Manufacture and application of RuO2 solid-state metal-oxide pH sensor to common beverages

Authors/Creators

Wade Lonsdale, Edith Cowan UniversityFollow
Magdalena Wajrak, Edith Cowan UniversityFollow
Kamal Alameh, Edith Cowan UniversityFollow

Abstract

A new reproducible solid-state metal-oxide pH sensor for beverage quality monitoring is developed and characterised. The working electrode of the developed pH sensor is based on the use of laser-etched sputter-deposited RuO₂ on Al₂O₃ substrate, modified with thin layers of sputter-deposited Ta₂O₅ and drop-cast Nafion for minimisation of redox interference. The reference electrode is manufactured by further modifying a working electrode with a porous polyvinyl butyral layer loaded with fumed SiO₂. The developed pH sensor shows excellent performance when applied to a selection of beverage samples, with a measured accuracy within 0.08 pH of a commercial glass pH sensor.

Document Type

Journal Article

Date of Publication

2018

Publication Title

Talanta

Publisher

Elsevier BV

School

School of Science

RAS ID

27879

Related Publications

Lonsdale, W. (2018). Development, manufacture and application of a solid-state pH sensor using ruthenium oxide. Retrieved from http://ro.ecu.edu.au/theses/2095

Comments

Lonsdale, W., Wajrak, M., & Alameh, K. (2018). Manufacture and application of RuO2 solid-state metal-oxide pH sensor to common beverages. Talanta, 180, 277-281. Available here

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