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A kind of direct preparation method of rare earth layered hydroxide film

A layered hydroxide and thin film technology, applied in the field of materials science, can solve the problems of affecting the film quality, time-consuming, difficult intercalation, etc., and achieve the effects of good film quality, long time-consuming, and short time-consuming

Active Publication Date: 2019-11-26
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the preparation of LRH transparent fluorescent films needs to go through the steps of synthesis, intercalation pillars, peeling, and film assembly. The whole process takes a long time and consumes a lot of energy and power in each step. Moreover, incomplete intercalation and the breakage of nanosheets caused by mechanical action during the stripping process greatly affect the quality of the film.

Method used

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  • A kind of direct preparation method of rare earth layered hydroxide film
  • A kind of direct preparation method of rare earth layered hydroxide film
  • A kind of direct preparation method of rare earth layered hydroxide film

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Experimental program
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Effect test

Embodiment 1

[0026] The nitric acid compound of the rare earth element (Ln) used in this embodiment, the additive NH 4 NO 3 All commercially available analytical pure chemical reagents.

[0027] Concrete preparation steps are as follows:

[0028] (1) Set Y(NO 3 ) 3 ·6H 2 O is dissolved in deionized water to prepare a rare earth ion solution with a total concentration of rare earth ions of 0.02mol / L, and then add the additive NH 4 NO 3 , wherein the molar ratio of the amount of the additive to the rare earth ion is 10:1, and the electrodeposition solution is obtained after mixing evenly;

[0029] (2) Place the electrodeposition solution prepared in step (1) in a water bath, stir to make the temperature of the electrodeposition solution reach 30° C., and obtain a standby electrodeposition solution;

[0030] (3) ITO glass is used as the working electrode, the cathode, and the Pt mesh is used as the counter electrode, the anode. Ag / AgCl / Cl - The electrode is used as a reference electro...

Embodiment 2

[0035] The nitric acid compound of the rare earth element (Ln) used in this embodiment, the additive NH 4 NO 3 All commercially available analytical pure chemical reagents.

[0036] Concrete preparation steps are as follows:

[0037] (1) Pr(NO 3 ) 3 ·6H 2 O was dissolved in deionized water to prepare a rare earth ion solution with a rare earth ion concentration of 0.01mol / L, and then the additive NH 4 NO 3 , wherein the molar ratio of the amount of the additive to the rare earth ion is 20:1, and the electrodeposition solution is obtained after mixing uniformly;

[0038] (2) Place the electrodeposition solution prepared in step (1) in a water bath, stir to make the temperature of the electrodeposition solution reach 40°C, and obtain a standby electrodeposition solution;

[0039] (3) The sheet material of FTO glass is used as the working electrode, that is, the cathode, and the Pt mesh is used as the counter electrode, that is, the anode, and Ag / AgCl / Cl - The electrode i...

Embodiment 3

[0044] The nitric acid compound of the rare earth element (Ln) used in this embodiment, the additive NH 4 NO 3 All commercially available analytical pure chemical reagents.

[0045] Concrete preparation steps are as follows:

[0046] (1) Eu(NO 3 ) 3 ·6H 2 O is dissolved in deionized water to prepare a rare earth ion solution with a rare earth ion concentration of 0.01mol / L, and then add the additive NaNO 3 , wherein the molar ratio of the amount of the additive to the rare earth ion is 5:1, and the electrodeposition solution is obtained after mixing uniformly;

[0047] (2) Place the electrodeposition solution prepared in step (1) in a water bath, stir to make the temperature of the electrodeposition solution reach 30° C., and obtain a standby electrodeposition solution;

[0048] (3) The sheet material of ITO glass is used as the working electrode, that is, the cathode, and the Pt mesh is used as the counter electrode, that is, the anode, and Ag / AgCl / Cl - The electrode i...

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Abstract

The invention discloses a Ln 2 (OH) 5 NO 3 ·nH 2 A Direct Preparation Method for O Rare Earth Layered Hydroxide Thin Films. Ln(NO 3 ) 3 ·6H 2 O is dissolved in deionized water to prepare a rare earth ion solution with a rare earth ion concentration of 0.005-1mol / L, then add additives, and mix well to obtain an electrodeposition solution, which is placed in a water bath to make the temperature reach the required temperature; during electrodeposition A three-electrode system was inserted into the solution, and a film was deposited on the working electrode by electrodeposition reaction. The film was rinsed with deionized water and absolute ethanol respectively, and then dried in a blast drying oven to obtain Ln 2 (OH) 5 NO 3 ·nH 2 O film. The invention is simple to operate, compared with the traditional method of making powder first and then forming a film, it greatly simplifies the film preparation method, and at the same time avoids the influence of powder morphology on the quality of film formation; and the method provided by the invention is simple to operate and time-consuming Short, good film quality.

Description

technical field [0001] The invention belongs to the technical field of materials science, in particular to a kind of Ln 2 (OH) 5 NO 3 ·nH 2 Direct Preparation Method of O Rare Earth Layered Hydroxide Thin Films Background technique [0002] The general formula is Ln 8 (OH) 20 (Am - ) 4 / m·nH 2 The rare earth layered hydroxide of O(Ln: rare earth ion; A: charge balance anion; m=1-3; n=6-7) is a new type of anionic layered compound, which also has the structure of a layered compound The characteristics and optical, electrical, and magnetic properties of rare earth materials are ideal building blocks for transparent fluorescent films used in optoelectronic devices. [0003] The current methods for preparing LRH nanosheets include hydrothermal synthesis, homogeneous precipitation, and low temperature and atmospheric pressure precipitation. Among them, the temperature used in the hydrothermal method and the homogeneous precipitation method is relatively high (100-200°C)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/08B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C25D9/08
Inventor 武晓鹂黄俊杰周杰伟蓝晶月唐晓玲潘冰冰张铁
Owner GUILIN UNIVERSITY OF TECHNOLOGY