ABSTRACT
The current Covid-19 (SARS-CoV-2) pandemic is causing a tremendous impact on all people in the world. The use of masks is part of preventive measures in spreading certain respiratory viral diseases, including Covid-19. One way to prevent viruses is to use fabric masks, but there is still a shortage that nano filters are needed as a material mask layer. The purpose of this research is to examine the effect of nanosilver concentration and nano-TiO2 concentration on mechanical strength, chemical composition, mixtures, morphology, mechanical strength, and effectiveness of the resulting nano-filter filtration. The nano filters are produced by mixing part of the chitosan solution (2% by weight), nanosilver activated carbon, and the nano-TiO2 solution is added and stirred until homogeneous. Based on the mechanical strength analysis, the best nano filter was obtained at an Ag 3% TiO2 4% concentration with a tensile strength of 7,471 Mpa and an elongation of 7%. The results of the FTIR test showed that nano filters with a concentration of Ag 3% and TiO2 4% found the highest absorption of the primary amine groups N-H2 and OH-. The results of SEM confirmed that the addition of Ag caused a decrease in the porosity of the nano filter. The results of the XRD showed the consistency of the presence of Ag and TiO2 nanoparticles. In addition, nano filters with a concentration of Ag 3% and TiO2 4% have a better rejection condition than other concentrations with a percentage of 77.54%. © 2023 Author(s).