Photosensitized Production of Singlet Oxygen via C60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation
- Photosensitized Production of Singlet Oxygen via C60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation
- 홍석원; Jaesung Kim; Hongshin Lee; Ju-Yeon Lee; Kang-Hee Park; Woongseob Kim; Jeong Hoon Lee; Hyun-Jin Kang; Hee-Jin Park; Seunghyun Lee; Jung-Hyun Lee; Hee-Deung Park; Jee Yeon Kim; Yong Won Jeong; Jaesang Lee
- C60 fullerene; Remote disinfection; Photosensitized oxidation; Singlet oxygen; Hydroxyl radical
- Issue Date
- Applied catalysis B, Environmental
- VOL 270, 118862
- 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.
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