Bulletin of Materials Science

, Volume 33, Issue 4, pp 371–376

Synthesis of nano-particle and highly porous conducting perovskites from simple in situ sol-gel derived carbon templating process

  • Wei Zhou
  • Ran Ran
  • Zongping Shao
  • Wanqin Jin
  • Nanping Xu
Article

Abstract

Nano-sized La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) and La0.8Sr0.2MnO3−δ (LSM) oxides were synthesized by a simple in situ sol-gel derived carbon templating process. Nano-sized LSCF-carbon and LSM-carbon composites were first obtained with a grain size of 20–30 nm. Further calcination of the obtained composites under air resulted in the nano-sized pure-phase perovskites with crystalline size of as small as 14 nm. Such a decrease in crystalline size of perovskite via the indirect calcination process was ascribed to the suppressing effect of carbon in the grain growth of perovskite. Furthermore, when the in situ created carbon was applied as a template for pore forming, a highly porous perovskite sintering body packing from the nano-sized perovskite oxide was obtained.

Keywords

Perovskite EDTA-citrate sol-gel carbon template porous ceramics 

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Copyright information

© Indian Academy of Sciences 2010

Authors and Affiliations

  • Wei Zhou
    • 1
  • Ran Ran
    • 1
  • Zongping Shao
    • 1
  • Wanqin Jin
    • 1
  • Nanping Xu
    • 1
  1. 1.State Key Laboratory of Materials-oriented Chemical EngineeringNanjing University of TechnologyNanjing, JiangSuP.R. China

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