Effect of the Type of the Crystal Phase of In2O3 On Its Conductivity and Sensor Properties in Hydrogen Detection

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Abstract

Indium oxide is synthesized hydrothermally from an aqueous or alcoholic solution of indium nitrate. The phase composition and structure of the synthesized samples, as well as their conductivity and sensory response during the detection of hydrogen, are studied. A change in the conditions of hydrothermal synthesis leads to the formation of a metastable rhombohedral phase together with the main cubic phase of indium oxide. It is shown that an increase in the concentration of the rhombohedral phase in indium oxide leads to an increase in its conductivity and the maximum sensor activity for hydrogen.

About the authors

M. I. Ikim

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: ikimmary1104@gmail.com
Moscow, Russia

E. Yu. Spiridonova

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: ikimmary1104@gmail.com
Moscow, Russia

V. F. Gromov

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: ikimmary1104@gmail.com
Moscow, Russia

G. N. Gerasimov

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: ikimmary1104@gmail.com
Moscow, Russia

L. I. Trakhtenberg

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences; Moscow State University

Author for correspondence.
Email: ikimmary1104@gmail.com
Moscow, Russia; Moscow, Russia

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Copyright (c) 2023 М.И. Иким, Е.Ю. Спиридонова, В.Ф. Громов, Г.Н. Герасимов, Л.И. Трахтенберг