A ruthenium oxide and iridium oxide coated titanium electrode for pH measurement.

ABSTRACT: This paper reports the pH sensing capability of a ruthenium oxide (RuO₂) and iridium oxide (IrO₂) coated titanium (ROIOT) electrode. The characterization results indicated that the ROIOT electrode had a cracked morphology. The RuO₂ and IrO₂ particles were decorated on the surface of the electrode. The ROIOT electrode showed near-Nernstian sensitivity of -50.8 mV pH^-1, with a wide detection range of pH 2-12. The response time was 4.0-13.5 s, which was fast and very sensitive to the pH change. The ROIOT electrode also demonstrated great detection reversibility and stability in various pH conditions. In the long-term experiment of 30 d, potential measurements using the ROIOT electrode had a minor fluctuation of 1.5 mV d^-1. The

SUBMITTER: Liu B 

PROVIDER: S-EPMC9055342 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature