2020
DOI: 10.1021/acsami.0c16326
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Formation of Catalytic Active Sites in Hydrothermally Obtained Binary Ceria–Iron Oxides: Composition and Preparation Effects

Abstract: A series of mesoporous cerium−iron binary oxides was prepared by a hydrothermal technique using CTAB as a template. The influence of the Fe/Ce ratio and the variations in the preparation techniques such as the type of solvent and the precipitation agent, the approach of the template release, and the temperature of calcination on the phase composition, textural, structural, surface, and redox properties of the obtained materials was studied in details by XRD, nitrogen physisorption, TPR, FTIR, UV−vis, XPS, Rama… Show more

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Cited by 19 publications
(24 citation statements)
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“…The porosity of the particles was dependent on the volume of Ni(NO 3 ) 2 solution used in synthesis, and materials with~6.5 mol% Ni showed high catalytic performance in carbon monoxide oxidation. Mesoporous cerium-iron binary oxides prepared by a hydrothermal technique using CTAB as a template were tested as catalysts in methanol decomposition and total oxidation of ethyl acetate: low levels of Fe were dispersed in the fluorite structure, but higher levels gave clustering of Fe and ultimately phase separation above 50% Fe [75].…”
Section: Transition Metal-substituted Ceriasmentioning
confidence: 99%
“…The porosity of the particles was dependent on the volume of Ni(NO 3 ) 2 solution used in synthesis, and materials with~6.5 mol% Ni showed high catalytic performance in carbon monoxide oxidation. Mesoporous cerium-iron binary oxides prepared by a hydrothermal technique using CTAB as a template were tested as catalysts in methanol decomposition and total oxidation of ethyl acetate: low levels of Fe were dispersed in the fluorite structure, but higher levels gave clustering of Fe and ultimately phase separation above 50% Fe [75].…”
Section: Transition Metal-substituted Ceriasmentioning
confidence: 99%
“…Raman peaks in the A 1g mode appear at 216 cm À1 , while Raman peaks in the E g mode appear at 286 and 398 cm À1 . 43 The peak at 658 cm À1 was ascribed to the disordered effect of Fe 2 O 3 . Additionally, the peaks of 1321 and 1581 cm À1 in the CFC diagram are the E g vibration modes corresponding to the sp 2 electronic structure of D and G modes.…”
Section: Materials Advancesmentioning
confidence: 99%
“…On this basis, Yang et al proposed a parallel series catalytic mechanism with more than two kinds of catalysts simultaneously. A series catalyst was constructed using a hollow structure MnO 2 (V O –MnO 2 ) with well-dispersed CuO as the shell and an oxygen-rich vacancy . The tight contact of the CuO/MnO 2 interface ensures the dynamic electron complement to maintain the continuity of the reaction.…”
Section: Factors Influencing the Catalytic Activity Of Composite Meta...mentioning
confidence: 99%
“…A series catalyst was constructed using a hollow structure MnO 2 (V O −MnO 2 ) with well-dispersed CuO as the shell and an oxygen-rich vacancy. 33 The tight contact of the CuO/MnO 2 interface ensures the dynamic electron complement to maintain the continuity of the reaction. The sample energy band structure is shown in Figure 10 Perovskite oxide (general formula: ABO 3 ) has been widely used as an active component in the industrial catalytic oxidation of VOCs.…”
Section: Influence Of Metal Composition and Proportion On Catalystmentioning
confidence: 99%
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