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Title: TEM and XPS studies on the faceted nanocrystals of Ce{sub 0.8}Zr{sub 0.2}O{sub 2}

Faceted nanocrystals of Ce{sub 0.8}Zr{sub 0.2}O{sub 2} synthesised by co-precipitation method were characterised by X-ray diffraction, high-resolution transmission electron microscopy, thermogravimetry–differential scanning calorimetry and X-ray photoelectron spectroscopy techniques. The nanocrystals were highly faceted and exhibited a cubic phase. X-ray photoelectron spectroscopy analyses confirmed the presence of vacancy related defects and revealed the presence of ~ 22% of Ce{sup 3} {sup +} in the nanopowders. High-resolution transmission electron microscopy results confirmed that the nanocrystal sizes are around 31 ± 5 nm and the obtained hexagonal cross-section shape is bound by hexagonal (111) and square (100) facets. The shape-controlled nanocrystals were synthesised without using any surfactants or complexing agents and retained their morphology beyond 800 °C. This is a simple and easy method for producing shape-controlled Ce{sub 0.8}Zr{sub 0.2}O{sub 2} nanoparticles which can be used for catalytic conversion and other related advanced technological areas. - Graphical abstract: Display Omitted - Highlights: • Synthesis of Ce{sub 0.8}Zr{sub 0.2}O{sub 2} faceted nanocrystal of hexagonal morphology. • Nanopowders synthesised without any surfactant; retained morphology beyond 800 °C. • XPS analyses confirm the potential of these powders for catalytic applications.
Authors:
;  [1] ;  [2] ;  [3] ;  [1]
  1. Research & Development, Tata Steel Limited, Jamshedpur 831001 (India)
  2. Saha Institute of Nuclear Physics, Kolkata 700064 (India)
  3. Department of Metallurgical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, 221005 (India)
Publication Date:
OSTI Identifier:
22476029
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 100; Other Information: Copyright (c) 2015 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:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALORIMETRY; CERIUM COMPOUNDS; CONVERSION; COPRECIPITATION; CROSS SECTIONS; NANOPARTICLES; NANOSTRUCTURES; OXYGEN COMPOUNDS; RESOLUTION; SURFACTANTS; THERMAL GRAVIMETRIC ANALYSIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY; ZIRCONIUM COMPOUNDS