Photosensitized Production of Singlet Oxygen via C60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation
- Authors
- Kim J.; Lee H.; Lee J.-Y.; Park K.-H.; Kim W.; Lee J.H.; Kang H.-J.; Hong S.W.; Park H.-J.; Lee S.; Lee J.-H.; Park H.-D.; Kim J.Y.; Jeong Y.W.; Lee J.
- Issue Date
- Aug-2020
- Publisher
- Elsevier B.V.
- Keywords
- C60 fullerene; Hydroxyl radical; Photosensitized oxidation; Remote disinfection; Singlet oxygen
- Citation
- Applied Catalysis B: Environmental, v.270
- Journal Title
- Applied Catalysis B: Environmental
- Volume
- 270
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/26442
- DOI
- 10.1016/j.apcatb.2020.118862
- ISSN
- 0926-3373
- Abstract
- This study demonstrates the capability of a C60-based sensitizer to remotely inactivate bacteria and viruses in air. The nucleophilic addition of amine groups attached to SiO2 particles (used as free-standing support or as hosts electrosprayed on a stainless-steel mesh) to the double bonds of C60 led to the production of recyclable sensitizers. The high-yield production of singlet oxygen (1O2) from the immobilized C60 was established by studying the effects of 1O2 quenchers and enhancer on furfuryl alcohol (FFA) oxidation efficiency and wavelength-dependent FFA decay kinetics. We monitored the inactivation rates of Staphylococcus aureus and MS-2 bacteriophage in petri dishes at predetermined distances from the 1O2 source and identified the probability of remote microbial inactivation via 1O2, which occurred up to 10-15 cm from the source. This result accorded with epoxy moiety occurrence as an indication of singlet oxygenation in the Fourier Transform-Infrared spectra of cis-polybutadiene in remote positions. © 2020 Elsevier B.V.
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