Synthesis of Ceria Nanoparticles in Pores of SBA-15: Pore Size Effect and Influence of Citric Acid Addition Full article
| Journal |
Microporous and Mesoporous Materials
ISSN: 1387-1811 , E-ISSN: 1873-3093 |
||||||
|---|---|---|---|---|---|---|---|
| Output data | Year: 2019, Volume: 277, Pages: 10-16 Pages count : 7 DOI: 10.1016/j.micromeso.2018.10.013 | ||||||
| Tags | Ceria; SBA-15; Citric acid addition; Small particles; Redox properties of ceria | ||||||
| Authors |
|
||||||
| Affiliations |
|
Funding (2)
| 1 | The Ministry of Education and Science of the Russian Federation | МК-2015.2017.3 |
| 2 | The Ministry of Education and Science of the Russian Federation |
Abstract:
The influence of porous structure and addition of citric acid on the formation of ceria particles inside the SBA-15 pores is studied using nitrogen adsorption-desorption at −196 °C, XRD, UV-visible spectroscopy, TEM and TPR-H2 methods. The use of pores of SBA-15 as nanoreactors provides the formation of CeO2 nanoparticles with sizes below 6 nm. According to XRD and TEM results, the addition of citric acid during the impregnation allows obtaining the CeO2 particles with sizes about 3 nm, while the agglomerates of large СеО2 particles are formed on the surface of the SBA-15, when citric acid is not added. Small sizes of ceria particles (3 nm) cause an enhanced reducibility (TPR-H2), high defectiveness of the particles and red shift in the UV-vis adsorption spectra. These properties may improve the catalytic and photocatalytic activity of the CeO2/SBA-15-based catalysts in deep and selective oxidation of organic compounds.
Cite:
Mikheeva N.N.
, Zaikovskii V.I.
, Mamontov G.V.
Synthesis of Ceria Nanoparticles in Pores of SBA-15: Pore Size Effect and Influence of Citric Acid Addition
Microporous and Mesoporous Materials. 2019. V.277. P.10-16. DOI: 10.1016/j.micromeso.2018.10.013 WOS Scopus РИНЦ ANCAN OpenAlex
Synthesis of Ceria Nanoparticles in Pores of SBA-15: Pore Size Effect and Influence of Citric Acid Addition
Microporous and Mesoporous Materials. 2019. V.277. P.10-16. DOI: 10.1016/j.micromeso.2018.10.013 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 27, 2018 |
| Accepted: | Oct 15, 2018 |
| Published online: | Oct 16, 2018 |
| Published print: | Mar 15, 2019 |
Identifiers:
| Web of science: | WOS:000457662500002 |
| Scopus: | 2-s2.0-85055121686 |
| Elibrary: | 38634064 |
| Chemical Abstracts: | 2018:1996008 |
| Chemical Abstracts (print): | 169:498081 |
| OpenAlex: | W2897524821 |