pp. 171-180
S&M555 Research Paper in Biosensors and Related Areas Published: 2004 Sol-Gel Synthesis of Perovskite-Type Oxide Thin-Film Using Metal Organic Acid and Its Application to Amperometric Hydrogen-Phosphate Ion Sensor [PDF] Keiko Tsuchida, Satoko Takase and Youichi Shimizu (Received Januray 8, 2004; Accepted May 6, 2004) Keywords: perovskite-type oxide, thin-film, metal organic-acid, sol-gel, spin-coating, hydrogenphosphate ion, sensor
The synthesis of La-based perovskite-type oxide (LaBO3: B = V, Mn, Fe, Co, Ni) thinfilms by a sol-gel method using metal organic acids, and their amperometric sensing properties for hydrogen-phosphate ions were investigated. La-based perovskite-type oxide thin-films could be easily synthesized at 600–700℃ on Au-coated alumina substrates. Particularly, the LaCoO3 thin-film prepared at 700℃ showed good amperometric responses to HPO42– at a concentration between 1.0×10–6 and 1.0×10–2 M with a sensitivity of 20 mA. cm–2M–1, when the applied potential was +1.0 V vs. SCE at 30℃. The 90% response time of the sensor device was as short as approximately 3 min, and showed a high selectivity to HPO42– among the examined anions of NO3 –, Cl– and SCN–.
Corresponding author: Youichi ShimizuCite this article Keiko Tsuchida, Satoko Takase and Youichi Shimizu, Sol-Gel Synthesis of Perovskite-Type Oxide Thin-Film Using Metal Organic Acid and Its Application to Amperometric Hydrogen-Phosphate Ion Sensor, Sens. Mater., Vol. 16, No. 3, 2004, p. 171-180. |