Fabrication and Characterization of Iridium Oxide pH Microelectrodes Based on Sputter Deposition Method.
Sensors (Basel)
; 21(15)2021 Jul 23.
Article
em En
| MEDLINE
| ID: mdl-34372233
ABSTRACT
pH value plays an important role in many fields such as chemistry and biology; therefore, rapid and accurate pH measurement is very important. Because of its advantages in preparation, wide test range, rapid response, and good biocompatibility, iridium oxide material has received more and more attention. In this paper, we present a method for preparing iridium oxide pH microelectrodes based on the sputter deposition method. The sputtering parameters of iridium oxide are also studied and optimized. Open-circuit potential tests show that microelectrodes exhibit near-Nernstian pH response with good linearity (about 60 mV/pH), fast response, high stability (a slight periodic fluctuation of potential change <2.5 mV in 24 h), and good reversibility in the pH range of 1.00-13.00.
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Base de dados:
MEDLINE
Assunto principal:
Irídio
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article