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Ceria Nanotube Formed by Sacrificed Precursors Template through Oswald Ripening.

Pang L, Wang X, Tang X - PLoS ONE (2015)

Bottom Line: Controllable preparation of ceria nanotube was realized by hydrothermal treatment of Ce(OH)CO3 precursors.The gradually changing morphologies and microstructures of cerium oxide were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy.On the basis of the time-dependent experimental observation, the possible formation mechanism related to oriented attachment and Oswald ripening was proposed, which might afford some guidance for the synthesis of other inorganic nanotubes.

View Article: PubMed Central - PubMed

Affiliation: School of Material Science and Engineering, Shandong Jiaotong University, Jinan, P.R China.

ABSTRACT
Controllable preparation of ceria nanotube was realized by hydrothermal treatment of Ce(OH)CO3 precursors. The gradually changing morphologies and microstructures of cerium oxide were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. A top-down path is illuminated to have an insight to the morphological transformation from nanorod to nanotube by adjusting the reaction time. The growth process is investigated by preparing a series of intermediate morphologies during the shape evolution of CeO2 nanostructure based on the scanning electron microscopy image observation. On the basis of the time-dependent experimental observation, the possible formation mechanism related to oriented attachment and Oswald ripening was proposed, which might afford some guidance for the synthesis of other inorganic nanotubes.

No MeSH data available.


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(a)TEM image of as-prepared Ce(OH)CO3 precursors and (b) SEM image of CeO2 nanotubes.
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pone.0132536.g002: (a)TEM image of as-prepared Ce(OH)CO3 precursors and (b) SEM image of CeO2 nanotubes.

Mentions: Representative microscopic images of the as-maderodlike Ce(OH)CO3 and as-obtained CeO2 nanotubes are as follows. TEM image (Fig 2a) shows a typical morphology of these precursors, which revealing a one-dimension structure under the conditions used. It can be seen that the nanorods have a diameter around 200~300nm, with length typically larger than 1μm. SEM image (Fig 2b) shows the synthesized CeO2 nanotube sample, clearly displaying the formation of hollow interiors (red circle), with a well-shaped hollow interior. The diameter of the tube is about 50–100nm.


Ceria Nanotube Formed by Sacrificed Precursors Template through Oswald Ripening.

Pang L, Wang X, Tang X - PLoS ONE (2015)

(a)TEM image of as-prepared Ce(OH)CO3 precursors and (b) SEM image of CeO2 nanotubes.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494707&req=5

pone.0132536.g002: (a)TEM image of as-prepared Ce(OH)CO3 precursors and (b) SEM image of CeO2 nanotubes.
Mentions: Representative microscopic images of the as-maderodlike Ce(OH)CO3 and as-obtained CeO2 nanotubes are as follows. TEM image (Fig 2a) shows a typical morphology of these precursors, which revealing a one-dimension structure under the conditions used. It can be seen that the nanorods have a diameter around 200~300nm, with length typically larger than 1μm. SEM image (Fig 2b) shows the synthesized CeO2 nanotube sample, clearly displaying the formation of hollow interiors (red circle), with a well-shaped hollow interior. The diameter of the tube is about 50–100nm.

Bottom Line: Controllable preparation of ceria nanotube was realized by hydrothermal treatment of Ce(OH)CO3 precursors.The gradually changing morphologies and microstructures of cerium oxide were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy.On the basis of the time-dependent experimental observation, the possible formation mechanism related to oriented attachment and Oswald ripening was proposed, which might afford some guidance for the synthesis of other inorganic nanotubes.

View Article: PubMed Central - PubMed

Affiliation: School of Material Science and Engineering, Shandong Jiaotong University, Jinan, P.R China.

ABSTRACT
Controllable preparation of ceria nanotube was realized by hydrothermal treatment of Ce(OH)CO3 precursors. The gradually changing morphologies and microstructures of cerium oxide were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. A top-down path is illuminated to have an insight to the morphological transformation from nanorod to nanotube by adjusting the reaction time. The growth process is investigated by preparing a series of intermediate morphologies during the shape evolution of CeO2 nanostructure based on the scanning electron microscopy image observation. On the basis of the time-dependent experimental observation, the possible formation mechanism related to oriented attachment and Oswald ripening was proposed, which might afford some guidance for the synthesis of other inorganic nanotubes.

No MeSH data available.


Related in: MedlinePlus