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Title: Synthesis of TiO{sub 2} core/RuO{sub 2} shell particles using multistep ultrasonic spray pyrolysis

Graphical abstract: - Highlights: • TiO{sub 2} core/RuO{sub 2} shell submicron-particles were prepared via a sequential spray pyrolysis. • Spherical particles have the mean particle diameters between 200 and 400 nm. • This method is promising for synthesis of core–shell and core–multishell materials. - Abstract: Spherical submicron-particles with TiO{sub 2} core–RuO{sub 2} shell structure have been synthesized by employing sequential ultrasonic spray pyrolysis. The particles have been investigated by X-ray powder diffraction, scanning electron microscopy and different transmission electron microscopy techniques. The quality of the core–shell structure of the particles has been confirmed by comparison of the experimental data with those generated on the basis of a hard sphere core–shell model. It has been found that the mixing of the Ru-containing aerosol with the TiO{sub 2} particle stream has a significant impact on the core–shell formation. The method introduced in this study can probably be applied for preparation of core–shell and core–multishell materials that are difficult to synthesize in a single step spray pyrolysis process.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4]
  1. IME – Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestr. 3, D-52056 Aachen (Germany)
  2. IPC – Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52074 Aachen (Germany)
  3. GFE – Central Facility for Electron Microscopy, RWTH Aachen University, Ahornstr. 55, D-52074 Aachen (Germany)
  4. (Germany)
Publication Date:
OSTI Identifier:
22341808
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 48; Journal Issue: 9; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PARTICLES; PYROLYSIS; RUTHENIUM OXIDES; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION