Preparation of layered perovskite-type cuprate thick-film electrode by electrophoretic deposition method and its nitrite-ion sensing properties

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  • MORIYAMA Mikako
    Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology
  • SHIMOJI Haruna
    Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology
  • SHINODA Yasunari
    Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology
  • TAKASE Satoko
    Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology
  • IBRAHIM Norahim
    Department of Biosciences, Faculty of Sciences, Universiti Teknologi Malaysia
  • SHIMIZU Youichi
    Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology

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<p>Detection of nitrite-ion has become very important for various industrial fields due to its wide application range such as food additives and a rust preventive agent for steels. In this study, we attempted at developing an advanced method to produce layered perovskite-type cuprates based thick-film device for highly sensitive electrochemical sensor for nitrite-ion with a capacity of wide concentration range. Here, layered perovskite-type oxide powders could be synthesized by a polymer precursor method which was deposited on alumina supports with gold electrode by an electrophoretic deposition method. The sensor performance was measured by an amperometric method for nitrite-ion detection. It was found that the Gd2CuO4-based electrode showed fast and good linear responses to nitrite-ion for a wide range of concentration.</p>

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