Applied surface science. 2022 Jul 30:591:153195. doi: 10.1016/j.apsusc.2022.153195 Q26.32024

Is atomic layer deposition of silver possible on N95 masks?

N95口罩上可以进行银的原子层沉积吗？翻译改进

Sarah Hashemi Astaneh¹, Harshdeep Bhatia¹, Bruna Egumi Nagay², Valentim Adelino R Barão², Gregory Jursich^{3 4}, Cortino Sukotjo^{4 5}, Christos G Takoudis^{1 4}

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作者单位

¹ Chemical Engineering Department, University of Illinois at Chicago, Chicago, IL 60607, United States.

² Department of Prosthodontics and Periodontology, University of Campinas (UNICAMP), Piracicaba Dental School, Piracicaba, São Paulo 13414-903, Brazil.

³ Chemistry Department, University of Illinois at Chicago, Chicago, IL 60607, United States.

⁴ Bioengineering Department, University of Illinois at Chicago, Chicago, IL 60607, United States.

⁵ Department of Restorative Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States.

DOI: 10.1016/j.apsusc.2022.153195 PMID: 35370332

摘要 Ai翻译

Due to the COVID19 outbreak, there has been increasing interest in tailoring, modifying and improving conventional personal protective equipment to increase their service life and make them more effective against viruses and bacteria. Here, atomic layer deposition (ALD) was used to functionalize the filter of N95 mask with nano-islands of silver. X-ray photoelectron spectroscopy and x-ray absorption fine structure were used for ALD silver characterization; microbiological assay was conducted to study the effectiveness of the deposited silver against the air-borne pathogen Staphylococcus aureus (S. aureus). Results showed that silver ALD successfully functionalized the N95 mask at 90 and 120 °C for two different numbers of ALD cycles (1100 and 1500 cycles). The deposited silver nano-islands were stable on the N95 filter media against washing. The leaching of silver nano-islands was studied using inductively coupled plasma mass spectrometry of phosphate-buffered saline solution after soaking the mask in it over predetermined times. <9% of Ag was removed after a maximum time of 4 h that was investigated. Antimicrobial tests showed that for samples functionalized with 1100 ALD cycles of Ag, 76% reduction in S. aureus colony-forming units content was observed after 24 h of biofilm development on the mask surfaces.

Keywords: Atomic Layer Deposition; Biofilm; N95 Respirators; Silver; Staphylococcus aureus.