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Cited by 128Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsAdvancements in Solid Oxide Fuel Cells

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Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles

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Ansari, Anees A., Adil, Syed F., Alam, Manawwer, Ahmad, N., Assal, Mohamed E., Labis, Joselito P., Alwarthan, Abdulrahman·2020·Scientific Reports
DOI 10.1038/s41598-020-71869-zPMC PMC7490716
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Abstract

Abstract A series of La 1-x Ce x CoO 3 perovskite nanoparticles with rhombohedral phases was synthesized via sol–gel chemical process. X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Electron Diffraction Spectroscopy (EDS), Thermogravimetric Analysis (TGA), UV–Vis spectroscopy, Fourier Transform Infrared spectra (FTIR), Nitrogen Adsorption/desorption Isotherm, Temperature Program Reduction/Oxidation (TPR/TPO), X-ray Photoelectron Spectroscopy (XPS) techniques were utilized to examine the phase purity and chemical composition of the materials. An appropriate doping quantity of Ce ion in the LaCoO 3 matrix have reduced the bond angle, thus distorting the geometrical structure and creating oxygen vacancies, which thus provides fast electron transportation. The reducibility character and surface adsorbed oxygen vacancies of the perovskites were further improved, as revealed by H 2 -TPR, O 2 -TPD and XPS studies. Furthermore, the oxidation of benzyl alcohol was investigated using the prepared perovskites to examine the effect of ceria doping on the catalytic performance of the material. The reaction was carried out with ultra-pure molecular oxygen as oxidant at atmospheric pressure in liquid medium and the kinetics of the reaction was investigated, with a focus on the conversion and selectivity towards benzaldehyde. Under optimum reaction conditions, the 5% Ce doped LaCoO 3 catalyst exhibited enhanced catalytic activity (i.e., > 35%) and selectivity of > 99%, as compared to the other prepared catalysts. Remarkably, the activity of catalyst has been found to be stable after four recycles.

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Crossref · 10.1038/s41598-020-71869-z

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Figures

Figure 1 X-ray diffraction pattern of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.
Figure 1 X-ray diffraction pattern of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.CC BY · PubMed Central
Figure 2 (a) TEM micrographs and (b) EDX spectrum of La0.95Ce0.05CoO3 nanoparticles.
Figure 2 (a) TEM micrographs and (b) EDX spectrum of La0.95Ce0.05CoO3 nanoparticles.CC BY · PubMed Central
Figure 3 Thermo-gravimetric analysis of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.
Figure 3 Thermo-gravimetric analysis of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.CC BY · PubMed Central
Figure 4 FTIR spectra of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticle.
Figure 4 FTIR spectra of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticle.CC BY · PubMed Central
Figure 5 UV–Vis absorption spectra of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.
Figure 5 UV–Vis absorption spectra of LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.CC BY · PubMed Central
Figure 6 The plot of αhγ2 (cm−1 eV)2 vs. Photon energy (eV) LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.
Figure 6 The plot of αhγ2 (cm−1 eV)2 vs. Photon energy (eV) LaCoO3, La0.95Ce0.05CoO3, La0.93Ce0.07CoO3 and La0.90Ce0.10CoO3 nanoparticles.CC BY · PubMed Central
Figure 7 (a) TPR and (b) TPO profile of LaCoO3, La0.95Ce0.05CoO3 and La0.90Ce0.10CoO3 perovskite nanoparticles.
Figure 7 (a) TPR and (b) TPO profile of LaCoO3, La0.95Ce0.05CoO3 and La0.90Ce0.10CoO3 perovskite nanoparticles.CC BY · PubMed Central
Figure 8 XPS analysis of the La 3d3/2&5/2 spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.
Figure 8 XPS analysis of the La 3d3/2&5/2 spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.CC BY · PubMed Central
Figure 9 XPS analysis of the Co 2p spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.
Figure 9 XPS analysis of the Co 2p spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.CC BY · PubMed Central
Figure 10 XPS analysis of the O1s spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.
Figure 10 XPS analysis of the O1s spectra recorded for the LaCoO3, La0.95Ce0.05CoO3, and La0.93Ce0.07CoO3 nanoparticles.CC BY · PubMed Central
Figure 11 Graphical representation of the kinetics of oxidation of benzyl alcohol to benzaldehyde employing perovskites.
Figure 11 Graphical representation of the kinetics of oxidation of benzyl alcohol to benzaldehyde employing perovskites.CC BY · PubMed Central
Figure 12 Recyclability of La0.95Co0.05CeO3 for the aerial oxidation of benzyl alcohol. (Reaction conditions: 2 mmol of benzyl alcohol, calcination temperature at 300 ºC, oxygen with rate 20 mL min−1, 0.3 g of catalyst, 10 mL of toluene, reaction temperature at 100 °C, and 12 h of reaction time).
Figure 12 Recyclability of La0.95Co0.05CeO3 for the aerial oxidation of benzyl alcohol. (Reaction conditions: 2 mmol of benzyl alcohol, calcination temperature at 300 ºC, oxygen with rate 20 mL min−1, 0.3 g of catalyst, 10 mL of toluene, reaction temperature at 100 °C, and 12 h of reaction time).CC BY · PubMed Central

