEM images indicate pits on the side surfaces of SBA-15 particles in interactions with basic solutions. Aging of SBA-15 in ammonia solutions results in cavities formed by the collapse of walls between neighboring hexagonal channels in the SBA-15. This phenomenon is discussed with a special emphasis on its possible effect on the potentiometric titration curves. Especially, a standard procedure, in which the SSA measured before the titration is used to calculate the <i>σ</i><sub>0</sub>, is compared with a modified procedure, in which the SSAs measured before and after the titration are used to estimate the SSA for each data point separately. |
| format | Article |
| id | doaj-art-63fbaa54a7f94abeade896b68257f874 |
| institution | Kabale University |
| issn | 2504-5377 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Colloids and Interfaces |
| spelling | doaj-art-63fbaa54a7f94abeade896b68257f8742025-08-20T03:26:56ZengMDPI AGColloids and Interfaces2504-53772025-06-01933910.3390/colloids9030039Interaction of SBA-15 with Dilute Acetic Acid and AmmoniaMarta Kalbarczyk0Sebastian Skupiński1Daniel Kamiński2Marek Kosmulski3Laboratory of Electrochemistry, Department of Electrical Engineering and Smart Technologies, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, PolandLaboratory of Electrochemistry, Department of Electrical Engineering and Smart Technologies, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, PolandDepartment of Organic Chemistry and Crystallography, Institute of Chemical Sciences, Faculty of Chemistry, Maria-Curie-Skłodowska University in Lublin, Pl. M Curie-Skłodowskiej 3, 20-031 Lublin, PolandLaboratory of Electrochemistry, Department of Electrical Engineering and Smart Technologies, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, PolandThe SAXS pattern and pore volume of SBA-15 are not affected by aging SBA-15 with water, dilute acetic acid, and ammonia up for to 1 month, while the specific surface area is substantially depressed in interactions with basic solutions. The SEM images indicate pits on the side surfaces of SBA-15 particles in interactions with basic solutions. Aging of SBA-15 in ammonia solutions results in cavities formed by the collapse of walls between neighboring hexagonal channels in the SBA-15. This phenomenon is discussed with a special emphasis on its possible effect on the potentiometric titration curves. Especially, a standard procedure, in which the SSA measured before the titration is used to calculate the <i>σ</i><sub>0</sub>, is compared with a modified procedure, in which the SSAs measured before and after the titration are used to estimate the SSA for each data point separately.https://www.mdpi.com/2504-5377/9/3/39mesoporous silicasurface chargingsurface charge density |
| spellingShingle | Marta Kalbarczyk Sebastian Skupiński Daniel Kamiński Marek Kosmulski Interaction of SBA-15 with Dilute Acetic Acid and Ammonia Colloids and Interfaces mesoporous silica surface charging surface charge density |
| title | Interaction of SBA-15 with Dilute Acetic Acid and Ammonia |
| title_full | Interaction of SBA-15 with Dilute Acetic Acid and Ammonia |
| title_fullStr | Interaction of SBA-15 with Dilute Acetic Acid and Ammonia |
| title_full_unstemmed | Interaction of SBA-15 with Dilute Acetic Acid and Ammonia |
| title_short | Interaction of SBA-15 with Dilute Acetic Acid and Ammonia |
| title_sort | interaction of sba 15 with dilute acetic acid and ammonia |
| topic | mesoporous silica surface charging surface charge density |
| url | https://www.mdpi.com/2504-5377/9/3/39 |
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