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http://dx.doi.org/10.14478/ace.2021.1052

Fabrication of Potentiometric Sodium-ion Sensor Based on Carbon and Silver Inks and its Electrochemical Characteristics  

Kim, Seo Jin (Department of Chemical Engineering, Kangwon National University)
Son, Seon Gyu (Department of Chemical Engineering, Kangwon National University)
Yoon, Jo Hee (Department of Chemical Engineering, Kangwon National University)
Choi, Bong Gill (Department of Chemical Engineering, Kangwon National University)
Publication Information
Applied Chemistry for Engineering / v.32, no.4, 2021 , pp. 456-460 More about this Journal
Abstract
A potentiometric sodium-ion (Na+) sensor was prepared using a screen-printing process with carbon and silver inks. The two-electrode configuration of the sensor resulted in potential differences in Na+ solutions according to Nernstian equation. The obtained Na+-sensor exhibited an ideal Nernstian sensitivity, fast response time, and low limit of detection. The Nernstian response was stable when the sensor was tested for repeatability and long-term durability. The Na+-selective membrane coated onto the carbon electrode selectively passed sodium ions against interfering ions, indicating an excellent selectivity. The portable Na+-sensor was finally fabricated using a printed circuit system, demonstrating the successful measurements of Na+ concentrations in various real samples.
Keywords
Electrolyte ion sensor; Electrochemistry; Ink; Screen printing; Sodium;
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