Citation: ZHANG Guo-Fang, LI Li-Ping. Spectrum and Electrochemical Properties of Nanosized Ce_1-xBi_xO_2-δ Solid Solutions[J]. Chinese Journal of Structural Chemistry, ;2015, 34(4): 529-535. doi: 10.14102/j.cnki.0254-5861.2011-0588 shu

Spectrum and Electrochemical Properties of Nanosized Ce_1-xBi_xO_2-δ Solid Solutions

ZHANG Guo-Fang ^a,b,c,, ,
LI Li-Ping ^c

a.
a. School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;
b.
b. Key Laboratory of Intergrate Exploration of Bayan Obo Multi-metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China;
c.
c. State Key Structural Chemistry Laboratory, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian 350002, China

Corresponding author: ZHANG Guo-Fang,
Received Date: 1 December 2014
Available Online: 29 January 2015
Fund Project: This project was financially supported by the National Natural Science Foundations of China (No. 51371094, 51161015) (No. 51371094, 51161015)the Inner Mongolia Natural Science Foundation (No. 2013MS0806) (No. 2013MS0806)

Ce_1-xBi_xO_2-δ (x=0.00, 0.03, 0.05, 0.07, 0.10, 0.15, 0.30) solid solutions were synthesized via a hydrothermal method. The structure, spectra and electrochemical transport properties of the samples were characterized systematically. The powder X-ray diffraction analysis showed that all of the doped samples exhibited single phase fluorite structure. The particle sizes decreased from 18 to 9 nm and the lattice parameters increased gradually with the dopant content increasing from x=0.03 to x=0.30. The Bi³⁺ doping also induced the F_2g Raman peak to shift from 463 to 455 cm^-1, and caused a red shift of the band gap energies calculated from UV-Vis spectra. The impedance plots at different temperature demonstrated that the boundary resistance was much larger than the grain resistance, and two activation energy values were obtained in different temperature range.
- Ce_1-xBi_xO_2-δ,
- hydrothermal method,
- spectrum,
- impedance
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