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  • Su, R.Århus Universitet,Aarhus University (author)

Rapid Synthesis of Porous, Mixed Phase Titania Films with Tailored Orientation of Rutile for Enhanced Photocatalytic Performance

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-12-12
  • American Chemical Society (ACS),2013

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:b5a87db8-e5c7-46c1-939e-0a63ac8043c3
  • https://research.chalmers.se/publication/193545URI
  • https://doi.org/10.1021/jp4106713DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We report on a new, one-step electrochemical oxidation method for the rapid synthesis of mixed phase, polycrystalline TiO2 porous films with oriented rutile within a few minutes. The orientation as well as the surface chemical composition of rutile nanocrystallites can readily be tuned by adjusting the additive concentrations of HCl or HF in the electrolyte during synthesis. All TiO2 films show similar large specific surface area, which is ideal for the application of photocatalysis and photoelectrocatalysis. Compared to the random-oriented TiO2 film, films with an increasing portion of exposed rutile (101) facets were found to be characterized by enhanced photocatalytic oxidation and photoelectrochemical performances. We also observed a synergistic promotion effect of the orientation and surface F impurity. Most interesting, our tailor-oriented porous TiO2 films prepared using HF as additive show an impressive photocurrent generation at zero bias, which is similar to 50 times higher compared to that of the random-oriented TiO2 film.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Christensen, M.Århus Universitet,Aarhus University (author)
  • Shen, Y. B.Århus Universitet,Aarhus University (author)
  • Kibsgaard, J.Århus Universitet,Aarhus University (author)
  • Esbjörnsson Elgh, Björn Neo,1980Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)k03esne (author)
  • Vang, R. T.Århus Universitet,Aarhus University (author)
  • Bechstein, R.Århus Universitet,Aarhus University (author)
  • Wendt, S.Århus Universitet,Aarhus University (author)
  • Palmqvist, Anders,1966Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)adde (author)
  • Iversen, B. B.Århus Universitet,Aarhus University (author)
  • Besenbacher, F.Århus Universitet,Aarhus University (author)
  • Århus UniversitetChalmers tekniska högskola (creator_code:org_t)

Related titles

  • In:Journal of Physical Chemistry C: American Chemical Society (ACS)117:51, s. 27039-270461932-74471932-7455

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