Сорбція нітрату свинцю (II) нанопористими органо-неорганічними матеріалами
Sorption of bivalent lead cations and nitrate anions has been studied with β-cyclodextrin-containing nanoporous organo-inorganic materials with surface grafted functional groups of various chemical nature. The sorption process is characterized by a high enough rate to reach the sorption equilibrium...
Збережено в:
| Дата: | 2013 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2013
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| Онлайн доступ: | https://surfacezbir.com.ua/index.php/surface/article/view/508 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
Репозитарії
Surface| Резюме: | Sorption of bivalent lead cations and nitrate anions has been studied with β-cyclodextrin-containing nanoporous organo-inorganic materials with surface grafted functional groups of various chemical nature. The sorption process is characterized by a high enough rate to reach the sorption equilibrium for materials bearing bromoacetyl and thiosemicarbazidoacetyl functional groups. A great affinity has been found of organic-inorganic materials to lead (II) cations (Kd = 103). The sorption of Pb(II) has been found to occur due to their complex formation with the side functional groups of chemically grafted β‑cyclodextrins whereas nitrate anions form strong "host – guest" inclusion complexes. The β‑cyclodextrin-containing organo-inorganic materials can be recommended for the express analysis of lead (II) cations and nitrate anions in aqueous media with subsequent determination by spectrophotometry in the visible and ultraviolet regions. |
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