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While single\u2010use polypropylene meltblown membranes are the established go\u2010to material for high\u2010performing mask filters, they are neither sustainable nor particularly resistant to sterilization methods. Herein an in\u2010depth analysis is provided of the sterilization efficiency, filtration efficiency, and breathing resistance of selected aerosol filters commonly implemented in facemasks, with a particular focus on the benefits of nanofibrous filters. After establishing a general overview over face mask filters and machine washing parameters required for successful decontamination, respective changes in filter performance and structure are presented. Sustainably manufactured, highly efficient, but also more fragile electrospun membranes not only offer competitive performance as well as a more environment\u2010friendly production and degradation process, but also support a subsequent sterilization and recharging approach via alcohol exposition and drying in an electric field. It is further elaborated on the prospective sustainability of each material to offer a clear outlook on electrospun membranes as the most promising filter membranes of the future.<\/jats:p>","DOI":"10.1002\/marc.202400867","type":"journal-article","created":{"date-parts":[[2024,12,28]],"date-time":"2024-12-28T02:28:54Z","timestamp":1735352934000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Sterilization and Filter Performance of Nano\u2010 and Microfibrous Facemask Filters \u2013 Electrospinning and Restoration of Charges for Competitive Sustainable Alternatives"],"prefix":"10.1002","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6493-596X","authenticated-orcid":false,"given":"Gordon","family":"Herwig","sequence":"first","affiliation":[{"name":"Empa, Swiss Federal Laboratories for Materials Science and Technology Laboratory for Biomimetic Membranes and Textiles  St. Gallen 9014 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