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

Jaesung Kim, Hongshin Lee, Ju Yeon Lee, Kang Hee Park, Woongseob Kim, Jeong Hoon Lee, Hyun Jin Kang, Seok Won Hong, Hee Jin Park, Seunghyun Lee, Jung Hyun Lee, Hee Deung Park, Jee Yeon Kim, Yong Won Jeong, Jaesang Lee

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number118862
JournalApplied Catalysis B: Environmental
Volume270
DOIs
Publication statusPublished - 2020 Aug 5

Keywords

  • C fullerene
  • Hydroxyl radical
  • Photosensitized oxidation
  • Remote disinfection
  • Singlet oxygen

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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