A Study on the Application of Underwater Metal Ion Detection Sensor Using ITO Nanoparticle Printed Thin Film; [ITO 나노입자 필름을 이용한 수중 금속이온 검출 센서에 대한 연구ITO]

Abstract

In order to use heavy metals in water for detection, a film using ITO (Indium Tin Oxide) nanoparticles was produced, and a chemoresistive sensor was produced using it to confirm the metal ion detection performance. The ITO film was produced by mixing nanoparticles and organic binders to produce paste and printing it on a PET substrate. The sensor was manufactured by forming Ag electrodes on both ends of the manufactured film, and the detection characteristics of the sensor were confirmed using five (Mn, Zn, Se, Sn, Ni) metal ion aqueous solutions. It was verified that the sensor resistance linearly increased according to the increase in the concentration of the metal ion, and that the concentration and resistance change linearly. The sensor's performance was evaluated using the sensor's response (？足), limit of detection, response time, linearity, error, and detection range. ？ 2024 The Korean Physical Society. All rights reserved.