Indoor gas phase photoactivity of yttrium modified titanate films for fast acetaldehyde oxidation

Vicente Rodríguez-González, Mao Sasaki, Junki Ishii, Sovann Khan, Chiaki Terashima, Norihiro Suzuki, Akira Fujishima

Research output: Contribution to journalArticlepeer-review

Abstract

Photoactive materials hold structural and catalytic features that make them particularly suitable for environmental applications and in the present work, protonated H3Ti3O7–Y nanofiber-like materials were prepared via the microwave assisted hydrothermal technique. The as-prepared nanofibers exhibited high surface area with titanate structure. The nanofibers, before and after yttrium incorporation, were well-distributed and the fibrous morphology could be observed clearly; as the yttrium loading increased, ribbons and the anatase phase were formed. Practical films of these nanofibers confirmed their likely UV-photoactive properties with 200 ppm of acetaldehyde degradation within 25 min in the presence of 50% of humidity. Activity retention was achieved, keeping stability for 2 consecutive cycles at room temperature. Nowadays, the increase in home office work sets human health at risk, for the exposure to toxic volatile organic compounds and microorganisms such as viruses and bacteria is more frequent indoors. In this context, the synthesized photoactive yttrium-titanate films stand as upcoming practical UV-driven materials for cleaning pollution that concentrated urban activity and indoor environments.

Original languageEnglish
Article number129992
JournalChemosphere
Volume275
DOIs
Publication statusPublished - Jul 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Chemistry(all)
  • Environmental Chemistry
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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