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Recent advances in the application of ionic liquids in antimicrobial material for air disinfection and sterilization
Xizi Song1, Rujin Tian2, Kai Liu2
1Division of Environment and Sustainability, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, Hong Kong SAR, China.
Abstract:
Airborne transmission is one of the most unpredictable routes of infection. Nowadays, airborne diseases increase ever than before because of the complex living air environment. Apart from the inorganic particles, active microorganisms including bacteria, viruses, and fungi are incorporated in the pathogens acting as threaten to public health, which can hardly be treated by the traditional air purification methods based on adsorption. Therefore, effective filtration material with antimicrobial activity is demanded to solve the problem. Ionic liquids (ILs) are a category of salts that remain liquid at room temperature. The stable physico-chemical properties and extremely low vapor pressure make them suitable for a wide range of applications. Thanks to the numerous combinations of cations and anions, as well as the ability of inheriting properties from the parent ions, Ils are believed to be a promising industrial material. In recent decades, several Ils, such as imidazolium, pyridinium, pyrrolidinium, phosphonium, and choline, have been found to have antimicrobial activity in their monomeric or polymeric forms. This work focuses on the antimicrobial activity and safety of the latest types of ionic liquids, discussing the synthesis or manufacturing methods of Ils for air purification and filtration. Furthermore, possible applications of Ils antimicrobial materials in medical instruments and indoor environments are mentioned to encourage the scientific community to further explore the potential applications of Ils.
Insights
Ionic liquids (ILs) offer a novel solution for airborne disease control. These antimicrobial materials show promise for advanced air filtration and protecting public health.
Area of Science:
- Materials Science
- Environmental Science
- Microbiology
Background:
- Airborne diseases pose a significant public health threat, exacerbated by complex indoor environments.
- Traditional air purification methods struggle to eliminate airborne microorganisms like bacteria, viruses, and fungi.
- There is a critical need for advanced filtration materials with inherent antimicrobial properties.
Purpose of the Study:
- To investigate the antimicrobial activity and safety of novel ionic liquids (ILs) for air purification.
- To explore the synthesis and manufacturing of IL-based antimicrobial filtration materials.
- To discuss potential applications of IL antimicrobial materials in healthcare and indoor environments.
Main Methods:
- Review and analysis of recent research on ionic liquids with antimicrobial properties.
- Focus on specific IL types including imidazolium, pyridinium, pyrrolidinium, phosphonium, and choline derivatives.
- Evaluation of synthesis methods for ILs suitable for air filtration applications.
Main Results:
- Various ionic liquids (ILs) demonstrate significant antimicrobial activity in both monomeric and polymeric forms.
- ILs possess stable physicochemical properties and low vapor pressure, making them suitable for air purification.
- Emerging ILs show potential for effective microbial inactivation in air filtration systems.
Conclusions:
- Ionic liquids represent a promising class of materials for developing next-generation antimicrobial air filters.
- Further research into IL synthesis, safety, and application is encouraged for public health benefits.
- IL-based antimicrobial materials could revolutionize air quality management in medical and domestic settings.
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