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Photosensitized Production of Singlet Oxygen via C-60 Fullerene Covalently Attached to Functionalized Silica-coated Stainless-Steel Mesh: Remote Bacterial and Viral Inactivation

Authors
Kim, JaesungLee, HongshinLee, Ju-YeonPark, Kang-HeeKim, WoongseobLee, Jeong HoonKang, Hyun-JinHong, Seok WonPark, Hee-JinLee, SeunghyunLee, Jung-HyunPark, Hee-DeungKim, Jee YeonJeong, Yong WonLee, Jaesang
Issue Date
5-8월-2020
Publisher
ELSEVIER
Keywords
C-60 fullerene; Remote disinfection; Photosensitized oxidation; Singlet oxygen; Hydroxyl radical
Citation
APPLIED CATALYSIS B-ENVIRONMENTAL, v.270
Indexed
SCIE
SCOPUS
Journal Title
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume
270
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/53793
DOI
10.1016/j.apcatb.2020.118862
ISSN
0926-3373
Abstract
This study demonstrates the capability of a C-60-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 C-60 led to the production of recyclable sensitizers. The high-yield production of singlet oxygen (O-1(2)) from the immobilized C-60 was established by studying the effects of O-1(2) 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 O-1(2) source and identified the probability of remote microbial inactivation via O-1(2), 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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Lee, Jae sang
공과대학 (건축사회환경공학부)
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