Robust, Reproducible Silica Scaffold for Liquid Flow Applications
A high-deposition-area, robust inorganic scaffold,
unique in its reproducible anisotropic macropores, is reported. This
scaffold has a Young’s modulus of 455 ± 34 kPa and a yield
strength of 215 ± 10 kPa in compression. It supports 3.5 ± 1.0 mL
min−1 cm−2 volumetric flux of water with a modest 4.4 kPa head
pressure. The scaffold is generated by freeze-casting a low-pH,
concentrated silicic acid solution, followed by supercritical drying
(SCD), changing the way water glass is used to generate support
substrates. The scaffold enables facile immobilization of molecules
or nanoparticles for liquid-phase applications, including heterogeneous
catalysis, separations, biomedical devices, and energy
storage.
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- Award ID(s):
- 1807913
- NSF-PAR ID:
- 10477848
- Editor(s):
- Schanze, Kirk S.
- Publisher / Repository:
- American Chemical Society
- Date Published:
- Journal Name:
- ACS Applied Engineering Materials
- Volume:
- 1
- Issue:
- 7
- ISSN:
- 2771-9545
- Page Range / eLocation ID:
- 1752 to 1758
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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