XRD and Raman spectroscopy study of Fe solubility in cerium oxide

L. Zhao, S. R. Bishop, J. Hyodo, T. Ishihara, K. Sasaki

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The solubility of Fe in CeO2 was investigated for 3-50 mol% Fe. Powders were synthesized by the Pechini method in air. Raman spectroscopy and lattice parameter analysis revealed that the solubility limit of Fe in CeO 2 is less than 3 mol% for the present preparation conditions. The low solubility limit was rationalized in terms of the much smaller ionic radius of Fe versus Ce. As a consequence, an approach to increase the Fe radii size through annealing in reducing conditions (humidified H2 at 1100 °C) was attempted. In this case, the more stable CeFeO3 phase was observed by XRD, thereby indicating difficulty in obtaining Fe doped CeO 2 under reducing conditions, as well.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalECS Transactions
Volume50
Issue number40
DOIs
Publication statusPublished - Dec 1 2012

Fingerprint

Cerium
Raman spectroscopy
Solubility
Oxides
Lattice constants
Annealing
Powders
Air

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

XRD and Raman spectroscopy study of Fe solubility in cerium oxide. / Zhao, L.; Bishop, S. R.; Hyodo, J.; Ishihara, T.; Sasaki, K.

In: ECS Transactions, Vol. 50, No. 40, 01.12.2012, p. 53-58.

Research output: Contribution to journalArticle

Zhao, L. ; Bishop, S. R. ; Hyodo, J. ; Ishihara, T. ; Sasaki, K. / XRD and Raman spectroscopy study of Fe solubility in cerium oxide. In: ECS Transactions. 2012 ; Vol. 50, No. 40. pp. 53-58.
@article{f32f8f20b9cc4ff7b44dd2422b683855,
title = "XRD and Raman spectroscopy study of Fe solubility in cerium oxide",
abstract = "The solubility of Fe in CeO2 was investigated for 3-50 mol{\%} Fe. Powders were synthesized by the Pechini method in air. Raman spectroscopy and lattice parameter analysis revealed that the solubility limit of Fe in CeO 2 is less than 3 mol{\%} for the present preparation conditions. The low solubility limit was rationalized in terms of the much smaller ionic radius of Fe versus Ce. As a consequence, an approach to increase the Fe radii size through annealing in reducing conditions (humidified H2 at 1100 °C) was attempted. In this case, the more stable CeFeO3 phase was observed by XRD, thereby indicating difficulty in obtaining Fe doped CeO 2 under reducing conditions, as well.",
author = "L. Zhao and Bishop, {S. R.} and J. Hyodo and T. Ishihara and K. Sasaki",
year = "2012",
month = "12",
day = "1",
doi = "10.1149/05040.0053ecst",
language = "English",
volume = "50",
pages = "53--58",
journal = "ECS Transactions",
issn = "1938-5862",
publisher = "Electrochemical Society, Inc.",
number = "40",

}

TY - JOUR

T1 - XRD and Raman spectroscopy study of Fe solubility in cerium oxide

AU - Zhao, L.

AU - Bishop, S. R.

AU - Hyodo, J.

AU - Ishihara, T.

AU - Sasaki, K.

PY - 2012/12/1

Y1 - 2012/12/1

N2 - The solubility of Fe in CeO2 was investigated for 3-50 mol% Fe. Powders were synthesized by the Pechini method in air. Raman spectroscopy and lattice parameter analysis revealed that the solubility limit of Fe in CeO 2 is less than 3 mol% for the present preparation conditions. The low solubility limit was rationalized in terms of the much smaller ionic radius of Fe versus Ce. As a consequence, an approach to increase the Fe radii size through annealing in reducing conditions (humidified H2 at 1100 °C) was attempted. In this case, the more stable CeFeO3 phase was observed by XRD, thereby indicating difficulty in obtaining Fe doped CeO 2 under reducing conditions, as well.

AB - The solubility of Fe in CeO2 was investigated for 3-50 mol% Fe. Powders were synthesized by the Pechini method in air. Raman spectroscopy and lattice parameter analysis revealed that the solubility limit of Fe in CeO 2 is less than 3 mol% for the present preparation conditions. The low solubility limit was rationalized in terms of the much smaller ionic radius of Fe versus Ce. As a consequence, an approach to increase the Fe radii size through annealing in reducing conditions (humidified H2 at 1100 °C) was attempted. In this case, the more stable CeFeO3 phase was observed by XRD, thereby indicating difficulty in obtaining Fe doped CeO 2 under reducing conditions, as well.

UR - http://www.scopus.com/inward/record.url?scp=84885775354&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84885775354&partnerID=8YFLogxK

U2 - 10.1149/05040.0053ecst

DO - 10.1149/05040.0053ecst

M3 - Article

AN - SCOPUS:84885775354

VL - 50

SP - 53

EP - 58

JO - ECS Transactions

JF - ECS Transactions

SN - 1938-5862

IS - 40

ER -