New synthetic routes for preparing perovskites: Electrochemical oxidation and oxidation by NO2

J. C. Grenier, J. P. Doumerc, Yuji Muraoka, S. Petit, M. Pouchard, A. Wattiaux

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Two new synthetic low temperature routes for preparing perovskite-related materials, especially metastable phases are depicted. The first one, the electrochemical oxidation, uses the electric field as the driving force for intercalating oxygen atoms within parent oxide networks. The reaction is achieved under anodic potential, in alkaline solution (1 M KOH or NaOH), at room temperature, in air. This process has been used for preparing various perovskite compounds such as AMO3 (A = Sr, La; M = Fe1-xCox) or A2MO4+δ (A = La, Nd, Sr). The most relevant results are reported. Potentiostatic and galvanostatic experiments have shown that the amount of intercalated oxygen can be controlled and that the process is reversible. Structural as well as electronic aspects of the oxygen intercalation are discussed and a reaction mechanism is proposed. The second route is based on the exothermic reaction of nitrogen dioxide NO2 with NH+ 4 ions at moderate temperatures (typically T < 300°C), which allowed the destruction of NH+ 4 cations in situ. Topotactic reactions are described for preparing new hexagonal forms of WO3 or MoO3. The reaction process is discussed.

Original languageEnglish
Pages (from-to)9-15
Number of pages7
JournalSolid State Ionics
Volume108
Issue number1-4
Publication statusPublished - May 1 1998
Externally publishedYes

Fingerprint

electrochemical oxidation
Electrochemical oxidation
perovskites
routes
Oxygen
Oxidation
Perovskite
oxidation
Nitrogen Dioxide
Exothermic reactions
Metastable phases
Intercalation
Temperature
Oxides
nitrogen dioxide
exothermic reactions
Cations
oxygen
Positive ions
Electric fields

Keywords

  • Ammonium deintercalation
  • Chimie Douce processes
  • Electrochemical oxidation
  • In situ nitrogen dioxide reaction
  • Oxygen intercalation

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Grenier, J. C., Doumerc, J. P., Muraoka, Y., Petit, S., Pouchard, M., & Wattiaux, A. (1998). New synthetic routes for preparing perovskites: Electrochemical oxidation and oxidation by NO2. Solid State Ionics, 108(1-4), 9-15.

New synthetic routes for preparing perovskites : Electrochemical oxidation and oxidation by NO2. / Grenier, J. C.; Doumerc, J. P.; Muraoka, Yuji; Petit, S.; Pouchard, M.; Wattiaux, A.

In: Solid State Ionics, Vol. 108, No. 1-4, 01.05.1998, p. 9-15.

Research output: Contribution to journalArticle

Grenier, JC, Doumerc, JP, Muraoka, Y, Petit, S, Pouchard, M & Wattiaux, A 1998, 'New synthetic routes for preparing perovskites: Electrochemical oxidation and oxidation by NO2', Solid State Ionics, vol. 108, no. 1-4, pp. 9-15.
Grenier JC, Doumerc JP, Muraoka Y, Petit S, Pouchard M, Wattiaux A. New synthetic routes for preparing perovskites: Electrochemical oxidation and oxidation by NO2. Solid State Ionics. 1998 May 1;108(1-4):9-15.
Grenier, J. C. ; Doumerc, J. P. ; Muraoka, Yuji ; Petit, S. ; Pouchard, M. ; Wattiaux, A. / New synthetic routes for preparing perovskites : Electrochemical oxidation and oxidation by NO2. In: Solid State Ionics. 1998 ; Vol. 108, No. 1-4. pp. 9-15.
@article{7be18231fde449a3985503a269cba9d1,
title = "New synthetic routes for preparing perovskites: Electrochemical oxidation and oxidation by NO2",
abstract = "Two new synthetic low temperature routes for preparing perovskite-related materials, especially metastable phases are depicted. The first one, the electrochemical oxidation, uses the electric field as the driving force for intercalating oxygen atoms within parent oxide networks. The reaction is achieved under anodic potential, in alkaline solution (1 M KOH or NaOH), at room temperature, in air. This process has been used for preparing various perovskite compounds such as AMO3 (A = Sr, La; M = Fe1-xCox) or A2MO4+δ (A = La, Nd, Sr). The most relevant results are reported. Potentiostatic and galvanostatic experiments have shown that the amount of intercalated oxygen can be controlled and that the process is reversible. Structural as well as electronic aspects of the oxygen intercalation are discussed and a reaction mechanism is proposed. The second route is based on the exothermic reaction of nitrogen dioxide NO2 with NH+ 4 ions at moderate temperatures (typically T < 300°C), which allowed the destruction of NH+ 4 cations in situ. Topotactic reactions are described for preparing new hexagonal forms of WO3 or MoO3. The reaction process is discussed.",
keywords = "Ammonium deintercalation, Chimie Douce processes, Electrochemical oxidation, In situ nitrogen dioxide reaction, Oxygen intercalation",
author = "Grenier, {J. C.} and Doumerc, {J. P.} and Yuji Muraoka and S. Petit and M. Pouchard and A. Wattiaux",
year = "1998",
month = "5",
day = "1",
language = "English",
volume = "108",
pages = "9--15",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier",
number = "1-4",

