Physico-Chemical nanomaterials science

Bifunctional mesoporous organosilica for separation technologies and catalysis: synthesis strategies and architecture design
L. Lugina1, О. Dudarko2, N. Kobylinska3, K. Pamin4, E. Serwicka4
1National University of Kyiv-Mohyla Academy, Skovorody Str., Kyiv 04070, Ukraine, liya.lugina@gmail.com
2Chuiko Institute of Surface Chemistry of NAS of Ukraine, 17 General Naumov Str., Kyiv 03164, Ukraine;
3Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Srt, Kyiv, Ukraine, 01601
4Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 8 Niezapominajek str. Krakow 30-239, Poland

Mesoporous silica is quite desirable for separation and catalysis processes. At first, a mesoporous solid can provide accurate size and shape selectivity for substances, intermediates and products of reactions as well as for catalytic active sits for guest molecules. In additionally, mesoporous organosilica materials, primarily modified with functional groups are often considered as adsorbents of toxic compounds. Among the functional groups, phosphorus-, sulfur-, carboxyl- and amine-containing groups are more interesting for practical applications. For understanding of the relationships between natural porous architectures and their functionalities is essential to develop new ways for designing advanced mesoporous structured with advantageous features. The simultaneous introduction of the groups of different nature in the surface layer of adsorbents often leads to the manifestation of the cooperative or synergistic effect. SBA-15-based mesostructured silicas were synthesized and bi-functionalized with various combination groups to obtain materials with reversed/catalysis-phase mixed-mode mechanism with different functionalization degree:

Acknowledgements. Dr. O. Dudarko. thanks for the financial support of the present work Billateral project between Ministry of Education and Sciences of Ukraine and Ministry of Education of India, 2019-2021