Effect of chromium doping on the electrical and catalytic properties of powder titania under UV and visible illumination
Review articleOpen access

AbstractAlthough Cr-doped (0.85 at%) TiO2 absorbs in the visible region, it becomes a photoconductor only through band-gap illumination and the doping causes a considerable decrease in photoconductance. Its activity for oxidations (oxalic acid, propene, 2-propanol) and for oxygen isotope exchange is nil under visible illumination and is 25–1000 times diminished under UV light. This is attributed to an increase in electron—hole recombination at the Cr3+ ion sites. Conversely, similar doping might be envisaged to enhance the light stability of TiO2-containing materials if the colorimetric properties were maintained.

Request full text

References (0)

Cited By (0)

No reference data.
No citation data.
Join Copernicus Academic and get access to over 12 million papers authored by 7+ million academics.
Join for free!