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The particulates with an aerodynamic diameter ≤ 2.5 μm (PM 2.5) and its extracts can induce many human diseases.So, there is a great need for the development of filtration technologies to prevent harmful nanoparticles affecting human healthy.One of the most valid methods of removing particles from a gas stream is via fibrous filters.According to filtration theories, the smaller diameter of fibers leads to better filtration efficiency.