Facile nanostructured zinc oxide coating technique for antibacterial and antifouling air filters with low pressure drop

Kim, Ji-Hyeon; Lee, Ga-Hyun; Ma, Junfei; Lee, Seunghun

doi:10.1016/j.jcis.2021.12.139

Cited by 14 publications

(3 citation statements)

References 53 publications

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“…Notably, Mallakpour et al and Madushani et al extensively discussed various options for potential new air filter devices. Surface functionalization techniques, such as those involving tannic acid or hybrid materials, and the incorporation of antiviral and antibacterial agents, such as aluminum, zinc, or copper oxide, − contribute to the development of nanocoatings with antimicrobial effects. − These newly developed materials have been extensively tested on a broad spectrum of microorganisms, including bacteria, fungi, and viruses, − ,− yielding generally satisfactory results. Moreover, many studies underscore the importance of environmentally friendly technique, , aligning with a key objective of the present research.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Luceri,

Francese,

Perero

et al. 2024

ACS Appl. Mater. Interfaces

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The indoor air quality should be better controlled and improved to avoid numerous health issues. Even if different devices are developed for air filtration, the proliferation of microorganisms under certain conditions must be controlled. For this purpose, a silver nanocluster/silica composite coating was deposited via a cosputtering technique onto fiber glass and polymeric based substrates. The aim of this work is focused on the evaluation of the antibacterial and antiviral effects of the developed coating. The preliminary results of the compositional and morphological tests showed an evenly distributed coating on filters surfaces. Several antibacterial tests were performed, confirming strong effect both in qualitative and quantitative methods, against S. epidermidis and E. coli. To understand if the coating can stop the proliferation of bacteria colonies spread on it, simulation of everyday usage of filters was performed, nebulizing bacteria solution with high colonies concentration and evaluating the inhibition of bacteria growth. Additionally, a deep understanding of the virucidal action and mechanism of Ag nanoclusters of the coating was performed. The effect of the coating both in aqueous medium and in dry methods was evaluated, in comparison with analysis on ions release. The virucidal performances are assessed against the human coronavirus OC43 strain (HCoV-OC43).

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Section: Introductionmentioning

confidence: 99%

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Luceri,

Francese,

Perero

et al. 2024

ACS Appl. Mater. Interfaces

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“…Most importantly, they possess antibacterial properties, making them very useful in industry. 11 Research has been conducted on the use of nanocomposite bers in respiratory masks. Sanaw et al compared the efficiency of nanobers as a mask lter with a melt-blown layer in 2020.…”

Section: Introductionmentioning

confidence: 99%

Preparation of an innovative series of respiratory nano-filters using polystyrene fibrous films containing KCC-1 dendrimer and ZnO nanostructures for environmental assessment of SO₂, NO₂ and CO₂

Edrisi,

Mahmoudian,

Shadjou

2024

RSC Adv.

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“…Biofouling restricts the efficacy and performance of air filtration membranes via self-replicating bacterial growth on filter layers, resulting in biofilm formation, which eventually mechanically blocks the filtration surfaces. Therefore, several applications have been reported to mitigate biofouling and provide antipathogenic properties via the incorporation and immobilization of naturally occurring metals and their oxides, such as silver, copper, and zinc oxides, on polymeric air filter membranes [ 7 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Antipathogenic Applications of Copper Nanoparticles in Air Filtration Systems

Mekapothula,

Chrysanthou,

Hall

et al. 2024

Materials

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The COVID-19 pandemic has underscored the critical need for effective air filtration systems in healthcare environments to mitigate the spread of viral and bacterial pathogens. This study explores the utilization of copper nanoparticle-coated materials for air filtration, offering both antiviral and antimicrobial properties. Highly uniform spherical copper oxide nanoparticles (~10 nm) were synthesized via a spinning disc reactor and subsequently functionalized with carboxylated ligands to ensure colloidal stability in aqueous solutions. The functionalized copper oxide nanoparticles were applied as antipathogenic coatings on extruded polyethylene and melt-blown polypropylene fibers to assess their efficacy in air filtration applications. Notably, Type IIR medical facemasks incorporating the copper nanoparticle-coated polyethylene fibers demonstrated a >90% reduction in influenza virus and SARS-CoV-2 within 2 h of exposure. Similarly, heating, ventilation, and air conditioning (HVAC) filtration pre- (polyester) and post (polypropylene)-filtration media were functionalised with the copper nanoparticles and exhibited a 99% reduction in various viral and bacterial strains, including SARS-CoV-2, Pseudomonas aeruginosa, Acinetobacter baumannii, Salmonella enterica, and Escherichia coli. In both cases, this mitigates not only the immediate threat from these pathogens but also the risk of biofouling and secondary risk factors. The assessment of leaching properties confirmed that the copper nanoparticle coatings remained intact on the polymeric fiber surfaces without releasing nanoparticles into the solution or airflow. These findings highlight the potential of nanoparticle-coated materials in developing biocompatible and environmentally friendly air filtration systems for healthcare settings, crucial in combating current and future pandemic threats.

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Facile nanostructured zinc oxide coating technique for antibacterial and antifouling air filters with low pressure drop

Cited by 14 publications

References 53 publications

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Preparation of an innovative series of respiratory nano-filters using polystyrene fibrous films containing KCC-1 dendrimer and ZnO nanostructures for environmental assessment of SO₂, NO₂ and CO₂

Antipathogenic Applications of Copper Nanoparticles in Air Filtration Systems

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Facile nanostructured zinc oxide coating technique for antibacterial and antifouling air filters with low pressure drop

Cited by 14 publications

References 53 publications

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Antibacterial and Antiviral Activities of Silver Nanocluster/Silica Composite Coatings Deposited onto Air Filters

Preparation of an innovative series of respiratory nano-filters using polystyrene fibrous films containing KCC-1 dendrimer and ZnO nanostructures for environmental assessment of SO2, NO2 and CO2

Antipathogenic Applications of Copper Nanoparticles in Air Filtration Systems

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Preparation of an innovative series of respiratory nano-filters using polystyrene fibrous films containing KCC-1 dendrimer and ZnO nanostructures for environmental assessment of SO₂, NO₂ and CO₂