Antimicrobial photocatalytic PANI based-composites for biomedical applications
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Surface contamination and transmission can lead to Hospital Acquired Infections (HAI) in a healthcare environment. To tackle this problem, a sustainable antimicrobial coating is desirable. Photocatalytic coatings with titanium dioxide (TiO2) as the main component activated by UV light are one option. In order to implement the coating in a real-world hospital setting the photocatalytic component must show activity under visible light. In this article the TiO2 photocatalyst was synthesised as both 2- and 3- component composites with polyaniline (PANI) or poly(aniline-co-3-aminobenzoic acid) (fPANI) and Ag nanoparticles to achieve photocatalytic performance activated by visible light. The UV-DRS results supported the visible light photocatalytic capability of both 2- and 3-component composite systems, and the ESR spectra exhibited the presence of charge carriers (unpaired electrons), which was confirmed by conductivity studies. The intensity of the ESR peak increases around 3-fold for PAN...I/fPANI-TiO2-Ag composites compared to pure PANI/fPANI. The conductivity of pure PANI and fPANI was only mildly enhanced in 3-component systems, which could be due to presence of TiO2, whereas the value increased by around three times for PANI/fPANI-Ag 2-component system due to conductive Ag nanoparticles. The composites with fPANI showed improved antimicrobial activity than PANI composites against three representative microorganisms Escherichia coli, Staphylococcus aureus and a model viral strain bacteriophage Phi X 174. Finally, we proposed a mechanism for photocatalytic activity for both 2- and 3- component systems.
Ključne reči:
Polyaniline / Functionalised polyaniline / Photocatalytic composites / AntimicrobialIzvor:
Synthetic Metals, 2024, 303, 117562-Finansiranje / projekti:
- New Zealand Ministry of Business, Innovation and Employment [UOAX0812]
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200017 (Univerzitet u Beogradu, Institut za nuklearne nauke Vinča, Beograd-Vinča) (RS-MESTD-inst-2020-200017)
- PhD scholarship support RESE1902 by Callaghan Innovation New Zealand
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Institucija/grupa
VinčaTY - JOUR AU - Jose, Ajay AU - Yadav, Pooja AU - Svirskis, Darren AU - Swift, Simon AU - Gizdavić-Nikolaidis, Marija PY - 2024 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12827 AB - Surface contamination and transmission can lead to Hospital Acquired Infections (HAI) in a healthcare environment. To tackle this problem, a sustainable antimicrobial coating is desirable. Photocatalytic coatings with titanium dioxide (TiO2) as the main component activated by UV light are one option. In order to implement the coating in a real-world hospital setting the photocatalytic component must show activity under visible light. In this article the TiO2 photocatalyst was synthesised as both 2- and 3- component composites with polyaniline (PANI) or poly(aniline-co-3-aminobenzoic acid) (fPANI) and Ag nanoparticles to achieve photocatalytic performance activated by visible light. The UV-DRS results supported the visible light photocatalytic capability of both 2- and 3-component composite systems, and the ESR spectra exhibited the presence of charge carriers (unpaired electrons), which was confirmed by conductivity studies. The intensity of the ESR peak increases around 3-fold for PANI/fPANI-TiO2-Ag composites compared to pure PANI/fPANI. The conductivity of pure PANI and fPANI was only mildly enhanced in 3-component systems, which could be due to presence of TiO2, whereas the value increased by around three times for PANI/fPANI-Ag 2-component system due to conductive Ag nanoparticles. The composites with fPANI showed improved antimicrobial activity than PANI composites against three representative microorganisms Escherichia coli, Staphylococcus aureus and a model viral strain bacteriophage Phi X 174. Finally, we proposed a mechanism for photocatalytic activity for both 2- and 3- component systems. T2 - Synthetic Metals T1 - Antimicrobial photocatalytic PANI based-composites for biomedical applications VL - 303 SP - 117562 DO - 10.1016/j.synthmet.2024.117562 ER -
@article{ author = "Jose, Ajay and Yadav, Pooja and Svirskis, Darren and Swift, Simon and Gizdavić-Nikolaidis, Marija", year = "2024", abstract = "Surface contamination and transmission can lead to Hospital Acquired Infections (HAI) in a healthcare environment. To tackle this problem, a sustainable antimicrobial coating is desirable. Photocatalytic coatings with titanium dioxide (TiO2) as the main component activated by UV light are one option. In order to implement the coating in a real-world hospital setting the photocatalytic component must show activity under visible light. In this article the TiO2 photocatalyst was synthesised as both 2- and 3- component composites with polyaniline (PANI) or poly(aniline-co-3-aminobenzoic acid) (fPANI) and Ag nanoparticles to achieve photocatalytic performance activated by visible light. The UV-DRS results supported the visible light photocatalytic capability of both 2- and 3-component composite systems, and the ESR spectra exhibited the presence of charge carriers (unpaired electrons), which was confirmed by conductivity studies. The intensity of the ESR peak increases around 3-fold for PANI/fPANI-TiO2-Ag composites compared to pure PANI/fPANI. The conductivity of pure PANI and fPANI was only mildly enhanced in 3-component systems, which could be due to presence of TiO2, whereas the value increased by around three times for PANI/fPANI-Ag 2-component system due to conductive Ag nanoparticles. The composites with fPANI showed improved antimicrobial activity than PANI composites against three representative microorganisms Escherichia coli, Staphylococcus aureus and a model viral strain bacteriophage Phi X 174. Finally, we proposed a mechanism for photocatalytic activity for both 2- and 3- component systems.", journal = "Synthetic Metals", title = "Antimicrobial photocatalytic PANI based-composites for biomedical applications", volume = "303", pages = "117562", doi = "10.1016/j.synthmet.2024.117562" }
Jose, A., Yadav, P., Svirskis, D., Swift, S.,& Gizdavić-Nikolaidis, M.. (2024). Antimicrobial photocatalytic PANI based-composites for biomedical applications. in Synthetic Metals, 303, 117562. https://doi.org/10.1016/j.synthmet.2024.117562
Jose A, Yadav P, Svirskis D, Swift S, Gizdavić-Nikolaidis M. Antimicrobial photocatalytic PANI based-composites for biomedical applications. in Synthetic Metals. 2024;303:117562. doi:10.1016/j.synthmet.2024.117562 .
Jose, Ajay, Yadav, Pooja, Svirskis, Darren, Swift, Simon, Gizdavić-Nikolaidis, Marija, "Antimicrobial photocatalytic PANI based-composites for biomedical applications" in Synthetic Metals, 303 (2024):117562, https://doi.org/10.1016/j.synthmet.2024.117562 . .