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11-04 :: April/May 2011

nanotimes News in Brief

51

Titania can be used to convert light into chemical energy. Such photocatalytic pro- cesses are much more efficient for the titania modification anatase (b) than for rutile (a)

© Dr. Mingchun Xu/ Ruhr-Universität Bochum

prevents “internal short circuits”. Knowledge of this feature will allow the researchers to further optimize shape, size, and doping of anatase particles used in- side photoreactors. The objective is to develop pho- toactive materials with higher efficiencies and longer lifetimes: “The results obtained by Professor Wöll and his co-workers are of great importance regarding the generation of electrical and chemical energy from sunlight, and especially regarding the optimization of photoreactors,” says Professor Olaf Deutschmann, spokesman of the Helmholtz Research Training Group on “Energy-related Catalysis”.

Mingchun Xu, Youkun Gao, Elias Martinez Moreno, Mari- nus Kunst, Martin Muhler, Yuemin Wang, Hicham Idriss, and Christof Wöll: Photocatalytic Activity of Bulk TiO2

Ana-

tase and Rutile Single Crystals Using Infrared Absorption Spectroscopy, In: Physical Review Letters, Vol. 106(2011), Issue 13, Article 138302 [4 pages], DOI: 10.1103/PhysRev- Lett.106.138302:

http://dx.doi.org/10.1103/PhysRevLett.106.138302

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