Photosensitized Production of Singlet Oxygen via C60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation

Title
Photosensitized Production of Singlet Oxygen via C60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation
Authors
홍석원Jaesung KimHongshin LeeJu-Yeon LeeKang-Hee ParkWoongseob KimJeong Hoon LeeHyun-Jin KangHee-Jin ParkSeunghyun LeeJung-Hyun LeeHee-Deung ParkJee Yeon KimYong Won JeongJaesang Lee
Keywords
C60 fullerene; Remote disinfection; Photosensitized oxidation; Singlet oxygen; Hydroxyl radical
Issue Date
2020-08
Publisher
Applied catalysis B, Environmental
Citation
VOL 270, 118862
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.
URI
http://pubs.kist.re.kr/handle/201004/71111
ISSN
0926-3373
Appears in Collections:
KIST Publication > Article
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