Paper Title:
Structure and CO Gas Sensing Properties of PPy/LaFeO3 Nanocomposites
  Abstract

In this paper, perovskite LaFeO3 nanoparticles were synthesised by a sol-gel method. Then, polypyrrole (PPy)/LaFeO3 nanocomposites were prepared by a simple in situ chemical polymerization method. By means of X-ray diffraction (XRD), Fourier transform infrared (FTIR) and scanning electron microscopy (SEM), the microstructure of PPy/LaFeO3 nanocomposites was characterized. The XRD patterns indicated that LaFeO3 nanoparticles have a perovskite phase with orthorhombic structure, and incorporation of PPy did not change the crystalline structure of LaFeO3. The PPy was evenly dispersed on the surface of LaFeO3 particles, which was endorsed by FTIR spectral analyses. And SEM images indicate that the PPy was evenly dispersed on the surface of LaFeO3 particles without apparent agglomeration. And we found that the nanocomposites exhibited a higher response to CO gas.

  Info
Periodical
Materials Science Forum (Volumes 675-677)
Edited by
Yi Tan and Dongying Ju
Pages
375-378
DOI
10.4028/www.scientific.net/MSF.675-677.375
Citation
P. Song, Q. Wang, "Structure and CO Gas Sensing Properties of PPy/LaFeO3 Nanocomposites", Materials Science Forum, Vols. 675-677, pp. 375-378, 2011
Online since
February 2011
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