De Gruyter, Zeitschrift für Kristallographie - Crystalline Materials, 11(222), p. 617-624, 2007
DOI: 10.1524/zkri.2007.222.11.617
nano Online
Full text: Download
The power of the atomic pair density function method to study the local atomic structure of dispersed materials is discussed for three examples (I) supercapacitor hydrous ruthenia, (II) electroctalyst platinum-iron phosphate and (III) nanoparticle gold catalyst. Hydrous ruthenia appears to be amorphous, but was found to be nanocomposite with RuO2 nanocrystals supporting electronic and hydrous boundaries protonic conductivity. A platinum-iron phosphate electrocatalyst, that exhibits activity for the oxygen reduction reaction has platinum in a non-metallic state. In catalysts comprised of gold nanoparticles supported on TiO2, atomic correlations in the second atomic shell were observed suggesting interaction with the support that could modify gold chemical activity.