TY - JOUR
T1 - Crystalline structure, oxygen defects and textural properties of the CeO2/SBA-15 nanomaterials
AU - González, Julio
AU - Chen, Lifang
AU - Wang, Jin An
N1 - Publisher Copyright:
© 2022 Published under licence by IOP Publishing Ltd.
PY - 2022
Y1 - 2022
N2 - In this study, a series of CeO2/SBA-15 nanomaterials were synthesized by varying the CeO2 content. These materials were characterized by different techniques to determine their textural, surface chemical and crystalline properties. Crystallite size and oxygen defects were determined by Microanalysis Using X-Ray Diffraction (MAUD) software based on the Rietveld refinement method. The results showed that the crystallite size slightly increased from 5.6 to 8.4 nm and the surface area decreased from 620 to 370 m2/g as CeO2 content increased from 5 to 10, 15 to 20wt%. The oxygen occupancy that was associated with oxygen defects was found in the crystalline structure of CeO2. The defect concentration was between 6.18 and 14.42%, depending on the ceria content and dispersion. This study confirmed that the CeO2/SBA-15 nanomaterials have larger surface area, highly dispersed CeO2 nanoparticles, and a big number of oxygen defects in the crystalline structure, which can be used in different catalytic reactions.
AB - In this study, a series of CeO2/SBA-15 nanomaterials were synthesized by varying the CeO2 content. These materials were characterized by different techniques to determine their textural, surface chemical and crystalline properties. Crystallite size and oxygen defects were determined by Microanalysis Using X-Ray Diffraction (MAUD) software based on the Rietveld refinement method. The results showed that the crystallite size slightly increased from 5.6 to 8.4 nm and the surface area decreased from 620 to 370 m2/g as CeO2 content increased from 5 to 10, 15 to 20wt%. The oxygen occupancy that was associated with oxygen defects was found in the crystalline structure of CeO2. The defect concentration was between 6.18 and 14.42%, depending on the ceria content and dispersion. This study confirmed that the CeO2/SBA-15 nanomaterials have larger surface area, highly dispersed CeO2 nanoparticles, and a big number of oxygen defects in the crystalline structure, which can be used in different catalytic reactions.
UR - http://www.scopus.com/inward/record.url?scp=85141886433&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2307/1/012038
DO - 10.1088/1742-6596/2307/1/012038
M3 - Artículo de la conferencia
AN - SCOPUS:85141886433
SN - 1742-6588
VL - 2307
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012038
T2 - 11th International Congress of Physics Engineering, CIIF 2021
Y2 - 26 September 2021 through 29 September 2021
ER -