Effect of Ce cations on the crystallite size and pore structure genesis in nanostructured rutile after calcination
https://doi.org/10.17586/2220-8054-2018-9-5-688-695
Abstract
A method for the low-temperature synthesis of titania with the 3D rutile nanostructure was developed, and the effect of introduced cerium ions on the thermal stability of the material was studied. According to XRD, TEM, Raman spectroscopy and BET data, the introduction of 3 – 10 wt.% Ce into the rutile matrix decreases the growth of nanorutile crystallites under the action of high temperatures ranging from 300 – 1000 ◦C and provides the formation of a more porous structure in comparison with unmodified samples. Cerium cations are stabilized in the region of interblock boundaries or in the structural defects of rutile TiO2 and are released as the bulk CeO2 phase only at 1000 ◦C, which does not exert a stabilizing effect at this temperature.
Keywords
titanium dioxide,
nanostructured rutile,
hierarchical architecture,
porous structure,
thermal treatmen
Supporting agencies: This work was conducted within the framework of the budget project # AAAA-A17-117041710090-3 for Boreskov Institute of Catalysis.
About the Authors
N. V. Shikina
Boreskov Institute of Catalysis SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk
E. V. Bessudnova
Boreskov Institute of Catalysis SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk
V. A. Ushakov
Boreskov Institute of Catalysis SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk
A. P. Nikitin
Institute of Coal Chemistry and Materials Science, Federal Research Center of Coal and Coal Chemistry SB RAS
Russian Federation
Russian Federation
18 Sovetskiy pr., 650000, Kemerovo
M. S. Mel’gunov
Boreskov Institute of Catalysis SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk
A. V. Ishchenko
Boreskov Institute of Catalysis SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk
Z. R. Ismagilov
Boreskov Institute of Catalysis SB RAS; Institute of Coal Chemistry and Materials Science, Federal Research Center of Coal and Coal Chemistry SB RAS
Russian Federation
Russian Federation
5 Lavrentiev Ave., 630090, Novosibirsk; 18 Sovetskiy pr., 650000, Kemerovo
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Review
For citations:
Shikina N.V., Bessudnova E.V., Ushakov V.A., Nikitin A.P., Mel’gunov M.S., Ishchenko A.V., Ismagilov Z.R. Effect of Ce cations on the crystallite size and pore structure genesis in nanostructured rutile after calcination. Nanosystems: Physics, Chemistry, Mathematics. 2018;9(5):688-695. https://doi.org/10.17586/2220-8054-2018-9-5-688-695
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