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

Journal Article · Sun Feb 15 00:00:00 EST 2015 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.12.009· OSTI ID:22476029

Prusty, Debadutta; Pathak, Abhishek ^[1]; Mukherjee, Manabendra ^[2]; Mukherjee, Bratindranath ^[3]; Chowdhury, Anirban ^[1]

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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)

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.

• OSTI ID: 22476029
• Journal Information: Materials Characterization, Vol. 100; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

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