A comparative study of hydrothermally derived Mn, Fe, Co, Ni, Cu and Zn doped ceria nanocatalysts

Kurajica, Stanislav; Mužina, Katarina; Dražić, Goran; Matijašić, Gordana; Duplančić, Marina; Mandić, Vilko; Župančić, Martina; Munda, Ivana Katarina

doi:10.1016/j.matchemphys.2020.122689

Cited by 22 publications

(28 citation statements)

References 47 publications

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“…analysis showed that Mn substitution had occurred to the expected concentration, but the Cu and Zn concentration was lower than expected [61]. These materials appeared single phase by powder X-ray diffraction (XRD) and had average crystallite sizes between 4.2 and 6.3 nm, with Mn doped > pure ceria > Cu doped > Zn doped, as confirmed using scanning transmission electron microscopy (STEM).…”

Section: Transition Metal-substituted Ceriasmentioning

confidence: 79%

“…Kurajica et al produced ceria samples doped with~10 mol% Mn, Cu or Zn from sulfate precursors and 8 M aqueous NaOH heated at 120 • C for 16 h. Elemental analysis using electron energy loss spectroscopy (EELS) and energy-dispersive X-ray spectroscopy (EDS) analysis showed that Mn substitution had occurred to the expected concentration, but the Cu and Zn concentration was lower than expected [61]. These materials appeared single phase by powder X-ray diffraction (XRD) and had average crystallite sizes between 4.2 and 6.3 nm, with Mn doped > pure ceria > Cu doped > Zn doped, as confirmed using scanning transmission electron microscopy (STEM).…”

Section: Transition Metal-substituted Ceriasmentioning

confidence: 99%

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Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

et al. 2021

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We review the solution-based synthesis routes to cerium oxide materials where one or more elements are included in place of a proportion of the cerium, i.e., substitution of cerium is performed. The focus is on the solvothermal method, where reagents are heated above the boiling point of the solvent to induce crystallisation directly from the solution. This yields unusual compositions with crystal morphology often on the nanoscale. Chemical elements from all parts of the periodic table are considered, from transition metals to main group elements and the rare earths, including isovalent and aliovalent cations, and surveyed using the literature published in the past ten years. We illustrate the versatility of this synthesis method to allow the formation of functional materials with applications in contemporary applications such as heterogeneous catalysis, electrodes for solid oxide fuel cells, photocatalysis, luminescence and biomedicine. We pick out emerging trends towards control of crystal habit by use of non-aqueous solvents and solution additives and identify challenges still remaining, including in detailed structural characterisation, the understanding of crystallisation mechanisms and the scale-up of synthesis.

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Section: Transition Metal-substituted Ceriasmentioning

confidence: 79%

Section: Transition Metal-substituted Ceriasmentioning

confidence: 99%

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

et al. 2021

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“…Doping can enhance catalytic efficiency of ceria by altering its properties or crystal size. Various elements were already used for ceria doping [8] . It was shown that ceria doping with manganese can improve its catalytic properties as well as thermal stability [8,9] .…”

Section: Introductionmentioning

confidence: 99%

“…Various elements were already used for ceria doping [8] . It was shown that ceria doping with manganese can improve its catalytic properties as well as thermal stability [8,9] . Manganese incorporation in the ceria crystal lattice eases the Ce 3+ ↔Ce 4+ shift and that leads to better oxygen storage capacity and creates more oxygen vacancies [8] .…”

Section: Introductionmentioning

confidence: 99%

“…[8] It was shown that ceria doping with manganese can improve its catalytic properties as well as thermal stability. [8,9] Manganese incorporation in the ceria crystal lattice eases the Ce 3 + $ Ce 4 + shift and that leads to better oxygen storage capacity and creates more oxygen vacancies. [8] In our recent work [10] ceria nanoparticles were obtained by hydrothermal synthesis.…”

Section: Introductionmentioning

confidence: 99%

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Properties and Potential Applications of Manganese‐doped Ceria Gained by Mechanochemical Synthesis

et al. 2022

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Manganese doped nanosized ceria samples were prepared by mechanochemical synthesis. Characterization was done using X‐ray diffraction (XRD), UV‐Vis diffuse reflectance spectroscopy (UV‐Vis DRS), X‐ray photoelectron spectroscopy (XPS) and others. Different conditions of synthesis were tried. Beside cerium carbonate, cerium chloride and amorphous phase remain in the product. Cerium carbonate decomposes around 250 °C, while the decomposition process centered at 330 °C was attributed to cerium chloride decomposition. Along with ceria, birnessite occurs in doped samples after thermal treatment and washing. Ceria lattice constant is reduced from 5.405 Å for pure sample to 5.401 Å for the 30 % doped sample as a consequence of manganese entrance in the ceria lattice. Ceria bandgap is significantly reduced with doping. Particle size was far greater than crystallite size due to a strong tendency toward agglomeration. All prepared powders proved to be efficient catalysts for toluene oxidation with the 30 % doped sample being the most promising.

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Metal‐Organic Frameworks‐Derived Nanocarbon Materials and Nanometal Oxides for Photocatalytic Applications

Ye,

Xu,

Liang

et al. 2024

Chemistry An Asian Journal

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Harnessing low‐density solar energy and converting it into high‐density chemical energy through photocatalysis has emerged as a promising avenue for the production of chemicals and remediation of environmental pollution, which contributes to alleviating the overreliance on fossil fuels. In recent years, metal‐organic frameworks (MOFs) have gained widespread application in the field of photocatalysis due to their photostability, tunable structures, and responsiveness in the visible light range. However, most MOFs exhibit relatively low response to light, limiting their practical applications. MOFs‐derived nanomaterials not only retain the inherent advantages of pristine MOFs but also show enhanced light adsorption and responsiveness. This review categorizes and summarizes MOFs‐derived nanomaterials, including nanocarbons and nanometal oxides, providing representative examples for the synthetic strategies of each category. Subsequently, the recent research progress on MOFs‐derived materials in photocatalytic applications are systematically introduced, specifically in the areas of photocatalytic water splitting to H2, photocatalytic CO2 reduction, and photocatalytic water treatment. The corresponding mechanisms involved in each photocatalytic reaction are elaborated in detail. Finally, the review discusses the challenges and further directions faced by MOFs‐derived nanomaterials in the field of photocatalysis, highlighting their potential role in advancing sustainable energy production and environmental remediation.

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A comparative study of hydrothermally derived Mn, Fe, Co, Ni, Cu and Zn doped ceria nanocatalysts

Cited by 22 publications

References 47 publications

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Properties and Potential Applications of Manganese‐doped Ceria Gained by Mechanochemical Synthesis

Metal‐Organic Frameworks‐Derived Nanocarbon Materials and Nanometal Oxides for Photocatalytic Applications

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