Researchers make nanofiber air filter that can be painted onto fabric

Researchers with the National University of Singapore have created a new type of air filter using nanofibers that is about two times more effective than commercial air respirators. This nanofiber air filter is see-through with better airflow than traditionally available air filters, and it also provides some level of UV protection. The air filter is described as eco-friendly and economical.

Unlike ordinary air filters, which are dense and block the light, this new nano fiber air filter allows light to pass through, and likewise has about 2.5 times greater air transmission versus ordinary filters. This makes it particular suitably for use in windows, where light and air could still get through while pollution and general smog is filtered out of the air.

According to the researchers, their creation can remove up to 90-percent of the PM2.5 particles in the air, and also block UV rays. Likewise, and in contrast with commercial filters, these air filters are made by painting the solution onto a non-woven mesh, which is then left to dry before being used. This means the nano fiber could reasonably be made available on the consumer level as a DIY type of paint.

Research lead Tan Swee Ching explained:

Air pollution poses serious health threats. Therefore, there is a strong need for economical and effective technologies for air filtration. Currently, most nanofibres used in air filters are energy intensive to produce and require specialised equipment. Our team has developed a simple, quick and cost-effective way of producing high-quality air filters that effectively remove harmful particles and further improves indoor air quality by enhancing air ventilation and reducing harmful UV rays.

SOURCE: National University of Singapore