Synthesis of ceria nanoparticles in pores of SBA-15: Pore size effect and influence of citric acid addition
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 formatio...
| Published in: | Microporous and mesoporous materials Vol. 277. P. 10-16 |
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| Main Author: | |
| Other Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000674321 Перейти в каталог НБ ТГУ |
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| 024 | 7 | |a 10.1016/j.micromeso.2018.10.013 |2 doi | |
| 035 | |a to000674321 | ||
| 039 | 9 | |a 202002031728 |c 202001281557 |d VLOAD |y 202001281540 |z Александр Эльверович Гилязов | |
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| 100 | 1 | |a Mikheeva, Natalia N. |9 511019 | |
| 245 | 1 | 0 | |a Synthesis of ceria nanoparticles in pores of SBA-15: Pore size effect and influence of citric acid addition |c N. N. Mikheeva, V. I. Zaikovskii, G. V. Mamontov |
| 504 | |a Библиогр.: 57 назв. | ||
| 520 | 3 | |a 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. | |
| 653 | |a оксид церия | ||
| 653 | |a окислительно-восстановительные свойства | ||
| 653 | |a церий | ||
| 653 | |a лимонная кислота | ||
| 653 | |a селективное окисление | ||
| 655 | 4 | |a статьи в журналах |9 879358 | |
| 700 | 1 | |a Zaikovskii, Vladimir I. |9 45756 | |
| 700 | 1 | |a Mamontov, Grigory V. |9 99196 | |
| 773 | 0 | |t Microporous and mesoporous materials |d 2019 |g Vol. 277. P. 10-16 |x 1387-1811 | |
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