Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Conductive Polymer Nanoparticles as Solid Contact in Ion-Selective Electrodes Sensitive to Potassium Ions
oleh: Hui Bao, Jin Ye, Xuyan Zhao, Yuan Zhang
Format: | Article |
---|---|
Diterbitkan: | MDPI AG 2023-04-01 |
Deskripsi
A preparation method of nanocomposites based on poly (3-octylthiophene-2,5-diyl) (POT) and carbon black (CB) as the transducer of an all-solid potassium ion selective electrode is proposed. POT is used as the dispersant of CB, and the obtained nanocomposites have unique characteristics, including high conductivity, high capacitance and high stability. The potassium ion selective electrode based on POT and CB was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronopotentiometry. The results showed that the detection limit of potassium ions was 10<sup>−6.2</sup> M, and the slope was 57.6 ± 0.8 mV/façade. The water layer test and anti-interference test show that the electrode has high hydrophobicity, the static contact angle reaches 139.7° and is not easily affected by light, O<sub>2</sub> and CO<sub>2</sub>.