Multiscale Colloidal Assembly of Silica Nanoparticles into Microspheres with Tunable Mesopores

A.J. (Remco) Fijneman; Joakim Högblom; Magnus Palmlöf; Gijsbertus de With; Michael Persson; Heiner Friedrich

doi:10.1002/adfm.202002725

Multiscale Colloidal Assembly of Silica Nanoparticles into Microspheres with Tunable Mesopores

A.J. (Remco) Fijneman, Joakim Högblom, Magnus Palmlöf, Gijsbertus de With, Michael Persson, Heiner Friedrich (Corresponding author)

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Abstract

Colloidal assembly of silica (nano)particles is a powerful method to design functional materials across multiple length scales. Although this method has enabled the fabrication of a wide range of silica-based materials, attempts to design and synthesize porous materials with a high level of tuneability and control over pore dimensions have remained relatively unsuccessful. Here, the colloidal assembly of silica nanoparticles into mesoporous silica microspheres (MSMs) is reported using a discrete set of silica sols within the confinement of a water-in-oil emulsion system. By studying the independent manipulation of different assembly parameters during the sol–gel process, a design strategy is outlined to synthesize MSMs with excellent reproducibility and independent control over pore size and overall porosity, which does not require additional ageing or post-treatment steps to reach pore sizes as large as 50 nm. The strategy presented here can provide the necessary tools for the microstructural design of the next generation of tailor-made silica microspheres for use in separation applications and beyond.

Original language	English
Article number	2002725
Number of pages	8
Journal	Advanced Functional Materials
Volume	30
Issue number	27
DOIs	https://doi.org/10.1002/adfm.202002725
Publication status	Published - 1 Jul 2020

Bibliographical note

Funding Information:
Electron microscopy was performed at the Center for Multiscale Electron Microscopy, Eindhoven University of Technology. N physisorption experiments were performed at the chemical analysis laboratory of Nouryon Pulp and Performance Chemicals AB. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska‐Curie grant agreement no. 676045. 2

Funding Information:
Electron microscopy was performed at the Center for Multiscale Electron Microscopy, Eindhoven University of Technology. N2 physisorption experiments were performed at the chemical analysis laboratory of Nouryon Pulp and Performance Chemicals AB. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement no. 676045.

Publisher Copyright:
© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

colloidal assembly
mesoporous silica microspheres
porosity characteristics
tuneability

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10.1002/adfm.202002725

Fijneman_AFM_FinalFinal author version , 3.41 MB

Cite this

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title = "Multiscale Colloidal Assembly of Silica Nanoparticles into Microspheres with Tunable Mesopores",

abstract = "Colloidal assembly of silica (nano)particles is a powerful method to design functional materials across multiple length scales. Although this method has enabled the fabrication of a wide range of silica-based materials, attempts to design and synthesize porous materials with a high level of tuneability and control over pore dimensions have remained relatively unsuccessful. Here, the colloidal assembly of silica nanoparticles into mesoporous silica microspheres (MSMs) is reported using a discrete set of silica sols within the confinement of a water-in-oil emulsion system. By studying the independent manipulation of different assembly parameters during the sol–gel process, a design strategy is outlined to synthesize MSMs with excellent reproducibility and independent control over pore size and overall porosity, which does not require additional ageing or post-treatment steps to reach pore sizes as large as 50 nm. The strategy presented here can provide the necessary tools for the microstructural design of the next generation of tailor-made silica microspheres for use in separation applications and beyond.",

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AU - de With, Gijsbertus

AU - Persson, Michael

AU - Friedrich, Heiner

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Multiscale Colloidal Assembly of Silica Nanoparticles into Microspheres with Tunable Mesopores

Abstract

Bibliographical note

Keywords

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Center for Multiscale Electron Microscopy (CMEM)

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Multiscale Colloidal Assembly of Silica Nanoparticles into Microspheres with Tunable Mesopores

Abstract

Bibliographical note

Keywords

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Center for Multiscale Electron Microscopy (CMEM)

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