Real Time, in situ observation of the photocatalytic destruction of saccharomyces cerevisiae cells by palladium-modified nitrogen-doped titanium oxide thin film

Jingtao Zhang, Qi Li, Ronghui Li, Jian Ku Shang

Research output: Contribution to journalArticlepeer-review

Abstract

Palladium-modified nitrogen-doped titanium oxide (TiON/PdO) thin film was synthesized by the ion-beam-assisted deposition technique, which enabled a heavy nitrogen doping and the subsequent light absorption extension to ~700nm for a better usage of the solar spectrum. Based on TiON/PdO thin film and a phase contrast microscope, a micro-reaction chamber was developed, which allowed the simultaneous optical excitation of the photocatalytic thin film and the phase contrast image observation of cells in it. The real time, in situ observation of the photocatalytic destruction of Saccharomyces cerevisiae (S.cerevisiae), an essential eukaryotic unicellular model of living cells, was conducted with this new observation technique, which demonstrated clearly that the photocatalytic destruction effect was much stronger than the photodamage effect caused by the visible light irradiation alone in the disinfection process.

Original languageEnglish (US)
Pages (from-to)48-54
Number of pages7
JournalJournal of Materials Science and Technology
Volume31
Issue number1
DOIs
StatePublished - 2015

Keywords

  • Ion-beam assisted deposition (IBAD)
  • Micro-reaction chamber
  • Photocatalytic destruction
  • TiON/PdO thin film
  • Visible-light

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Metals and Alloys
  • Materials Chemistry

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