EXAFS Study of Dopant Ions with Different Charges in Nanocrystalline Anatase: Evidence for Space-Charge Segregation of Acceptor Ions

Nanocrystalline TiO2 (anatase) is an essential oxide for environment and energy applications. A combination of EXAFS spectroscopy and DFT calculations on a series of dopants with quite similar ion radius, but increasing ion charge, show boundary space charge segregation of acceptor cations. The pict...

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Bibliographic Details
Published in:	Chemphyschem Vol. 10; no. 8; pp. 1238 - 1246
Main Authors:	Knauth, Philippe, Chadwick, Alan V., Lippens, Pierre E., Auer, Gerhard
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 02-06-2009 WILEY‐VCH Verlag Wiley Wiley-VCH Verlag
Subjects:	anatase cations Chemical Sciences Condensed matter: structure, mechanical and thermal properties Crystallization Defects and impurities in crystals; microstructure density functional calculations doping Doping and impurity implantation in other materials Exact sciences and technology EXAFS spectroscopy Inorganic chemistry Ions Nanoparticles - chemistry Physics Spectrum Analysis Structure of solids and liquids; crystallography Thermodynamics Titanium - chemistry Vacancies Anatase Zirconium ions Segregation Doping Space charge Nanostructures EXAFS Yttrium ions Niobium Zinc captions Hot pressing density functional calculations Density functional method EXAFS spectroscopy Niobium ions Zinc ions Nanopowder Nanocrystal
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