A mild solution strategy for the synthesis of mesoporous CeO2 nanoflowers derived from Ce(HCOO)3

Wei, Jingjing; Yang, Zhijie; Yang, Hongxiao; Sun, Tao; Yang, Yanzhao

doi:10.1039/c1ce05324h

Cited by 45 publications

(47 citation statements)

References 53 publications

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“…As an important functional rare earth oxide, CeO 2 has been extensively investigated because of its promising application in catalysis, such as oxidation of carbon monoxide (CO), three‐way catalysts, photocatalysts, sewage treatment, hydrogenation of cinnamaldehyde, and low‐temperature water‐gas‐shifts reactions . However, pure ceria exhibits low catalytic activity due to limited number of anion defects and oxygen vacancy , . Doping of additional metals is an effective way to enhance catalytic performance and long‐time stability and homogeneous doping is essential for achieving superior catalytic properties , .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

et al. 2019

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We report a facile preparation method of Ti-doped CeO 2 nanosheets and their use as supports for palladium (Pd) deposition. The nanosheets were fabricated by the coordination-precipitation method, and Pd nanoparticles were placed on the surfaces in situ. The obtained Pd-loaded nanosheets Ti x Ce 1-x O 2 -Pd were applied as catalysts in the hydrogenation of 4-nitrophenol (4-NP). While the catalyst supported by pure CeO 2 nanosheets exhibited a 4-NP conversion of 40 % in 10 min, doping a small amount of Ti into the support led to a [a]

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

et al. 2019

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“…In turn, these structural properties are often determined by the preparation methods [13,14]. Therefore, a wealth of methods has been developed for controlled synthesis of hierarchically nanostructured materials [15][16][17][18][19][20][21][22]. Recently, an ethylene-glycol-mediated process, based on a simple and economical route, has been used to successfully synthesize three-dimensional (3D) micro/nano materials [23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Lin

Zheng

et al. 2012

Applied Catalysis B: Environmental

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a b s t r a c tA micrometer-sized, nanostructured, flower-like Co 3 O 4 -CeO 2 composite oxide was synthesized by an ethylene-glycol-mediated process. The composite oxide was an assembly of polycrystalline nanoparticles, with a typical mesoporous structure. The composite's catalytic activity in 1,2,4-trichlorobenzene degradation was evaluated using a pulsed-flow microreactor-gas chromatography system, and compared with that of quartz sand, commercial CeO 2 , commercial Co 3 O 4 , and a Co 3 O 4 /CeO 2 equimass mixture. The composite oxide was a promising catalyst for 1,2,4-trichlorobenzene degradation. This is attributed to the structural features of the composite oxide with a high specific surface area and a high total pore volume, and the synergistic effect between the two composite phases. The easy creation of high-mobility active oxygen on CeO 2 and the easy cleavage of Co O bonds at the interface of the two components promote reactivity of Co 3 O 4 in 1,2,4-trichlorobenzene degradation. Pulsed catalytic theory suggests a first-order reaction between the composite oxide and 1,2,4-trichlorobenzene, with an apparent activation energy of about 27 kJ/mol, and degradation on the Co 3 O 4 -CeO 2 composite oxide would occur easily.

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“…Previously, fabrication of CeO 2 , ZrO 2 , and CeO 2 -ZrO 2 composites has been accomplished through several techniques, for example by using sacrificial templates such as polymers [29], colloidal carbon [30], and silica [31] and by calcination of metal-organicframeworks (MOFs) [32,33], to yield higher-order spherical, core-shell, tube, and cubic structures. Recently, we developed an ultimately simple, rapid, and template-free fabrication strategy for CeO 2 and ZrO 2 MARIMO NPs, in which a precursor solution of Ce(NO 3 ) 3 or ZrO(NO 3 ) 2 and formic acid in methanol was rapidly heated (at a rate of 500 °C/min) to 300 °C in a sealed SUS-316 tubular reactor and maintained at the temperature for only 10 min [25].…”

Section: Resultsmentioning

confidence: 99%

Ultra-simple synthetic approach to the fabrication of CeO2–ZrO2 mixed nanoparticles into homogeneous, domain, and core–shell structures in mesoporous spherical morphologies using supercritical alcohols

Pradeep

Habu

Tooriyama

et al. 2015

The Journal of Supercritical Fluids

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CeO 2 -ZrO 2 composite nanoparticles with mesoporous and spherical morphologies were assembled into different homogeneously dispersed, domain, and core-shell structures by changing the reaction conditions, such as the heating rate, acid, and solvent, in supercritical alcohols. Ce x Zr 1-x O 2 with homogeneous structures were prepared from Ce(NO 3 ) 3 and ZrO(NO 3 ) 2 in the presence of formic acid in methanol by rapid heating (500 °C/min) to 300 °C, while CeO 2 -ZrO 2 with domain structures were obtained by slow heating (5.4 °C/min). Treatment of mesoporous and spherical ZrO 2 nanoparticles with a Ce(NO 3 ) 3 solution in supercritical conditions yielded CeO 2 -ZrO 2 nanocomposites with core-shell morphologies, while solvents playing a key role in controlling the thickness of the outer shell; methanol produced a very thin outer shell structure of cubic CeO 2 and 2-propanol afforded a thick one.

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A mild solution strategy for the synthesis of mesoporous CeO2 nanoflowers derived from Ce(HCOO)3

Cited by 45 publications

References 53 publications

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Ultra-simple synthetic approach to the fabrication of CeO2–ZrO2 mixed nanoparticles into homogeneous, domain, and core–shell structures in mesoporous spherical morphologies using supercritical alcohols

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A mild solution strategy for the synthesis of mesoporous CeO2 nanoflowers derived from Ce(HCOO)3

Cited by 45 publications

References 53 publications

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO2 Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO2 Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Synthesis of flower-like Co3O4–CeO2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene

Ultra-simple synthetic approach to the fabrication of CeO2–ZrO2 mixed nanoparticles into homogeneous, domain, and core–shell structures in mesoporous spherical morphologies using supercritical alcohols

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Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol

Facile Synthesis of Well‐Dispersed Pd Nanoparticles on Ti‐Doped CeO₂ Nanosheets and Their Use as Catalyst in the Hydrogenation of 4‐Nitrophenol