Ambient-temperature porogen-free method for preparation of silica-based macroporous materials

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dc.contributor.authorTrunov, Dan
dc.contributor.authorMuzika, František
dc.contributor.authorKříž, Anita
dc.contributor.authorŠtětina, Jiří
dc.contributor.authorSedlářová, Ivona
dc.contributor.authorDendisová, Marcela
dc.contributor.authorHassouna, Fatima
dc.contributor.authorŠoóš, Miroslav
dc.contributor.organizationDepartment of Chemical Engineering, University of Chemistry and Technology, Prague, Czech Republicen
dc.contributor.organizationInstitute of Physical Chemistry, Polish Academy of Sciencesen
dc.contributor.organizationDepartment of Dairy, Fat and Cosmetics, University of Chemistry and Technology, Prague, Czech Republicen
dc.contributor.organizationDepartment of Inorganic Technology, University of Chemistry and Technology, Prague, Czech Republicen
dc.contributor.organizationDepartment of Physical Chemistry, University of Chemistry and Technology, Prague, Czech Republicen
dc.contributor.organizationDepartment of Computing and Control Engineering, University of Chemistry and Technology, Prague, Czech Republicen
dc.date.accessioned2021-12-17T16:27:06Z
dc.date.available2021-12-17T16:27:06Z
dc.date.issued2021-12-01
dc.description.abstractThe presented work focuses on the synthesis of silica-based macroporous aggregates composed of silica nanoparticles using a template-free method. To improve the mechanical strength of the prepared fractal-like aggregates, the silica precursor tetraethyl orthosilicate (TEOS) is used during nanoparticle aggregation. The obtained results confirm the possibility to tailor the pore size distribution (PSD) simply by using primary particles of various sizes. The prepared porous materials have a porosity ranging from 60 to 74 % with a specific surface area between 10 to 200 m2/g and an average pore diameter from 30 to 1300 nm. Functionalization of the aggregate surface was done by replacing part of TEOS with a silica precursor that contained desired functional groups. This was demonstrated by preparing macroporous aggregates with carboxyl, amine and epoxy functional groups. The application of prepared aggregates was demonstrated by immobilization of urease from Canavalia ensiformis resulting in high enzyme activity compare to free enzymes.en
dc.description.sponsorshipThis work was supported by a Czech Science Foundation (GACR) grant 16-22997S and a specific university research – grant No A1_FCHI_2021_005. This publication is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 847413. Scientific work published as part of an international co-financed project founded from the program of the Minister of Science and Higher Education entitled "PMW" in the years 2020 - 2024; agreement no. 5005/H2020-MSCA-COFUND/2019/2.en
dc.identifier.citationDan Trunov, František Muzika, Anita Kříž, Jiří Štětina, Ivona Sedlářová, Marcela Dendisová, Fatima Hassouna and Miroslav Šoóš, Ambient-temperature porogen-free method for preparation of silica-based macroporous materials, Colloids and Surfaces A: Physicochemical and Engineering Aspects, (2021) doi:https://doi.org/10.1016/j.colsurfa.2021.128033en
dc.identifier.urihttps://open.icm.edu.pl/handle/123456789/20815
dc.language.isoen
dc.publisherElsevieren
dc.rightsAttribution-NoDerivatives 4.0 Międzynarodowe*
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/*
dc.subjectmacroporous materialen
dc.subjectporogen-free methoden
dc.subjectreactive gelationen
dc.subjectsilica aggregationen
dc.subjectfractal aggregatesen
dc.subjectenzyme immobilizationen
dc.titleAmbient-temperature porogen-free method for preparation of silica-based macroporous materialsen
dc.typearticleen
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