Synthesis of Nanosized Gadolinium Oxide


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Abstract

A method of obtaining nanoparticles of gadolinium oxide by the sol-gel method from a gadolinium nitrate solution is considered. The conditions of gadolinium oxide precipitation and the size of colloidal particles are determined. Using differential scanning calorimetry (DSC), the phase transitions of gadolinium hydroxide gel on cooling to a negative temperature followed by heating from –30 to 250°C and mass loss (88.4%) in the gel during the heating to 250°C are established. The dependence of the degree of conversion in the dehydration process on the temperature is found and the activation energy of this process is calculated (54.03 kJ/mol). The particle size after the gel calcination (8–16 nm) is estimated using the TEM method.

About the authors

S. I. Niftaliev

Voronezh State University of Engineering Technologies

Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

I. V. Kuznetsova

Voronezh State University of Engineering Technologies

Author for correspondence.
Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

I. A. Saranov

Voronezh State University of Engineering Technologies

Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

T. V. Zhundrikova

Voronezh State University of Engineering Technologies

Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

L. V. Lygina

Voronezh State University of Engineering Technologies

Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

V. Yu. Tuneekov

Voronezh State University of Engineering Technologies

Email: kuznetsovaiv@mail.ru
Russian Federation, Voronezh, 394036

I. V. Chislova

St. Petersburg State University

Email: kuznetsovaiv@mail.ru
Russian Federation, St. Petersburg, 199034

I. A. Zvereva

St. Petersburg State University

Email: kuznetsovaiv@mail.ru
Russian Federation, St. Petersburg, 199034

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