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Rearrangement Method of Layered Rare Earth Hydroxide Nanosheets and Composite Prepared

A technology of rare earth hydroxides and nanosheets, applied in the direction of rare earth metal oxides/hydroxides, rare earth metal compounds, chemical instruments and methods, etc., can solve the problems of difficult control and repetition, complicated operation, etc., and achieve easy control and Repeatability, ease of operation, enhanced stability effects

Inactive Publication Date: 2017-05-31
BEIJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Rearrangement Method of Layered Rare Earth Hydroxide Nanosheets and Composite Prepared
  • Rearrangement Method of Layered Rare Earth Hydroxide Nanosheets and Composite Prepared

Examples

Experimental program
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Effect test

Embodiment 1

[0039] According to the method described in the literature above, DS was prepared - - LTbH complex nanosheet colloidal suspension.

[0040] DS - - After the nanosheet colloidal suspension of the LTbH complex was placed in a dialysis bag (M2M Biological Technology Company Limited, model MD34-5M), the dialysis bag was placed in water and stirred for 12 hours. Centrifugation, the parameters of the centrifugation operation can be 10000rpm, the centrifugation time is 3 minutes, and the water is washed 5 times to obtain DS - -LTbH complex nanosheet rearrangement complex.

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

Embodiment 2

[0043] According to the method described in the literature above, DS was prepared - - LEuH complex nanosheet colloidal suspension.

[0044] DS - - After the nanosheet colloidal suspension of the LEuH complex was placed in a dialysis bag ((M2M Biological Technology Company Limited, model MD34-5M), the dialysis bag was placed in water and stirred for 8 hours. After the stirring was completed, the material in the dialysis bag was Carry out centrifugation, the parameter of centrifugation operation can be 10000rpm of rotating speed, centrifugation time is 3 minutes, washes with water 5 times, obtains DS - -LEuH complex nanosheet rearrangement complex.

Embodiment 3

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

[0047] (1) 0.8mmol EuCl 3 ·6H 2 O and 0.2 mmol TbCl 3 ·6H 2 O, 3mmol SDS (sodium dodecyl sulfate) and 1mmol HMT (hexamethylenetetramine) were added to a 100mL hydrothermal kettle, and 80mL exhausted water was added, sealed and heated at 90°C for 12h, then cooled to room temperature Finally, the sample was centrifuged at 15,000 rpm for 3 minutes, washed alternately with degassed water and absolute ethanol for 4 times, and then dried naturally in the air to obtain 1.8 g of the complex.

[0048] (2) Disperse 0.1g of solid powder in a conical flask filled with 50ml of formamide, pass N 2 20min. Then the Erlenmeyer flask was sealed and left to stand for 2.5 days in an incubator at 40° C. 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 dialysis bag (M2M Biological Technology Comp...

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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 rearrangement method of layered rare earth hydroxide nanosheets and a composite prepared therefrom. Background technique [0002] Layered rare earth hydroxides (LRHs), as a new type of inorganic layered compounds, provide a great opportunity for the design and synthesis of new functional materials due to the unique physical and chemical properties of rare earth ions on the layer and the characteristics that the anions between layers can be exchanged. More opportunities, since Gandara et al. reported in 2006, it has quickly become a research hotspot. At the same time, due to the unique 4f layer electrons of rare earth elements, layered rare earth hydroxides have 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 rar...

Claims

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Application Information

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Patent Type & Authority Patents(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