Facile preparation of Mn-doped CeO2 Submicrorods by composite-hydroxide-salt-mediated approach and their magnetic property

Tan, Jie; Zhang, Wei; Lv, Yaohui; Xia, Ailin

doi:10.1590/s1516-14392013005000040

Cited by 35 publications

(6 citation statements)

References 32 publications

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“…Pure and flower-like Mn-doped CeO 2 nanostructure were obtained by a simple one-step composite-hydroxide-mediated method according to our group previously report with tiny modification 27 . In a typical preparation process, (1) a total of 20 g of KOH and KI was mixed at a ratio of 70.6:29.4 and placed in a 25mL Teflon vessel.…”

Section: Materials Preparationmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Zhang

et al. 2018

Mat. Res.

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Mn-doped CeO 2 flower-like microstructures have been synthesized by a facile one-step compositehydroxide-mediated method. The structure, morphology, optical and the surface properties of Mn doped CeO 2 have been investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), UV-Vis absorption spectroscopy and X-ray photoelectron spectroscopy (XPS). The XRD results confirmed the successful incorporation of Mn into the CeO 2 lattice through the formation of face-centered cubic solid solution. The photocatalytic activities of the catalysts were evaluated by measuring the photodegradation efficiency of Rhodamine B (RhB) under ultraviolet light irradiation. With an optimal molar ratio of 1% in Mn/CeO 2 the highest rate photodegradation was achieved under the experimental conditions. The enhanced photocatalytic activity can be attributed to the incorporation of multivalent Mn in CeO 2 promoted the separation of photogenerated charges, inhibited the recombination of photogenerated carriers, and thus prolonged the charges lifetime to participate in the photocatalytic reaction.

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Section: Materials Preparationmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Zhang

et al. 2018

Mat. Res.

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“…CeO 2 doped with TMs such as Fe, Co, Ni, Mn and Cu or REs such as Sm, Nd, Pr and Gd have been found to exhibit RT-FM which has been explained by a V O mediated F-center exchange (FCE) mechanism [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In addition to their advantageous magnetic properties, improved electrical, optical and catalytic properties have been found in alkaline earth (AE) and REdoped CeO 2 materials.…”

Section: Introductionmentioning

confidence: 99%

Modification of Ce valence states by Sm/Sr co-doping of CeO 2 nanoparticles for improved magneto-electrochemical properties

et al. 2016

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“…The Shirley background subtraction and a Gaussian-Lorentzian peak shape character were used for the spectra deconvolution. The charging effects corrections were performed by adjusting the Ce 3d3/2 peak to a binding energy (BE) of 916.65 eV [10,11].…”

Section: Samples Characterizationmentioning

confidence: 99%

A Comparative Study of Nanosized Gold and Copper Catalysts on Y-doped Ceria for the Water-Gas Shift Reaction

Tabakova¹,

Ivanov²,

Sobczak³

et al. 2019

Proceedings of the 5th World Congress on New Technologies

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The increasing demands for high-purity hydrogen for fuel-cell processing systems caused a renewed interest in the watergas shift reaction. This work aims to analyse the suitability of gold-and copper-based catalysts for efficient upgrading the purity of hydrogen for small-scale applications. New catalytic materials were developed by deposition of nanosized gold or copper oxide particles on ceria doped by various amount of Y2O3 (1.0, 2.5 and 5.0 wt.%). A favourable effect of the ceria modification on the WGS activity of gold/ceria catalysts was observed. Superior CO conversion degrees (> 95 %) were achieved in the range 180-220 °C. The similarity in the catalytic activity was explained with the insignificant differences in the gold particle size among all gold-based samples. Surprisingly, copper-based catalysts exhibited decreased activity at increasing amount of Y2O3 in the composition of ceria supports. A characterization of the catalysts by N2 physisorption, XRD, HRTEM/HAADF, XPS, EPR and H2-TPR was carried out to reveal the effect of dopant amount on the WGS activity. The differences in the WGS performance were related to the catalysts reducibility, e.g. the availability of oxygen species with enhanced mobility. The analysis of structure-property-WGS activity relations proved to be a reliable tool for the improvement of catalyst performance by rational changes in the catalyst composition and structure.

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Facile preparation of Mn-doped CeO2 Submicrorods by composite-hydroxide-salt-mediated approach and their magnetic property

Cited by 35 publications

References 32 publications

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Modification of Ce valence states by Sm/Sr co-doping of CeO 2 nanoparticles for improved magneto-electrochemical properties

A Comparative Study of Nanosized Gold and Copper Catalysts on Y-doped Ceria for the Water-Gas Shift Reaction

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