Phosphate Sensors Based On Co-Cu Electrodes Fabricated With A Sacrificial Glass Fiber Paper Template

Keywords

amperometric; Co-Cu electrode; oxygen interference; Phosphate; sacrificial glass fiber template

Abstract

Phosphate contamination of surface water systems, originating from fertilizer runoff, can lead to eutrophication and other environmental problems. There are increasing demands for preventive in situ phosphate monitoring systems and various types of electrochemical phosphate sensors have been developed. However, their complex fabrication processes, instability, and oxygen interferences impose significant challenges on practical implementation. We report a surface textured Co-Cu electrode-based phosphate sensor fabricated by pulsed electroplating (PEP) using a sacrificial glass fiber paper template. Cyclic voltammetry (CV) tests in oxygenated and deoxygenated aqueous solutions were used to determine the optimum applied potential to eliminate oxygen interference. The developed phosphate sensor showed a linear amperometric response to phosphate solutions (pH 4.0, 0.05M KHP) in the concentration range of 10-5 to 10-2M with good stability and relatively short response time (<30s).

Publication Date

12-31-2015

Publication Title

2015 IEEE SENSORS - Proceedings

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ICSENS.2015.7370475

Socpus ID

84963512369 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84963512369

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