|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Symposium on Functional Nanomaterials: Discovery and Integration of Nanomaterials
||Sensing Properties of Nano RuO<sub>2</sub> in Amorphous Ta<sub>2</sub>O<sub>5</sub> to Hydrogen Phosphate and Hydrogen Carbonate Ions
||Ai Honda, Kenji Kawaguchi, Masatsugu Morimitsu
|On-Site Speaker (Planned)
The nano/amorphous hybrid catalyst consisting of nano RuO<sub>2</sub> particles dispersed in amorphous Ta<sub>2</sub>O<sub>5</sub> matrix was prepared by thermal decomposition method and was investigated as the new electrode’s material for electrochemical sensing to hydrogen phosphate and hydrogen carbonate ions. The size of the nano particles depended on the thermal decomposition temperature of the precursor solution containing Ru(III) and Ta(V) and was below 10 nm when the temperature was 280 <sup>o</sup>C or less. Such fine particles were highly sensitive to both ions and the linear relationship between the ion concentration and the oxidation current density was found. Electrochemical analysis revealed that the onset potential of the oxidation of hydrogen phosphate was less novel than that of hydrogen carbonate, suggesting that the individual quantification is possible by changing the detection potential, while the sensitivity of the catalyst for hydrogen phosphate was higher than that of hydrogen carbonate.
||Planned: Supplemental Proceedings volume