H. B. KUSHKHOV ET AL.
OPEN ACCESS MSCE
washing was the washing in distilled water, post-treat-
ment with ammonium hydroxide solution and washing
by KF than distilled water by decantation and centrifuga-
tion then by washing with double-distilled water.
Thus, to obtain reliable information on the phase
composition of the synthesized compounds by electroly-
sis and the possibility of direct electrochemical synthesis
CeB6 nanotubes in halide melts.
5. Conclusion
The joint electroreduction of tetrafluorborate and ce-
rium-ions was conducted in equmolar NaCl-KCl melt on
tungsten electrode at 973 K by cyclic voltammetry. The
analysis of voltammograms was shown that the electro-
synthesis in studied systems proceeds in the kinetic mode
because reducing potentials of boron and cerium is very
different. The resul ts of this research found that under
certain conditions, the concentrations of cerium and bo-
ron and certain anionic composition of the melt are pos-
sible for their joint electroreduction.
Synthesis of cerium borides nanotubes was carried out
by potentiostatic electrolysis of molten KCl-NaCl, con-
taining CeCl3 and KBF4. Electrolysis performed on tung-
sten electrode in the range of −2.4 to −2.8 V relatively of
the quasi-stationary glassy-carbon electrode. The influ-
ence of the electrolyte composition, temperature, current
density, voltage and the duration of electrolysis on the
synthesis products was studied. An optimal parameter for
getting cerium boride CeB6 nanotubes was found.
Acknowled gements
The work was done using equipment of Access Center
“X-ray diagnosis of materials” with the financial support
of the Ministry of Education and Science of Russian Fed-
eration, the state contract No. 16552.11.7074.
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