Efficient gas sensitivity in mixed bismuth ferrite micro (cubes) and nano (plates) structures

Shivaji D. Waghmare, Vijaykumar V. Jadhav, Shaym K. Gore, Seog Joon Yoon, Swapnil B. Ambade, B. J. Lokhande, Rajaram S. Mane*, Sung Hwan Han

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Mixed micro (cubes) and nano (plates) structures of bismuth ferrite (BFO) have been synthesized by a simple and cost-effective wet-chemical method. Structural, morphological and phase confirmation characteristics are measured using X-ray diffraction, field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray analysis techniques. The digital FE-SEM photo-images of BFO sample confirmed an incubation of discrete micro-cubes into thin and regularly placed large number of nano-plates. The bismuth ferrite, with mixed structures, films show considerable performance when used in liquefied petroleum (LPG), carbon dioxide (CO 2) and ammonium (NH 3) gas sensors application. Different chemical entities in LPG have made it more efficient with higher sensitivity, recovery and response times compared to CO 2 and NH 3 gases. Furthermore, effect of palladium surface treatment on the gas sensitivity and the charge transfer resistances of BFO mixed structures is investigated and reported.

Original languageEnglish
Pages (from-to)4169-4173
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number12
DOIs
StatePublished - Dec 2012
Externally publishedYes

Keywords

  • A. Oxides
  • B. Chemical synthesis
  • C. Impedance spectroscopy
  • C. Surface properties

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