Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Oyku Demirel; Sarp Kolgesiz; Sena Yuce; Serap Hayat Soytaş; Derya Y. Koseoglu-Imer; Hayriye Unal

doi:10.1021/acsanm.2c04026

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Oyku Demirel, Sarp Kolgesiz, Sena Yuce, Serap Hayat Soytaş, Derya Y. Koseoglu-Imer, Hayriye Unal^*

^*Corresponding author for this work

Department of Environmental Engineering

Sabanci University

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Antibacterial air filter media offer an important solution to indoor air pollution from bioaerosols, which pose a serious threat to global public health. In this study, we introduced an antibacterial air filter based on nanofibers functionalized with a photothermal agent, which deactivates bacteria upon near-infrared (NIR) irradiation. Halloysite nanotube (HNT) clay nanoparticles coated with polydopamine (PDA), which heat up when exposed to NIR light, were utilized as photothermal agents to be incorporated into polyacrylonitrile (PAN) nanofibers. The resulting PAN/HNT-PDA nanofibers reached 102 °C after 2 min of NIR irradiation and physically destroyed Staphylococcus aureus (S. aureus) cells that were in contact with the nanofibers. In a simulated air filtration test system, photothermal nanofibers demonstrated a bioaerosol filtration efficiency of 99.97% and a quality factor of 0.14 Pa^-1. 10⁷S. aureus cells captured on the nanofibers were killed via a 10 min NIR-light irradiation, whereas the light-activated antibacterial properties of the nanofibers were maintained over 5 bioaerosol flow/NIR-treatment cycles. The photothermal agent-containing electrospun nanofibers presented here have a strong potential for aerosol removal as light-activated antibacterial air filters.

Original language	English
Pages (from-to)	18127-18137
Number of pages	11
Journal	ACS Applied Nano Materials
Volume	5
Issue number	12
DOIs	https://doi.org/10.1021/acsanm.2c04026
Publication status	Published - 23 Dec 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Funding

This work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under the project number 119Y131.

Funders	Funder number
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu	119Y131

Keywords

air filter
bioaerosol removal
light-activated antibacterial activity
nanofiber
photothermal agents

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/acsanm.2c04026

Cite this

@article{7629b1bd118a49a1a8435d73e29f5b18,

title = "Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters",

abstract = "Antibacterial air filter media offer an important solution to indoor air pollution from bioaerosols, which pose a serious threat to global public health. In this study, we introduced an antibacterial air filter based on nanofibers functionalized with a photothermal agent, which deactivates bacteria upon near-infrared (NIR) irradiation. Halloysite nanotube (HNT) clay nanoparticles coated with polydopamine (PDA), which heat up when exposed to NIR light, were utilized as photothermal agents to be incorporated into polyacrylonitrile (PAN) nanofibers. The resulting PAN/HNT-PDA nanofibers reached 102 °C after 2 min of NIR irradiation and physically destroyed Staphylococcus aureus (S. aureus) cells that were in contact with the nanofibers. In a simulated air filtration test system, photothermal nanofibers demonstrated a bioaerosol filtration efficiency of 99.97% and a quality factor of 0.14 Pa-1. 107S. aureus cells captured on the nanofibers were killed via a 10 min NIR-light irradiation, whereas the light-activated antibacterial properties of the nanofibers were maintained over 5 bioaerosol flow/NIR-treatment cycles. The photothermal agent-containing electrospun nanofibers presented here have a strong potential for aerosol removal as light-activated antibacterial air filters.",

keywords = "air filter, bioaerosol removal, light-activated antibacterial activity, nanofiber, photothermal agents",

author = "Oyku Demirel and Sarp Kolgesiz and Sena Yuce and {Hayat Soyta{\c s}}, Serap and Koseoglu-Imer, {Derya Y.} and Hayriye Unal",

year = "2022",

month = dec,

day = "23",

doi = "10.1021/acsanm.2c04026",

language = "English",

volume = "5",

pages = "18127--18137",

journal = "ACS Applied Nano Materials",

issn = "2574-0970",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

AU - Demirel, Oyku

AU - Kolgesiz, Sarp

AU - Yuce, Sena

AU - Hayat Soytaş, Serap

AU - Koseoglu-Imer, Derya Y.

AU - Unal, Hayriye

PY - 2022/12/23

Y1 - 2022/12/23

N2 - Antibacterial air filter media offer an important solution to indoor air pollution from bioaerosols, which pose a serious threat to global public health. In this study, we introduced an antibacterial air filter based on nanofibers functionalized with a photothermal agent, which deactivates bacteria upon near-infrared (NIR) irradiation. Halloysite nanotube (HNT) clay nanoparticles coated with polydopamine (PDA), which heat up when exposed to NIR light, were utilized as photothermal agents to be incorporated into polyacrylonitrile (PAN) nanofibers. The resulting PAN/HNT-PDA nanofibers reached 102 °C after 2 min of NIR irradiation and physically destroyed Staphylococcus aureus (S. aureus) cells that were in contact with the nanofibers. In a simulated air filtration test system, photothermal nanofibers demonstrated a bioaerosol filtration efficiency of 99.97% and a quality factor of 0.14 Pa-1. 107S. aureus cells captured on the nanofibers were killed via a 10 min NIR-light irradiation, whereas the light-activated antibacterial properties of the nanofibers were maintained over 5 bioaerosol flow/NIR-treatment cycles. The photothermal agent-containing electrospun nanofibers presented here have a strong potential for aerosol removal as light-activated antibacterial air filters.

AB - Antibacterial air filter media offer an important solution to indoor air pollution from bioaerosols, which pose a serious threat to global public health. In this study, we introduced an antibacterial air filter based on nanofibers functionalized with a photothermal agent, which deactivates bacteria upon near-infrared (NIR) irradiation. Halloysite nanotube (HNT) clay nanoparticles coated with polydopamine (PDA), which heat up when exposed to NIR light, were utilized as photothermal agents to be incorporated into polyacrylonitrile (PAN) nanofibers. The resulting PAN/HNT-PDA nanofibers reached 102 °C after 2 min of NIR irradiation and physically destroyed Staphylococcus aureus (S. aureus) cells that were in contact with the nanofibers. In a simulated air filtration test system, photothermal nanofibers demonstrated a bioaerosol filtration efficiency of 99.97% and a quality factor of 0.14 Pa-1. 107S. aureus cells captured on the nanofibers were killed via a 10 min NIR-light irradiation, whereas the light-activated antibacterial properties of the nanofibers were maintained over 5 bioaerosol flow/NIR-treatment cycles. The photothermal agent-containing electrospun nanofibers presented here have a strong potential for aerosol removal as light-activated antibacterial air filters.

KW - air filter

KW - bioaerosol removal

KW - light-activated antibacterial activity

KW - nanofiber

KW - photothermal agents

UR - http://www.scopus.com/inward/record.url?scp=85143065932&partnerID=8YFLogxK

U2 - 10.1021/acsanm.2c04026

DO - 10.1021/acsanm.2c04026

M3 - Article

AN - SCOPUS:85143065932

SN - 2574-0970

VL - 5

SP - 18127

EP - 18137

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 12

ER -

Photothermal Electrospun Nanofibers Containing Polydopamine-Coated Halloysite Nanotubes as Antibacterial Air Filters

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this