Preparation and characterization of praseodymium oxide films and powders.

Nanocrystalline praseodymium oxide films have been successfully generated on stainless steel substrates. The electrochemical deposition was performed in the cathode compartment of a divided electrochemical cell with a regular three-electrode configuration. The green films obtained by electrodeposition were then annealed at high temperatures for 1-3 hours. X-ray diffraction revealed the fluorite structure of Pr6O11 and the crystallite size was calculated. X-ray photoelectron spectroscopy was employed to study the composition of the oxide films and also the oxidation state of Pr. Scanning electron microscopy was utilized to study the surface texture and microstructure of deposits. Fourier transform infrared spectrometery was used to investigate the composition of the films. The effects of different conditions on the green films were also studied such as different pH values of the electrolyte solution, different deposition modes, different supporting electrolytes and different applied current densities. Sintering experiments were conducted to investigate the properties of the green films. Praseodymium oxide powders were also successfully prepared by combining electrochemical methods with sintering processes. The praseodymium oxide powders were characterized by X-ray diffraction and Fourier transform infrared spectroscopy. The crystallite sizes of the powders were evaluated.

Grantor dc:publisher

University of North Texas

Year dc:date

2004

Author dc:creator

• Shang, Yajuan

Contributors dc:contributor

• Golden, Teresa D.
• Omary, Mohammad

• Praseodymium.
• Metallic oxides.
• Thin films.
• Pr6O11
• crystallite size
• praseodymium oxide
• electrochemistry
• x-ray diffraction

Statement dc:rights

• Use restricted to UNT Community
• Copyright
• Shang, Yajuan
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 55700970
https://digital.library.unt.edu/ark:/67531/metadc4450/
ark: ark:/67531/metadc4450

OAI identifier oai:identifier

info:ark/67531/metadc4450