Synthesis of Electrospun PAN/TiO₂/Ag Nanofibers Membrane As Potential Air Filtration Media with Photocatalytic Activity

Abstract

The PAN/TiO 2 /Ag nanofibers membrane for air filtration media was successfully synthesized with electrospinning method. The morphology, size, and element percentage of the nanofiber were characterized by a scanning electron microscopy–energy dispersive spectroscopy, while X-ray fluorescence and FTIR were used to observe the chemical composition. The water contact angle and UV–vis absorption were measured for physical properties. Performance for air filtration media was measured by pressure drop, efficiency, and quality factor test. TiO 2 and Ag have been successfully deposited in nonuniform 570 nm PAN/TiO 2 /Ag nanofibers. The nanofiber membrane had hydrophilic surface after TiO 2 and Ag addition with a water contact angle of 34.58°. UV–vis data showed the shifting of absorbance and band gap energy of nanofibers membrane to visible light from 3.8 to 1.8 eV. The 60 min spun PAN/TiO 2 /Ag nanofibers membrane had a 96.9% efficiency of PM 2.5 , comparable to results reported in previous studies. These properties were suitable to be applied on air filtration media with photocatalytic activity for self-cleaning performance.

Electrospun Silica-Polyacrylonitrile Nanohybrids for Water Treatments

“…They reported that Ag nanoparticles gave the filters antibacterial properties. Hartati et al also synthesized the electrospun membrane for air filtration by incorporating TiO 2 /Ag into the PAN matrix [ 26 ]. Khalili and Chenari successfully fabricated Zirconia-based ceramic nanofibers followed by calcination at different temperatures [ 27 ].…”

Recent Developments of Electrospinning-Based Photocatalysts in Degradation of Organic Pollutants: Principles and Strategies

“…To prepare a water-insoluble membrane, PAN, N , N -dimethylformamide (DMF), TiO 2, and AgNO 3 were mixed for loading in an electrospinning syringe to prepare the PAN/TiO 2 /Ag nanofiber. 33 As depicted in the SEM image of Figure 14 , TiO 2 /Ag nanoparticles are deposited on PAN nanofibers. The photocatalytic reaction mechanism was investigated, and the schematic of the photogenerated charge carriers’ generation is illustrated in Figure 14 .…”

“…To prepare a water-insoluble membrane, PAN, N , N -dimethylformamide (DMF), TiO 2, and AgNO 3 were mixed for loading in an electrospinning syringe to prepare the PAN/TiO 2 /Ag nanofiber . As depicted in the SEM image of Figure , TiO 2 /Ag nanoparticles are deposited on PAN nanofibers.…”

“… Mechanism of dye degradation on PAN/TiO 2 /Ag nanofibers and its corresponding SEM image. Reprinted with permission from ref ( 33 ). Copyright 2021 American Chemical Society.…”

Waste acrylonitrile butadiene styrene (ABS) incorporated with polyvinylpyrrolidone (PVP) for potential water filtration membrane

“…12(c). Incorporating various functional material can achieve antibacterial, hydrophobic, and antifouling properties, [85][86][87] as shown in Fig. 12(d).…”