The present inventive concept relates to an air purification and nano dustproof window screen that is made of titanium dioxide nanofibers, more specifically to a titanium dioxide-filled nano dustproof window screen that is capable of blocking external pollutants such as fine dust, ultrafine dust, and yellow dust, having excellent air ventilation, flame-resistant performance, NOx removal efficiency, and visible light transmittance.

The invention described herein relates to non-woven mats and to methods for making same. The mat is formed from fibres that comprise a first polymeric material. The mat comprises a flange-portion (3) that is of greater density than the remaining portion of the mat and that further comprises a second thermoplastic polymeric material having a melting-point temperature that is lower than the melting-point temperature of the first polymeric material. The mats can be used in the formation of plates used in rotating biological contactors (RBCs). Other examples of applications include the formation of air filters, demisters and floating treatment wetlands.