New air filter design promises strong potential for applications in automobiles and industry. A high-performance composite sponge that works effectively to filter particulate matter in high temperature and high humidity environments has been designed by a team of researchers. Featuring excellent me
@PDMS composite sponge with customizable shape achieves high-efficiency filtration of PM pollutants under high temperature and high humidity conditions. Credit: Yukui Gou, Fuzhou UniversityA high-performance composite sponge that works effectively to filter particulate matter in high temperature and high humidity environments has been designed by a team of researchers. Featuring excellent mechanical properties, the sponge is made of environmentally friendly materials.
To build a better air filter, the team of scientists designed a three-dimensional particle capture device. They used a simple sacrificial template method to create a polydimethylsiloxane sponge. Next, they applied a polydopamine coating onto the sponge skeleton using anloading method. Then, a large number of ZIF-8 particles were grown on the PDA coating. ZIF-8 is a metal-organic framework, a class of porous materials that are versatile in their structural and chemical tunability.
The team tested their sponge under high temperature and high humidity conditions that simulated an industrial high-temperature environment. The results at the high temperatures and humidity demonstrate the composite sponge’s strong potential for applications in industry. “This study provides a new idea for designing 3D high-efficiency air filters that can adapt to harsh environments,” said Yuekun Lai, a professor at Fuzhou University. Because the composite sponge has good structural stability and can also be easily shaped, it is suitable for use in applications ranging from automobile exhaust to industrial chimneys to kitchen fans.
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