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Citations

Cites

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Research works printed but not linked: 3

  1. Luo, J.-Y. et al. One-step synthesis of nanostructured Pd-doped mixed oxides MOx-CeO2 (M = Mn, Fe Co, Ni, Cu) for efficient CO and C3H8 total oxidation. Appl. Catal. B 87, 92–103 (2009). · DOI
  2. Hammouda, S. B. et al. Reactivity of novel Ceria-Perovskite composites CeO2-LaMO3 (MCu, Fe) in the catalytic wet peroxidative oxidation of the new emergent pollutant ‘Bisphenol F’: Characterization, kinetic and mechanism studies. Appl. Catal. B 218, 119–136 (2017). · DOI
  3. Ansari, A. A. et al. Synthesis, structural and optical properties of Mn-doped ceria nanoparticles: A promising catalytic material. Acta Metall. Sin. 29, 265–273 (2016). · DOI

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Metadata

Authors
Ansari, A. A., Adil, S. F., Alam, M., Ahmad, N., Assal, M. E., Labis, J. P., & Alwarthan, A.
Affiliations
King Saud University (SA)
Corresponding author
Ansari, Anees A.
ORCID
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2020-09-14
Volume
10
Issue
1
Pages
15012-15012
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/s41598-020-71869-z
PMC
PMC7490716
OpenAlex
W3085474473
Cited by
128
References
65
Citations by year
2026: 28 · 2025: 35 · 2024: 19 · 2023: 22 · 2022: 16 · 2021: 7 · 2020: 1
FWCI
4.48
Type
journal article
Language
en
Open access
Licence
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
King Saud University (RG-1439-089)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysis and Oxidation Reactions
  • Physical Sciences › Materials Science › Materials Chemistry › Advancements in Solid Oxide Fuel Cells
Keywords
LaCoO3 perovskite, cerium doping, rhombohedral phase, perovskite nanocrystals, oxygen vacancies, reducibility, benzyl alcohol oxidation, benzaldehyde selectivity, heterogeneous catalysis, catalyst stability, sol-gel synthesis, reaction kinetics

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CoChat. (2026). Citation check: Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles. https://app.cochat.ai/papers/10.1038/s41598-020-71869-z
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Ansari, A. A., Adil, S. F., Alam, M., Ahmad, N., Assal, M. E., Labis, J. P., & Alwarthan, A. (2020). Catalytic performance of the Ce-doped LaCoO3 perovskite nanoparticles. Scientific Reports. https://doi.org/10.1038/s41598-020-71869-z