Performance of IrO<sub>x</sub> pH Sensor Prepared by Electrochemical and Thermal Oxidation

Liu, Xinyu; Pei, Yunxia; Wang, Yuanxia; Liu, Xiangju; Chen, Xuwei; Sun, Congtao; Liu, Nazhen

doi:10.1109/jsen.2022.3178995

Cited by 7 publications

(1 citation statement)

References 47 publications

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“…Meanwhile, the developed RuO 2 material compensated for some shortcomings of the IrO 2 material in terms of electrode precision and cost. 20 Compared with other coating methods, such as thermal oxidation, 33 sputtering deposition, 20 and the sol–gel method, 34 electrodeposition is an inexpensive and simple method to prepare IrO 2 and RuO 2 electrodes, 33,35 but electrodeposition of iridium–ruthenium oxide pH electrodes on titanium substrates has rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

Hu,

Diao,

Cui

et al. 2024

Analyst

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Section: Introductionmentioning

confidence: 99%

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

Hu,

Diao,

Cui

et al. 2024

Analyst

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Assessing tungsten-based electrodes coated with W and Ce oxides for pH sensing applications

Díaz-Ballote,

Vega-Lizama,

López

et al. 2024

J Solid State Electrochem

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This study assessed tungsten-based materials with and without dispersed CeO2 for potential use as pH sensors. Specifically, three types of tungsten electrodes were characterized: tungsten electrodes without CeO2 but with native oxide, tungsten electrodes without CeO2 that were oxidized, and a tungsten electrode containing dispersed CeO2 that was oxidized, resulting in a mixture of WO3, CeO2, and Ce2O3. The characterization was performed using SEM/EDAX, X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The oxide coatings showed higher oxygen contents compared to native tungsten. XPS confirmed the presence of a thick layer of WO3 and cerium oxides. The electrodes exhibited good reproducibility and stability in pH measurements. A linear relationship was found between the open circuit potential and pH, with slopes of 44.9, 40.8, and 46.9 mV pH−1 for native oxide, WO3, and WO3 with CeO2 and Ce2O3, respectively. The latter showed the highest sensitivity and lowest hysteresis. The response times ranged from 14.5–23.5 s and were faster in acidic solutions. Overall, the inexpensive tungsten-based electrodes demonstrated promising capabilities for pH sensing, but in particular ceriated tungsten electrodes.

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In-situ monitoring of pH and Cl− concentration and rebar corrosion at the rebar/mortar interface

Wang,

Liu,

Liu

et al. 2023

Construction and Building Materials

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Performance of IrO_x pH Sensor Prepared by Electrochemical and Thermal Oxidation

Cited by 7 publications

References 47 publications

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

Assessing tungsten-based electrodes coated with W and Ce oxides for pH sensing applications

In-situ monitoring of pH and Cl− concentration and rebar corrosion at the rebar/mortar interface

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Performance of IrOx pH Sensor Prepared by Electrochemical and Thermal Oxidation

Cited by 7 publications

References 47 publications

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

An electrochemically cleanable pH electrode based on an electrodeposited iridium oxide–ruthenium oxide–titanium composite

Assessing tungsten-based electrodes coated with W and Ce oxides for pH sensing applications

In-situ monitoring of pH and Cl− concentration and rebar corrosion at the rebar/mortar interface

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Performance of IrO_x pH Sensor Prepared by Electrochemical and Thermal Oxidation