Photo-generated conduction-band and shallow-trap electrons from UV irradiation on ethanol-adsorbed TiO2 and N-TiO2: an in situ infrared study

Photo-generated conduction-band and shallow-trap electrons from UV irradiation on... Keywords TiO  N-doped TiO  Conduction-band electrons  Shallow-trap 2 2 electrons  Adsorbed ethanol  FTIR  Photocatalysis Introduction Photocatalysis involves light-induced generation of electron–hole pairs and transfer of electrons and holes to adsorbed species on the semiconductor catalyst surface [1–4]. The overall quantum efficiency of a photocatalysis process is governed by the rates of charge separation, interfacial charge transfer, trapping, and recombination [5–7]. Photo-generated electrons and holes must reach the catalyst surface sites to initiate the charge transfer reaction for converting the adsorbed reactants to products. Many photocatalytic reactions are limited by the rapid recombination of electrons and holes. Although the time scales of photocatalytic steps range from femtoseconds to nanoseconds [8], the photo-generated electrons produced from adsorbed species can persist in TiO for a long period of time at a scale of minutes to hours after terminating UV irradiation [9]. These long-life electrons, which do not get involved in either recombination with holes or transfer to the catalytic site, could stay in the conduction band and in the shallow/deep traps. The trapped electrons have been 3? associated with Ti of which optical and electrical properties are affected by its surrounding lattice [10]. Many studies on Research on Chemical Intermediates Springer Journals

Photo-generated conduction-band and shallow-trap electrons from UV irradiation on ethanol-adsorbed TiO2 and N-TiO2: an in situ infrared study

Loading next page...
Springer Netherlands
Copyright © 2017 by Springer Science+Business Media B.V.
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial