Particulate matter is one of the main pollutants in the air,which is a serious threat to human health and can induce a variety of diseases.Efficient filtration materials can effectively pro-tect the harm caused by particles in the air to the human body.In this paper,pure PAN fibers are fabricated by using electrospinning technology.Ag@PAN composite nanofiber membrane filter material is synthesized by in-situ reduction method.The obtained material is tested and character-ized to reveal the effects of nano-Ag on the micromorphology,mechanical properties and filtration properties of the composite nanofiber membrane.The results indicate that the mechanical proper-ties and air filtration performance of Ag@PAN nanofibers are superior to that of pure PAN nanofi-bers,and the Ag@PAN nanofiber membrane with the concentration of silver nitrate of 3.6 mmol·L-1 has the best properties,its tensile strength and elongation at break are 3.34 MPa and 55.30％,respectively,and the air filtration efficiency can reach 99.90％.
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