Electrocatalysts Based on Platinized Titanium Dioxide Doped with Ruthenium for Hydrogen and Carbon-Monoxide Potentiometric Sensors.

Autor:	Belmesov, A. A., Shmygleva, L. V., Romanova, N. V., Galin, M. Z., Levchenko, A. V.
Předmět:	CARBON monoxide detectors HYDROGEN detectors GAS detectors RUTHENIUM oxides TITANIUM oxides RUTILE
Zdroj:	Russian Journal of Electrochemistry; Sep2024, Vol. 60 Issue 9, p699-710, 12p
Abstrakt:	The electrocatalysts based on platinized TiO2(Ru) oxides with different ruthenium content are studied as the working electrode in solid-state potentiometric sensors for H2 and CO. Increasing the ruthenium content does not affect the size of platinum particles, but reduces its content in the metallic state. The results of X-ray diffraction, X-ray fluorescence, and scanning electron microscopic studies are presented. The synthesized electrocatalysts are tested as the working-electrode materials in hydrogen and carbon monoxide sensors for the gas concentration in the air flow from 1 to 50 000 ppm. The characteristics of the sensors are shown to depend on the oxide support composition and structure. The electrocatalysts with the rutile structure are recommended for the practical use; the ruthenium content is determined by the range of analyzed CO concentrations. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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