Preparation of Perovskite-Type Oxide Thick-Film Device by EPD Method and its Application for Electrochemical Hydrogen-Phosphate Ion Sensor

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Perovskite-type oxide (LaCoO3) fine powders were prepared by a polymer precursors (PP) methods at 300~500°C. The LaCoO3 fine powder could be prepared at 380°C when the use of EDA and PEG for organic-and polymer-additives, respectively. The surface area of LCO was ca. 39m2/g. LCO thick-film could be prepared from the steady state suspension with the addition of AcAc or PVAby the EPD method at +10V, 3min.The current density of the LaCoO3 film sensor was changed with changing HPO42- concentration at +1.00 V vs. SCE. The device showed relatively good amperometoric response to H2PO4- from 1.0x10-5M to 1.0x10-3M with the 90% response time of ca 2min. The LaCoO3-based sensor also showed a good selectivity among the examined anions of NO3-, Cl- and SCN-.

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Periodical:

Edited by:

A. R. Boccaccini, O. Van der Biest, R. Clasen and J.H. Dickerson

Pages:

215-219

Citation:

T. Inagaki et al., "Preparation of Perovskite-Type Oxide Thick-Film Device by EPD Method and its Application for Electrochemical Hydrogen-Phosphate Ion Sensor", Key Engineering Materials, Vol. 507, pp. 215-219, 2012

Online since:

March 2012

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$38.00

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