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

Title
Efficient gas sensitivity in mixed bismuth ferrite micro (cubes) and nano (plates) structures
Authors
한성환
Keywords
Oxides; Chemical synthesis; Surface properties; Impedance spectroscopy
Issue Date
2012-09
Publisher
Elsevier Science LTD,
Citation
Materials Research Bulletin, Dec 2012, 47(12), P.4169-4173
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 nanoplates. The bismuth ferrite, with mixed structures, films show considerable performance when used in liquefied petroleum (LPG), carbon dioxide (COD and ammonium (NH3) gas sensors application. Different chemical entities in LPG have made it more efficient with higher sensitivity, recovery and response times compared to CO2 and NH3 gases. Furthermore, effect of palladium surface treatment on the gas sensitivity and the charge transfer resistances of BFO mixed structures is investigated and reported.
URI
https://www.sciencedirect.com/science/article/pii/S0025540812006599?via%3Dihub
ISSN
0025-5408; 1873-4227
DOI
http://dx.doi.org/10.1016/j.materresbull.2012.08.078
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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