Dr. Shirmohammadi studied textile chemistry at Azad university of Tehran in 2007-2010 as MS. He received his PhD degree in 2018 at same university. He academically focused on antibacterial and absorber air filters for clinical purpose such as healthcare respiratory mask and hospitals filter. Practically, he is CEO of a knowledge base company that producing of N95 respiratory masks, HME filters and hospital AC. He has a lot of papers, inventions and innovations in that field. Also, he is ambassador and panelist of Waterloo Filtration Institute (WFI) located in USA. Now, his research is on sustainable antibacterial air filtration using nanotechnology and modern technology.