The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica
<p>It was established that incomplete substitution of free silanols of fumed silica surface on (CH<sub>3</sub>)<sub>3</sub>Si-groups leads to an increase in the ability of modified SiO<sub>2</sub> to adsorb Ba<sup>2+</sup> cations from an electro...
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| Format: | Article |
| Language: | English |
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Vasyl Stefanyk Precarpathian National University
2018-04-01
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| Series: | Фізика і хімія твердого тіла |
| Online Access: | http://journals.pu.if.ua/index.php/pcss/article/view/2379 |
| _version_ | 1819149767898300416 |
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| author | I. F. Myronyuk H. V. Vasylyeva V. I. Mandzyuk N. A. Bezruka T. V. Dmytrotsa |
| author_facet | I. F. Myronyuk H. V. Vasylyeva V. I. Mandzyuk N. A. Bezruka T. V. Dmytrotsa |
| author_sort | I. F. Myronyuk |
| collection | DOAJ |
| description | <p>It was established that incomplete substitution of free silanols of fumed silica surface on (CH<sub>3</sub>)<sub>3</sub>Si-groups leads to an increase in the ability of modified SiO<sub>2</sub> to adsorb Ba<sup>2+</sup> cations from an electrolyte solution. Silica with 48.3% of trimethylsilyl (TMS) groups adsorbs 1.8 mmol·g<sup>-1</sup> of Ba<sup>2+</sup> cations from 0.01 M BaCl<sub>2</sub> solution, that in 3 times more than the adsorption of these cations by unmodified silica. It was found that the adsorption of cations by basic and modified silica is well described by the pseudo-second order Lagergren equation. The high adsorption activity of silica with chemisorbed TMS-groups is due to the formation of local regions with relatively large values of negative and positive electrostatic potentials in the vicinity of grafted TMS-groups.</p> |
| first_indexed | 2024-12-22T14:06:51Z |
| format | Article |
| id | doaj.art-cdb392e0cb624b6db2f1277b9735c00a |
| institution | Directory Open Access Journal |
| issn | 1729-4428 2309-8589 |
| language | English |
| last_indexed | 2024-12-22T14:06:51Z |
| publishDate | 2018-04-01 |
| publisher | Vasyl Stefanyk Precarpathian National University |
| record_format | Article |
| series | Фізика і хімія твердого тіла |
| spelling | doaj.art-cdb392e0cb624b6db2f1277b9735c00a2022-12-21T18:23:17ZengVasyl Stefanyk Precarpathian National UniversityФізика і хімія твердого тіла1729-44282309-85892018-04-01191667310.15330/pcss.19.1.66-732190The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silicaI. F. Myronyuk0H. V. Vasylyeva1V. I. Mandzyuk2N. A. Bezruka3T. V. Dmytrotsa4ДВНЗ "Прикарпатський національний університет ім. В. Стефаника"Ужгородський національний університетДВНЗ "Прикарпатський національний університет ім. В. Стефаника"Івано-Франківський національний медичний університетІвано-Франківський національний медичний університет<p>It was established that incomplete substitution of free silanols of fumed silica surface on (CH<sub>3</sub>)<sub>3</sub>Si-groups leads to an increase in the ability of modified SiO<sub>2</sub> to adsorb Ba<sup>2+</sup> cations from an electrolyte solution. Silica with 48.3% of trimethylsilyl (TMS) groups adsorbs 1.8 mmol·g<sup>-1</sup> of Ba<sup>2+</sup> cations from 0.01 M BaCl<sub>2</sub> solution, that in 3 times more than the adsorption of these cations by unmodified silica. It was found that the adsorption of cations by basic and modified silica is well described by the pseudo-second order Lagergren equation. The high adsorption activity of silica with chemisorbed TMS-groups is due to the formation of local regions with relatively large values of negative and positive electrostatic potentials in the vicinity of grafted TMS-groups.</p>http://journals.pu.if.ua/index.php/pcss/article/view/2379 |
| spellingShingle | I. F. Myronyuk H. V. Vasylyeva V. I. Mandzyuk N. A. Bezruka T. V. Dmytrotsa The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica Фізика і хімія твердого тіла |
| title | The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica |
| title_full | The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica |
| title_fullStr | The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica |
| title_full_unstemmed | The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica |
| title_short | The kinetics of adsorption binding of Ba<sup>2+</sup> ions by trimethylsilylated silica |
| title_sort | kinetics of adsorption binding of ba sup 2 sup ions by trimethylsilylated silica |
| url | http://journals.pu.if.ua/index.php/pcss/article/view/2379 |
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