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Highly stretchable ceramic sponge with excellent relaxation resistance for efficient air purification.
- Source :
-
Ceramics International . May2024, Vol. 50 Issue 10, p16775-16783. 9p. - Publication Year :
- 2024
-
Abstract
- Ceramic nanofibrous sponges are attractive for their broad applications in high-temperature air filtration, thermal insulation, sewage treatment, and catalyst support. However, the present ceramic sponges usually show brittle fracture even under tensile stresses. Herein, a ceramic sponge assembled by ultralong and crimped Si 3 N 4 nanofiber nanofibers is designed and prepared to achieve temperature-invariant reversible from liquid nitrogen to 1200 °C and large elongations (ductile failure over 100 %) as well as excellent compressive anti-puncturing property. Moreover, the ceramic sponge illustrates a high filtration efficiency of 99.6 % for PM 2.5 and a low-pressure drop of 32 Pa during a long-term test under high-speed gas flow. It can also support photocatalyst g-C 3 N 4 nanoparticles, yielding a high efficiency of photodegradation of nitrogen oxide gases. The well-designed ceramic nanofiber sponge with good comprehensive mechanical performances thus shows promising applications in air purification under extreme working conditions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 176436463
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.02.013