}

TY - JOUR

T1 - New synthetic routes for preparing perovskites

T2 - Electrochemical oxidation and oxidation by NO2

AU - Grenier, J. C.

AU - Doumerc, J. P.

AU - Muraoka, Yuji

AU - Petit, S.

AU - Pouchard, M.

AU - Wattiaux, A.

PY - 1998/5/1

Y1 - 1998/5/1

N2 - Two new synthetic low temperature routes for preparing perovskite-related materials, especially metastable phases are depicted. The first one, the electrochemical oxidation, uses the electric field as the driving force for intercalating oxygen atoms within parent oxide networks. The reaction is achieved under anodic potential, in alkaline solution (1 M KOH or NaOH), at room temperature, in air. This process has been used for preparing various perovskite compounds such as AMO3 (A = Sr, La; M = Fe1-xCox) or A2MO4+δ (A = La, Nd, Sr). The most relevant results are reported. Potentiostatic and galvanostatic experiments have shown that the amount of intercalated oxygen can be controlled and that the process is reversible. Structural as well as electronic aspects of the oxygen intercalation are discussed and a reaction mechanism is proposed. The second route is based on the exothermic reaction of nitrogen dioxide NO2 with NH+ 4 ions at moderate temperatures (typically T < 300°C), which allowed the destruction of NH+ 4 cations in situ. Topotactic reactions are described for preparing new hexagonal forms of WO3 or MoO3. The reaction process is discussed.

AB - Two new synthetic low temperature routes for preparing perovskite-related materials, especially metastable phases are depicted. The first one, the electrochemical oxidation, uses the electric field as the driving force for intercalating oxygen atoms within parent oxide networks. The reaction is achieved under anodic potential, in alkaline solution (1 M KOH or NaOH), at room temperature, in air. This process has been used for preparing various perovskite compounds such as AMO3 (A = Sr, La; M = Fe1-xCox) or A2MO4+δ (A = La, Nd, Sr). The most relevant results are reported. Potentiostatic and galvanostatic experiments have shown that the amount of intercalated oxygen can be controlled and that the process is reversible. Structural as well as electronic aspects of the oxygen intercalation are discussed and a reaction mechanism is proposed. The second route is based on the exothermic reaction of nitrogen dioxide NO2 with NH+ 4 ions at moderate temperatures (typically T < 300°C), which allowed the destruction of NH+ 4 cations in situ. Topotactic reactions are described for preparing new hexagonal forms of WO3 or MoO3. The reaction process is discussed.

KW - Ammonium deintercalation

KW - Chimie Douce processes

KW - Electrochemical oxidation

KW - In situ nitrogen dioxide reaction

KW - Oxygen intercalation

UR - http://www.scopus.com/inward/record.url?scp=0032070219&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032070219&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032070219

VL - 108

SP - 9

EP - 15

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 1-4

ER -