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Reusable Self-Sterilization Masks Based on Electrothermal Graphene Filters.
Shan, Xiaoli; Zhang, Han; Liu, Cihui; Yu, Liyan; Di, Yunsong; Zhang, Xiaowei; Dong, Lifeng; Gan, Zhixing.
  • Shan X; Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China.
  • Zhang H; Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, P. R. China.
  • Liu C; Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China.
  • Yu L; College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
  • Di Y; Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China.
  • Zhang X; Department of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, P. R. China.
  • Dong L; College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
  • Gan Z; Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University, Nanjing 210023, China.
ACS Appl Mater Interfaces ; 12(50): 56579-56586, 2020 Dec 16.
Article in English | MEDLINE | ID: covidwho-952789
Semantic information from SemMedBD (by NLM)
1. Surgical face mask PREVENTS disease transmission
Subject
Surgical face mask
Predicate
PREVENTS
Object
disease transmission
2. Surgical face mask PREVENTS disease transmission
Subject
Surgical face mask
Predicate
PREVENTS
Object
disease transmission
ABSTRACT
Surgical mask is recommended by the World Health Organization for personal protection against disease transmission. However, most of the surgical masks on the market are disposable that cannot be self-sterilized for reuse. Thus, when confronting the global public health crisis, a severe shortage of mask resource is inevitable. In this paper, a novel low-cost electrothermal mask with excellent self-sterilization performance and portability is reported to overcome this shortage. First, a flexible, ventilated, and conductive cloth tape is patterned and adhered to the surface of a filter layer made of melt-blown nonwoven fabrics (MNF), which functions as interdigital electrodes. Then, a graphene layer with premier electric and thermal conductivity is coated onto the MNF. Operating under a low voltage of 3 V, the graphene-modified MNF (mod-MNF) can quickly generate large amounts of heat to achieve a high temperature above 80 °C, which can kill the majority of known viruses attached to the filter layer and the mask surface. Finally, the optimized graphene-modified masks based on the mod-MNF filter retain a relatively high particulate matter (PM) removal efficiency and a low-pressure drop. Moreover, the electrothermal masks can maintain almost the same PM removal efficiency over 10 times of electrifying, suggesting its outstanding reusability.
Keywords

Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: ACS Appl Mater Interfaces Journal subject: Biotechnology / Biomedical Engineering Year: 2020 Document Type: Article Affiliation country: Acsami.0c16754

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Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: ACS Appl Mater Interfaces Journal subject: Biotechnology / Biomedical Engineering Year: 2020 Document Type: Article Affiliation country: Acsami.0c16754