A route for producing nano-CaRuO3 perovskite by combusting precursors prepared using reverse micelle synthesis.
Nanoparticles of Ca-Ru-O precursors have been prepared using a reverse micelle. Transmission electron microscopy and x-ray diffraction techniques showed that the precursors had an amorphous structure. The average diameter of the amorphous Ca-Ru-O particles was shown to be approximately 10 nm (within a range of +/- 2 nm). An interesting result was that a rod-like nano-CaRuO(3) perovskite was observed when the precursor was sintered at a temperature of 950 degrees C. Furthermore, the conversion of the powders to crystalline CaRuO(3) perovskite occurred upon heat treatment at 450 degrees C in air. This is much lower than that for a standard solid-state reaction for CaCO(3) and RuO(2).
Jiao
Shuqiang
S
Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK. sj332@cam.ac.uk
Kilby
Kamal Tripuraneni
KT
Zhang
Lijuan
L
Fray
Derek J
DJ
D002118:Calcium / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006358:Hot Temperature; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008823:Micelles; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D017975:Ruthenium Compounds / Q000737:chemistry*; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
D017610:Calcium Compounds; D046911:Macromolecular Substances; D008823:Micelles; D010087:Oxides; D017975:Ruthenium Compounds; C059910:perovskite; C027646:ruthenium tetraoxide; D014025:Titanium; D002118:Calcium