Preparation, structure and photocatalytic activity of nanocomposites based on cerium oxide-Reference-Cited by-同舟云学术

Preparation, structure and photocatalytic activity of nanocomposites based on cerium oxide

Published:2022-11-28 Issue:4 Volume:58 Page:351-359
ISSN:2524-2342
Container-title:Proceedings of the National Academy of Sciences of Belarus, Chemical Series
language:
Short-container-title:Vescì Akademìì navuk Belarusì. Seryâ himičnyh navuk

Author:

Matsukevich I. V.¹,Yundel E. D.²,Kulinich N. V.¹,Yahorava Y. A.³,Kulbitskaya L. V.¹,Kuznetsova T. F.¹

Affiliation:

1. Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus

2. Belarusian State Technological University

3. Physical-Technical Institute, National Academy of Sciences of Belarus

Abstract

Mesoporous CeO2 and MgO powders and nanocomposites based on them were synthesized by the method of self-propagating high-temperature synthesis, and the mutual influence of magnesium oxide and cerium oxide on the crystal structure, microstructure, and morphology of the obtained materials was studied. It has been established that CeO2 is formed on the surface of magnesium oxide, while the developed surface of the material is preserved. It has been established, that the sizes of CeO2 crystallites in the composition of nanocomposites change insignificantly and range from 6.5 to 7.4 nm, while the values of the specific surface area and average pore diameter of the studied samples depend on the composition and vary in the ranges of 19–41 m2/g and 11.9‒19 nm, respectively. The highest efficiency of photodegradation of dyes of acid telon blue and direct bright blue is observed for samples of MgO–CeO2 (30 mol.%) and MgO–CeO2 (50 mol.%) ‒ 98.5 and 92.5 %, respectively, taking into account the effect of direct photolytic decomposition under the influence of ultraviolet radiation.

Publisher

Publishing House Belorusskaya Nauka

Subject

Inorganic Chemistry,Organic Chemistry,Chemistry (miscellaneous),Analytical Chemistry

Reference28 articles.

1. Klochkov V. K., Malyukin Y. V., Grygorova G. V., Sedyh O. O., Kavok N. S., Seminko V. V., Semynozhenko V. P. Oxidation-reduction processes in CeO2-x nanocrystals under UV irradiation. Journal of Photochemistry and Photobiology A: Chemistry, 2018, vol. 364, pp. 282–287. https://doi.org/10.1016/j.jphotochem.2018.06.025

2. Deshpande S., Patil S., Kuchibhatla S. V. N. T., Seal S. Size dependency variation in lattice parameter and valency states in nanocrystalline cerium oxide. Applied Physics Letters, 2005, vol. 87, pp.133113–133113-3. https://doi.org/10.1063/1.2061873

3. Kabir A., Zhang H., Esposito V. Mass diffusion phenomena in cerium oxide. Cerium Oxide (CeO2): Synthesis, Properties and Applications. Elsevier, 2020. pp. 169–210. https://doi.org/10.1016/b978-0-12-815661-2.00005-0

4. Chen J., Zhu J., Zhan Y., Lin X., Cai G., Wei K., Zheng Q. Characterization and catalytic performance of Cu/CeO2 and Cu/MgO–CeO2 catalysts for NO reduction by CO. Applied Catalysis A: General, 2009, vol. 363, no. 1-2, pp. 208– 215. https://doi.org/10.1016/j.apcata.2009.05.017

5. Tsoncheva T., Ivanova L., Minchev C., Froba M. Cobalt-modified mesoporous MgO, ZrO2, and CeO2 oxides as catalysts for methanol decomposition. Journal of Colloid and Interface Science, 2009, vol. 333, no. 1, pp. 277–284. https://doi.org/10.1016/j.jcis.2008.12.070