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RESEARCH PRODUCT
Enlarged pore size in nanoparticulated bimodal porous silicas: Improving accessibility
Aurelio BeltránDaniel BeltránPedro AmorósMarta TortajadaAdela R. Mauri-aucejoAlaina MoraguesCarmen Guillemsubject
chemistry.chemical_classificationMaterials scienceDiffusionBiomoleculeKineticsNanoparticleNanotechnology02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciences0104 chemical sciencesAdsorptionchemistryChemical engineeringMechanics of MaterialsmedicineGeneral Materials ScienceSwellingmedicine.symptom0210 nano-technologyPorosityMesoporous materialdescription
Abstract Mass-transfer kinetics seems to be highly favored in siliceous materials constructed from the aggregation of mesoporous nanoparticles. Besides intra-particle mesopores, over the course of the aggregation process an inter-particle (textural) large pore system is generated. Diffusion constrains through the resulting hierarchically structured pore systems mainly depend on the characteristics of the intra-particle mesopores. By using alkanes as swelling agents, we have been able to significantly increase the intra-particle mesopore size in previously well characterized UVM-7 materials. The Winsor-III-like behavior associated with the presence of alkanes in the hydro-alcoholic reaction media used in the surfactant-assisted preparative procedure allows explaining the existence of limits to the mesopore size expansion. A preliminary study on enzyme adsorption by these UVM-7-modified solids offers promising results about their capabilities as supports for processing a variety of biomolecules.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-02-01 | Microporous and Mesoporous Materials |