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Low-pressure drop filter for effective nanoaerosol filtration, VOC conversion and bacteria killing

Due to the small sizes, nanoaerosols (diesel particulates, laser-printer particles; viruses; and small bacteria) can get into our respiratory, vascular, lymphatic and nervous systems, leading to various chronic diseases.

The multilayer nanofibre filter using multiple thin nanofibre layers, each supported by a permeable scrim material, attains high-capture efficiency of nanoaerosols. It also has a lower pressure drop compared to the case in which all nanofibres are packed in a single-layer.

By functionalising the nanofibre layer(s), gaseous pollutants can be converted to harmless substances while bacteria can be killed. These functions cannot be achieved with conventional coarse microfibre filters.

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