Atrane complexes chemistry as a tool for obtaining trimodal UVM-7-like porous silica

The use of atrane complexes as hydrolytic precursors enables the homogeneous incorporation of manganese (25 [less-than or equal to] Si/Mn [less-than or equal to] 48) throughout the porous walls of the nanoparticles of a surfactant-templated bimodal mesoporous silica (UVM-7). The subsequent leaching...

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Bibliographic Details
Published in:Journal of coordination chemistry 2018-03, Vol.71 (6), p.776-785
Main Authors: Garrido, M. Dolores, García-Llacer, Carolina, El Haskouri, Jamal, Marcos, María D., Sánchez-Royo, Juan F., Beltrán, Aurelio, Amorós, Pedro
Format: Article
Language:English
Subjects:
Dispersion
Leaching
Macroporosity
Manganese
Microporosity
Porous materials
Porous walls
Silica
Silicon dioxide
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Summary:The use of atrane complexes as hydrolytic precursors enables the homogeneous incorporation of manganese (25 [less-than or equal to] Si/Mn [less-than or equal to] 48) throughout the porous walls of the nanoparticles of a surfactant-templated bimodal mesoporous silica (UVM-7). The subsequent leaching of the manganese nanodomains allows adding controlled microporosity to the host silica framework. The resulting final silica material presents three pore systems structured at different length scales: interparticle textural-type macroporosity (ca. 43.2 nm), ordered intraparticle mesoporosity (ca. 2.63 nm; after template removal), and well-dispersed microporosity (< 2 nm; as consequence of the lixiviation of the Mn-rich domains). The good dispersion of the guest element (Mn) in the silica intermediate provided by the atrane route is responsible for the disordered but regular microporosity achieved.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2018.1442002