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Re-arrangement method of layered rare earth hydroxide nano sheets and a composite prepared therewith

A rare earth hydroxide and nanosheet technology, applied in rare earth metal oxides/hydroxides, rare earth metal compounds, chemical instruments and methods, etc., can solve the problems of complex operation, difficult control and repetition, and achieve simple operation, Effects that are easy to control and repeat, enhancing stability

Inactive Publication Date: 2016-08-31
BEIJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention discloses a rearrangement method of layered rare earth hydroxide nanosheets and a composite prepared thereof, which are used to solve the shortcomings of the existing rearrangement method, which are complicated to operate and not easy to control and repeat

Method used

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  • Re-arrangement method of layered rare earth hydroxide nano sheets and a composite prepared therewith
  • Re-arrangement method of layered rare earth hydroxide nano sheets and a composite prepared therewith

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0039] Prepare DS according to the method described in the above literature - -LTbH composite nanosheet colloidal suspension.

[0040] DS - -The colloidal suspension of nanosheets of LTbH complex is placed in a dialysis bag (M2M BiologicalTechnology Company Limited, model MD34-5M), then the dialysis bag is placed in water and stirred for 12 hours. After the stirring, the contents of the dialysis bag Centrifugation, the parameters of the centrifugation operation can be 10000rpm, the centrifugation time is 3 minutes, and washed with water 5 times to obtain DS - -LTbH complex nanosheets and then arrange the complex.

[0041] It should be noted that stirring refers to stirring the water after placing the dialysis bag in water.

Embodiment 2

[0043] Prepare DS according to the method described in the above literature - -LEuH composite nanosheet colloidal suspension.

[0044] DS - -After the colloidal suspension of nanosheets of LEuH complex is placed in a dialysis bag ((M2M BiologicalTechnology Company Limited, model MD34-5M), the dialysis bag is placed in water and stirred for 8 hours. After stirring, the contents of the dialysis bag For centrifugation, the parameters of the centrifugation operation can be 10000rpm, the centrifugation time is 3 minutes, and washed with water 5 times to obtain DS - -LEuH complex nanosheets and then arrange the complex.

Embodiment 3

[0046] Prepare DS - -LEuTbH composite nanosheet colloidal suspension

[0047] (1) Add 0.8mmol EuCl 3 ·6H 2 O and 0.2mmol TbCl 3 ·6H 2 O, 3mmol SDS (sodium dodecyl sulfate), 1mmol HMT (hexamethylenetetramine) were added to a 100mL hydrothermal kettle, 80mL of exhaust water was added, and after sealing, the reaction was heated at 90°C for 12h, and then cooled to room temperature Afterwards, the sample was centrifuged at a speed of 15000 rpm for 3 minutes, washed with exhaust water and absolute ethanol for 4 times, and then placed in the air to dry naturally to obtain 1.8 g of the composite.

[0048] (2) Disperse 0.1g solid powder in an Erlenmeyer flask containing 50ml formamide, pass N 2 20min. Then the conical flask was sealed and left standing and kept in a constant temperature box at 40°C for 2.5 days to obtain a colloidal suspension of nanosheets with a concentration of about 2.0 g / L.

[0049] DS - -After the colloidal suspension of LEuTbH complex nanosheets is placed in a dialys...

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Abstract

In one embodiment, the invention discloses a re-arrangement method of layered rare earth hydroxide nano sheets and a composite prepared therewith. The method includes the steps of: a) dispersing a pre-prepared layered rare earth hydroxide in a stripping solvent to prepare a layered rare earth hydroxide nano sheet colloidal suspension solution; b) filling a dialysis bag with the layered rare earth hydroxide nano sheet colloidal suspension solution and placing the dialysis bag in water with stirring for 6-18 h, preferably 8-14 h; and c) after the stirring operation, centrifuging and washing the substances in the dialysis bag to obtain a layered rare earth hydroxide nano sheet re-arranged composite. According to the re-arrangement method, the layered rare earth hydroxide nano sheet colloidal suspension solution just needs to be placed in the dialysis bag with stirring for a certain time and then is centrifuged and washed. The method is simple in operation and is easy to control and repeat.

Description

Technical field [0001] The invention relates to the field of layered rare earth hydroxides, in particular to a re-arrangement method of layered rare earth hydroxide nanosheets and a composite body prepared therefrom. Background technique [0002] Layered rare earth hydroxides (LRHs), as a new type of inorganic layered compounds, due to the unique physicochemical properties of rare earth ions on the laminates and the characteristics of interlayer anions can be exchanged, provide for the design and synthesis of new functional materials More opportunities, since Gandara et al. reported in 2006, it has quickly become a hot topic of research. At the same time, due to the unique 4f layer of rare earth element electrons, the layered rare earth hydroxide has excellent optical, electrical, magnetic, and chemical properties, which can be widely used in high-performance light-emitting devices, magnetic materials and other functional materials. [0003] Layered rare earth hydroxides (LRHs), t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00B82Y40/00B82Y30/00
CPCC01F17/206C01P2002/72C01P2002/82C01P2004/20
Inventor 杨晓晶冯娉娉王新颖
Owner BEIJING NORMAL UNIVERSITY