Electrodeposition of iridium oxide nanoparticles for pH Sensing Electrodes

Munawar Khalil, Sai Wang, Jianjia Yu, Robert L. Lee, Ning Liu

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


This paper reports the results of an experiment on the synthesis and electrodeposition of iridium oxide nanoparticles for the fabrication of a pH sensor. Iridium oxide nanoparticles with mean diameter in the range of 1-2 nm were successfully synthesized and electrodeposited on stainless steel substrate by cyclic voltammetry. It was observed that the surface of the deposited iridium oxide film exhibited porous and rough surface morphology. The iridium oxide electrode thus prepared displayed excellent pH sensitivity, obtaining super-Nernstian behavior with pH sensitivity value of -72.6 mV/pH.

Original languageEnglish
Pages (from-to)B485-B490
JournalJournal of the Electrochemical Society
Issue number9
Publication statusPublished - 2016


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