Electronic semiconducting oxides as pH sensors

Agner Fog; Richard P. Buck

doi:10.1016/0250-6874(84)80004-9

Electronic semiconducting oxides as pH sensors

Agner Fog, Richard P. Buck

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Abstract

Limitations on the response of electronically-conducting oxides as pH sensors are demonstrated PtO2, IrO2, RuO2, OsO2, Ta2O5 and TiO2 showed near-Nernstian behavior in the pH range 2 - 12 in air-saturated solutions. Interferences from selected reducing and oxidizing agents and from some complexing anions were measured and catalogued. No interference from monovalent cations (Group IA) was observed. Several reaction mechanisms are proposed and discussed.

Original language	English
Journal	Sensors and Actuators
Volume	5
Issue number	2
Pages (from-to)	137-146
ISSN	1054-6693
DOIs	https://doi.org/10.1016/0250-6874(84)80004-9
Publication status	Published - 1984
Externally published	Yes

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title = "Electronic semiconducting oxides as pH sensors",

abstract = "Limitations on the response of electronically-conducting oxides as pH sensors are demonstrated PtO2, IrO2, RuO2, OsO2, Ta2O5 and TiO2 showed near-Nernstian behavior in the pH range 2 - 12 in air-saturated solutions. Interferences from selected reducing and oxidizing agents and from some complexing anions were measured and catalogued. No interference from monovalent cations (Group IA) was observed. Several reaction mechanisms are proposed and discussed.",

author = "Agner Fog and {P. Buck}, Richard",

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AU - P. Buck, Richard

PY - 1984

Y1 - 1984

N2 - Limitations on the response of electronically-conducting oxides as pH sensors are demonstrated PtO2, IrO2, RuO2, OsO2, Ta2O5 and TiO2 showed near-Nernstian behavior in the pH range 2 - 12 in air-saturated solutions. Interferences from selected reducing and oxidizing agents and from some complexing anions were measured and catalogued. No interference from monovalent cations (Group IA) was observed. Several reaction mechanisms are proposed and discussed.

AB - Limitations on the response of electronically-conducting oxides as pH sensors are demonstrated PtO2, IrO2, RuO2, OsO2, Ta2O5 and TiO2 showed near-Nernstian behavior in the pH range 2 - 12 in air-saturated solutions. Interferences from selected reducing and oxidizing agents and from some complexing anions were measured and catalogued. No interference from monovalent cations (Group IA) was observed. Several reaction mechanisms are proposed and discussed.

U2 - 10.1016/0250-6874(84)80004-9

DO - 10.1016/0250-6874(84)80004-9

M3 - Journal article

SN - 1054-6693

VL - 5

SP - 137

EP - 146

JO - Sensors and Actuators

JF - Sensors and Actuators

IS - 2

ER -

Electronic semiconducting oxides as pH sensors

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