Detection of H2O2 Released from TiO2 Photocatalyst to Air

• KUBO Wakana

  Institute of Industrial Science, The University of Tokyo

• TATSUMA Tetsu

  Institute of Industrial Science, The University of Tokyo

Abstract

H₂O₂ generated and released from TiO₂ photocatalysts to the gas phase was detected. A flow-through cell packed with TiO₂-coated glass beads was irradiated with UV light, and the gas flowing out of the cell was flushed through a collecting solution containing 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulforic acid) diammonium salt (ABTS) and peroxidase. Oxidative coloration of ABTS was observed only in the absence of catalase, indicating the presence of H₂O₂ in the gas. The quantum yield of the H₂O₂ generation was estimated to be >1 × 10^-7. The detected amount of H₂O₂ decreased as the TiO₂ thickness decreased. H₂O₂ was not detected when dry air or nitrogen was used.

Journal

• Analytical Sciences

  Analytical Sciences 20 (4), 591-593, 2004

  The Japan Society for Analytical Chemistry

Keywords

• Analytical Chemistry

Details

• CRID: 1390001204258599808
• NII Article ID: 10012850356
• NII Book ID: AA10500785
• DOI: 10.2116/analsci.20.591
• COI: 1:CAS:528:DC%2BD2cXjsVGltLw%3D
• ISSN: 13482246
• ISSN: 09106340
• NDL BIB ID: 6911919
• PubMed: 15116953
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6911919
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.20.591.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.20.591/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/20/4/20_4_591/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed