In situ templating synthesis of conic Ba0.5Sr 0.5Co0.8Fe0.2O3-δ perovskite at elevated temperature

Wei Zhou; Ran Ran; Zongping Shao; Wanqin Jin

doi:10.1007/s12034-009-0059-z

In situ templating synthesis of conic Ba_0.5Sr _0.5Co_0.8Fe_0.2O_3-δ perovskite at elevated temperature

Wei Zhou, Ran Ran, Zongping Shao, Wanqin Jin

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Conic Ba_0-5Sr_0-5Co_0-8Fe _0-2O_3-δ (BSCF) functional composite oxide was synthesized via a simple in situ templating process. The treatment of the solid precursor with concentrated nitric acid resulted in the mismatch of ionic radius at A-site and B-site of the ABO₃ perovskite, due to the oxidation of cobalt/iron ions, and the formation of Ba_0-5Sr_0-5(NO ₃)₂ solid solution. Therefore, instead of the direct formation of BSCF oxide, an intermediate phase of Ba_0-5Sr _0-5CoO₃ (BSC) in hexagonal lattice structure and with conic particle shape was preferentially formed during calcination at low temperature. BSCF perovskite was then produced by the in situ templating of BSC with iron diffusing into the BSC lattice during calcination at high temperature. Wellcrystallized BSCF particles in conic shape were obtained by the calcination of the nitric acid treated precursor at 900°C.

Original language	English
Pages (from-to)	407-412
Number of pages	6
Journal	Bulletin of Materials Science
Volume	32
Issue number	4
DOIs	https://doi.org/10.1007/s12034-009-0059-z
State	Published - Aug 2009

Keywords

Edta-citric acid
Nitric acid
Perovskite
Sol-gel
Synthesis

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title = "In situ templating synthesis of conic Ba0.5Sr 0.5Co0.8Fe0.2O3-δ perovskite at elevated temperature",

abstract = "Conic Ba0-5Sr0-5Co0-8Fe 0-2O3-δ (BSCF) functional composite oxide was synthesized via a simple in situ templating process. The treatment of the solid precursor with concentrated nitric acid resulted in the mismatch of ionic radius at A-site and B-site of the ABO3 perovskite, due to the oxidation of cobalt/iron ions, and the formation of Ba0-5Sr0-5(NO 3)2 solid solution. Therefore, instead of the direct formation of BSCF oxide, an intermediate phase of Ba0-5Sr 0-5CoO3 (BSC) in hexagonal lattice structure and with conic particle shape was preferentially formed during calcination at low temperature. BSCF perovskite was then produced by the in situ templating of BSC with iron diffusing into the BSC lattice during calcination at high temperature. Wellcrystallized BSCF particles in conic shape were obtained by the calcination of the nitric acid treated precursor at 900°C.",

keywords = "Edta-citric acid, Nitric acid, Perovskite, Sol-gel, Synthesis",

author = "Wei Zhou and Ran Ran and Zongping Shao and Wanqin Jin",

year = "2009",

month = aug,

doi = "10.1007/s12034-009-0059-z",

language = "英语",

volume = "32",

pages = "407--412",

journal = "Bulletin of Materials Science",

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TY - JOUR

T1 - In situ templating synthesis of conic Ba0.5Sr 0.5Co0.8Fe0.2O3-δ perovskite at elevated temperature

AU - Zhou, Wei

AU - Ran, Ran

AU - Shao, Zongping

AU - Jin, Wanqin

PY - 2009/8

Y1 - 2009/8

N2 - Conic Ba0-5Sr0-5Co0-8Fe 0-2O3-δ (BSCF) functional composite oxide was synthesized via a simple in situ templating process. The treatment of the solid precursor with concentrated nitric acid resulted in the mismatch of ionic radius at A-site and B-site of the ABO3 perovskite, due to the oxidation of cobalt/iron ions, and the formation of Ba0-5Sr0-5(NO 3)2 solid solution. Therefore, instead of the direct formation of BSCF oxide, an intermediate phase of Ba0-5Sr 0-5CoO3 (BSC) in hexagonal lattice structure and with conic particle shape was preferentially formed during calcination at low temperature. BSCF perovskite was then produced by the in situ templating of BSC with iron diffusing into the BSC lattice during calcination at high temperature. Wellcrystallized BSCF particles in conic shape were obtained by the calcination of the nitric acid treated precursor at 900°C.

AB - Conic Ba0-5Sr0-5Co0-8Fe 0-2O3-δ (BSCF) functional composite oxide was synthesized via a simple in situ templating process. The treatment of the solid precursor with concentrated nitric acid resulted in the mismatch of ionic radius at A-site and B-site of the ABO3 perovskite, due to the oxidation of cobalt/iron ions, and the formation of Ba0-5Sr0-5(NO 3)2 solid solution. Therefore, instead of the direct formation of BSCF oxide, an intermediate phase of Ba0-5Sr 0-5CoO3 (BSC) in hexagonal lattice structure and with conic particle shape was preferentially formed during calcination at low temperature. BSCF perovskite was then produced by the in situ templating of BSC with iron diffusing into the BSC lattice during calcination at high temperature. Wellcrystallized BSCF particles in conic shape were obtained by the calcination of the nitric acid treated precursor at 900°C.

KW - Edta-citric acid

KW - Nitric acid

KW - Perovskite

KW - Sol-gel

KW - Synthesis

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U2 - 10.1007/s12034-009-0059-z

DO - 10.1007/s12034-009-0059-z

M3 - 文章

AN - SCOPUS:70349586397

SN - 0250-4707

VL - 32

SP - 407

EP - 412

JO - Bulletin of Materials Science

JF - Bulletin of Materials Science

IS - 4

ER -

In situ templating synthesis of conic Ba_0.5Sr _0.5Co_0.8Fe_0.2O_3-δ perovskite at elevated temperature

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