Electrospun nanofibers (ES-NFs) have displayed various potential applications due to their light weight, high surface ratio, and interconnectivity.For instance, in the filtration field, incorporating ES-NFs into filtration media is a favored approach to achieve high filtration efficiency.Consequently, there is substantial increase in pressure drop to several hundreds.In this research, a basalt woven filter with silver nanoparticles (Ag NPs) loaded polyacrylonitrile (PAN) ES-NFs was developed.The results show that the Ag NPs solution dispersed more evenly in the spinning solution than Ag NPs powders, and thus achieving an even distribution of Ag NPs in fibers.The influence of Ag NPs concentration, spinning distance and voltage applied on the fiber structure were also investigated.A spinning system with 3 % Ag NPs, 22 cm spinning distance and 20 kV spinning voltage was chosen to acquire a stable spinning solution.The effect of applying electrostatic charge onto the filter during filtration performance was studied.It was proven that the utilization of electrostatic charge onto this filter, reduced the required quantity of ES-NFs up to 86 % and lowered the pressure drop to only 21.6 Pa, while maintaining a high filtration efficiency.Along with the raise in voltage from 0 to 50 kV, the filtration efficiency was enhanced from 66.7 to 92.8 %.This research shows the potential application of utilizing high electrostatic charge on ES-NFs containing Ag NPs for the development of high efficient filters with a lower pressure drop and fewer NFs consumption.
electrospun nanofibers silver nanoparticles filtration efficiency pressure drop
Jun Wang Jingchang Li Innocent Toendepi Lulu shi Chengxi Li Quan Zhu Yiping Qiu Wanshuang Liu Qiuran Jiang
Key Laboratory of Textile Science &Technology, Ministry of Education, College of Textiles, Donghua U National Cotton and Textile Quality Supervision and Inspection Center, China Department of Applied Chemistry, College of Chemistry, Chemical Engineering and Biotechnology, Dongh Key Laboratory of Textile Science &Technology, Ministry of Education, College of Textiles, Donghua U Donghua University Center for Civil Aviation Composites, Donghua University, China Key Laboratory of Textile Science &Technology, Ministry of Education, College of Textiles, Donghua U