Synthesis of mixed Mn–Ce–Ox one dimensional nanostructures and their catalytic activity for CO oxidation

Xing, Xinxin; Cai, Yun; Chen, Nan; Li, Yuxiu; Deng, Dongyang; Wang, Yude

doi:10.1016/j.ceramint.2014.12.014

Cited by 25 publications

(7 citation statements)

References 41 publications

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“…Song et al used a similar synthesis approach to Fe-and Co-containing ceria samples and also found rod-like crystal morphologies; in this case, beneficial activity for the catalysis for the total oxidation of propane was found [66]. Xing et al also reported rod-shape particles upon inclusion of Mn into CeO2 by a direct hydrothermal crystallisation [67]. Liu et al demonstrated the synthesis of 2 mol% Co-doped nanospheres from (NH 4 ) 2 Ce(NO 3 ) 6 and CoCl 2 in acetic acid and ethylene glycol heated at 180 • C for 8 h [68].…”

Section: Transition Metal-substituted Ceriasmentioning

confidence: 98%

“…The reason for the formation of extremely anisotropic crystal forms, Figure 6, is not apparent, since no solution additives were employed: the synthesis method simply used nitrate salts in sodium hydroxide solution heated at 100 • C. Song et al used a similar synthesis approach to Fe-and Co-containing ceria samples and also found rod-like crystal morphologies; in this case, beneficial activity for the catalysis for the total oxidation of propane was found [66]. Xing et al also reported rod-shape particles upon inclusion of Mn into CeO 2 by a direct hydrothermal crystallisation [67].…”

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: 98%

Section: Transition Metal-substituted Ceriasmentioning

confidence: 99%

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

et al. 2021

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“…22,23 Doping various metals into ceria is another way to create oxygen vacancies. As Mn and Ce have a tendency to form solid solutions, 24,25 doping Mn into the ceria lattice can greatly increase oxygen mobility and also help to produce oxygen vacancies on a catalyst's surface. 26 When the atomic ratio of Mn : Ce is less than 1, all the MnO x -CeO 2 catalysts possess the uorite cubic structures of CeO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…MnO x -CeO 2 nanorods and nanocubes were synthesized through a modied method reported in the literature. 24,25 To obtain MnO x -CeO 2 nanorods, 0.3957 g (50 mol% of Mn with respect to Ce) of MnCl 2 $4H 2 O and 0.868 g of Ce(NO 3 ) 3 $6H 2 O were dissolved into 5 mL and 10 mL of deionized water, respectively. Then the two solutions were mixed and stirred for 10 min.…”

Section: Introductionmentioning

confidence: 99%

Oxygen-vacancy-promoted catalytic wet air oxidation of phenol from MnO_x–CeO₂

Wen

Yue

et al. 2017

RSC Adv.

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“…Compared with R-Ag/MnO 2 , the chemical valence of Mn of T-Ag/MnO 2 is mainly in Mn 4+ oxidation state and a small quantity of Mn 3+ co-existed. It has been verified that the higher extent of the Mn 4+ favors the redox reactions and gives a boost to the catalytic performance of VOCs degradation 35 , as well as the presence of element Mn plays a facilitating role in the production of oxygen vacancies and the enhancement of oxygen mobility 36 . From Table 3, it could be found that the molar ratio of surface Mn 4+ of R-Ag/MnO 2 is higher comparing with T-Ag/MnO 2 , which gives rise to the fact that the nanorod Ag/MnO 2 molded catalyst exhibited good catalytic activity for VOCs.…”

Section: Resultsmentioning

confidence: 97%

Catalytic oxidation of toluene, ethyl acetate and chlorobenzene over Ag/MnO2-cordierite molded catalyst

Zhu

Zhang

et al. 2019

Sci Rep

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Multi-structured Ag/MnO 2 -cordierite molded catalysts were prepared by hydrothermal method and applied to the catalytic oxidation of VOCs. Catalytic activities of Ag/MnO 2 -cordierite were evaluated by 1000 ppm of toluene, ethyl acetate and chlorobenzene degradation respectively at the air atmosphere, and their physicochemical properties were characterized through multiple techniques containing XRD, SEM, TEM, H 2 -TPR and XPS. It is found that nanorod Ag/MnO 2 -cordierite molded catalyst showed prominent catalytic activity for VOCs decomposition and the T 90 for toluene, ethyl acetate and chlorobenzene are 275 °C, 217 °C and 385 °C respectively under the space velocity of 10,000 h −1 . High valence manganese oxide, more active lattice oxygen proportion and superior low-temperature reducibility were the great contributors to the high activity of the catalyst with nanorod morphology. Studies of space velocity and catalytic stability over nanorod Ag/MnO 2 -cordierite molded catalyst have confirmed the good catalytic performance, excellent mechanical strength and satisfied anti-toxicity to Cl at higher space velocity, which indicates that this molded catalyst have promise for industrial application.

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Synthesis of mixed Mn–Ce–Ox one dimensional nanostructures and their catalytic activity for CO oxidation

Cited by 25 publications

References 41 publications

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Oxygen-vacancy-promoted catalytic wet air oxidation of phenol from MnO_x–CeO₂

Catalytic oxidation of toluene, ethyl acetate and chlorobenzene over Ag/MnO2-cordierite molded catalyst

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Synthesis of mixed Mn–Ce–Ox one dimensional nanostructures and their catalytic activity for CO oxidation

Cited by 25 publications

References 41 publications

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Solvothermal Synthesis Routes to Substituted Cerium Dioxide Materials

Oxygen-vacancy-promoted catalytic wet air oxidation of phenol from MnOx–CeO2

Catalytic oxidation of toluene, ethyl acetate and chlorobenzene over Ag/MnO2-cordierite molded catalyst

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Oxygen-vacancy-promoted catalytic wet air oxidation of phenol from MnO_x–CeO₂