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Updated: Apr 29, 2026

Surface Properties of Synthesized Nanoporous Carbon and Silica Matrices
Published on: March 27, 2019
Comparative study of adsorption capacity of mesoporous silica materials for molsidomine: effects of functionalizing
N A Alyoshina1, A V Agafonov1, E V Parfenyuk1
1G.A. Krestov Institute of Solution Chemistry of Russian Academy of Sciences, 1 Akademicheskaya Str., Ivanovo, Russian Federation.
Abstract:
Adsorption capacities of mesoporous silica materials having various surface functional groups (hydroxyl, phenyl, mercaptopropyl, aminopropyl) at pH values of 4.8, 7.4, and 8.0 were studied. It was found that the maximum amount of adsorbed molsidomine is affected by method of preparation of the silica materials, chemistry of their surfaces and solution pH from where adsorption is carried out. The effects were explained by different states of the adsorbents and molsidomine in solution at the studied pH. The most efficient adsorption of molsidomine is observed onto phenyl modified silica prepared by grafting at pH4.8. Aminopropyl modified silica adsorbs the lowest amount of molsidomine and the adsorption was observed only at pH7.4. Interactions responsible for the adsorption were elucidated by spectroscopic studies.
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