Air pollution poses serious health threats. Even limited exposure to air pollutants, such as during haze periods, can trigger respiratory symptoms and aggravate existing heart or lung conditions. While there is a strong need for economical and effective technologies for air filtration, most nanofibres currently used in air filters require intensive energy and specialised equipment to produce.
The research team has developed a novel nanofibre solution for clean and fresh air. The novel nanofibre solution is applied to non-woven mesh to create thin, see-through air filters that can remove up to 90% of PM2.5 particles and achieve a high air flow that is 2.5 times better than conventional air filters. This nanofibre solutions is easy and quick to produce, offering a cost-effective alternative to currently available air filter solutions.
This patented technology engineers organic molecules from phthalocyanine as building blocks, whereby the molecules self-organise to form nanoparticles and subsequently, nanofibres. The nanofibres, which exist in the form of an organic solution, easily cling onto the non-woven mesh when dispersed onto the material.
It can filter up to 90% of hazardous PM2.5 particles. Furthermore, the nanofibre air filter maintains air flow that is 2.5 times better than commercial respirators, resulting in better breathability. The eco-friendly air filter is easy to produce and assemble, and users can simply apply the novel nanofibre solution onto a non-woven mesh and leave it to dry naturally.
The particle filtration efficiency can be further optimised according to different applications and required functionalities for the air filter. It is also possible to incorporate additional functionalities, e.g. anti-bacterial properties, into the air filter.
Benefits of the novel nanofibre air filter include: