Ag2Nb4O11 nano-textured sheet particle and preparation method thereof

An ag2nb4o11 and flake particle technology is applied in the field of Ag2Nb4O11 nano-textured flake particles and their preparation, which can solve the problems of high requirements for preparation conditions, difficult control of particle morphology and microstructure, and complicated steps, and achieves simple and repeatable operation. High performance and mild reaction conditions

Active Publication Date: 2016-06-15
重庆泛锐科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ag prepared above 2 Nb 4 o 11 The methods are all solid-phase methods, which require high-temperature calcination, require high

Method used

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  • Ag2Nb4O11 nano-textured sheet particle and preparation method thereof
  • Ag2Nb4O11 nano-textured sheet particle and preparation method thereof
  • Ag2Nb4O11 nano-textured sheet particle and preparation method thereof

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Example Embodiment

[0026] A kind of Ag disclosed by the invention 2 Nb 4 O 11 The preparation method of nano-textured flake particles includes the following steps:

[0027] Step 1. According to the ratio of 1g:80~150ml, the layered structure H 4 Nb 6 O 17 The flake particles are added to AgNO with a concentration of 0.05~0.5mol / L 3 After stirring for 12-24 hours in the solution, filter and wash to obtain a precipitate.

[0028] Step 2. To make the layered structure H 4 Nb 6 O 17 H in flake particles + After being fully exchanged, add the precipitate obtained in step 1 to 80-150ml fresh 0.05-0.5mol / L AgNO at the ratio of 1g:80~150ml again 3 After stirring for 12-24 hours in the solution, filter and wash again to obtain a precipitate. After this step is repeated 2 to 4 times (each time the precipitate prepared in the previous step is used as the reaction material), the layered structure Ag is finally obtained after drying 3 HNb 6 O 17 .

[0029] Step 3. The Ag obtained in step 2 3 HNb 6 O 17 Heat treatme...

Example Embodiment

[0032] Example 1

[0033] A kind of Ag 2 Nb 4 O 11 The preparation method of nano-textured flake particles includes the following steps:

[0034] Step 1: Take 1.0g of layered structure H 4 Nb 6 O 17 , Added to 80ml AgNO with a concentration of 0.05mol / L 3 In the solution, stir for 12h, then filter and wash to obtain a precipitate.

[0035] Step 2: To make the layered structure H 4 Nb 6 O 17 H in flake particles + After being fully exchanged, add the precipitate obtained in step 1 to 80ml of fresh AgNO with a concentration of 0.05mol / L 3 After stirring for 12h in the solution, filter, wash, and dry to finally obtain layered Ag 3 HNb 6 O 17 .

[0036] Step 3: The Ag obtained in step 2 3 HNb 6 O 17 Heat treatment at 400℃ for 2h to obtain Ag 2 Nb 4 O 11 Nano-textured flake particles.

[0037] Ag obtained in this example 2 Nb 4 O 11 The average length of the nano-textured flake particles is 2 μm, the average width is 1 μm, and the average size of the nanocrystals constituting the flake parti...

Example Embodiment

[0038] Example 2

[0039] A kind of Ag 2 Nb 4 O 11 The preparation method of nano-textured flake particles includes the following steps:

[0040] Step 1: Take 1.0g of layered structure H 4 Nb 6 O 17 , Added to 100ml AgNO with a concentration of 0.4mol / L 3 In the solution, stir for 12h, then filter and wash to obtain a precipitate.

[0041] Step 2: To make the layered structure H 4 Nb 6 O 17 H in flake particles + After being fully exchanged, add the precipitate obtained in step 1 again to 100ml of fresh AgNO with a concentration of 0.4mol / L 3 After stirring for 12 hours in the solution, filter and wash again to obtain a precipitate. After this step is repeated twice (each time the precipitate prepared in the previous step is used as the reaction material), the layered structure Ag is finally obtained after drying 3 HNb 6 O 17 .

[0042] Step 3: The Ag obtained in step 2 3 HNb 6 O 17 Heat treatment at 500℃ for 4h to obtain Ag 2 Nb 4 O 11 Nano-textured flake particles.

[0043] Ag obtain...

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Abstract

Belonging to the technical field of nano-material preparation, the invention discloses an Ag2Nb4O11 nano-textured sheet particle and a preparation method thereof. The method includes the steps of: 1) adding layer structure H4Nb6O17 sheet particles into an AgNO3 solution according to a material-liquid ratio of 1g:80-150mL, fully stirring the substances to carry out reaction, then performing filtering, washing and drying to obtain precipitate; 2) adding the precipitate obtained in step 1) into a freshly prepared AgNO3 solution according to a material-liquid ratio of 1g:80-150mL, further stirring the substances fully to carry out reaction, then performing filtering, washing and drying to collect precipitate; 3) repeating the operation of step 2) 2-4 times to obtain layer structure Ag3HNb6O17; and 4) conducting heat treatment on the layer structure Ag3HNb6O17 at 400-800DEG C for 2-4h, thus obtaining Ag2Nb4O11 nano-textured sheet particles. The method provided by the invention is simple to operate and has high repeatability, and the sheet structure Ag2Nb4O11 prepared by the method has the advantages of good crystallization performance, high purity, and controllable shape and microstructure.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to an Ag 2 Nb 4 o 11 Nano-textured sheet-like particle and its preparation method. Background technique [0002] Silver Niobate Ag 2 Nb 4 o 11 It has a good ferroelectric polarization constant and is a widely used ferroelectric dielectric material. Ag 2 Nb 4 o 11 It can also be used as a photocatalytic material, which can degrade organic matter under light irradiation conditions and has excellent cycle performance. It is well known that the morphology and particle size of photocatalytic materials directly affect their photocatalytic ability. Therefore, how to control the morphology and microstructure has become a hot spot in the research of photocatalytic semiconductor materials. [0003] At present, Ag 2 Nb 4 o 11 The preparation method is mainly solid-phase method. HongjunDong et al. in HongjunDong, GangChen, JingxueSun, etal. 2 Nb 4 o 11 In [Che...

Claims

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Application Information

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IPC IPC(8): C01G33/00B82Y30/00
CPCC01G33/00C01P2002/72C01P2004/03C01P2004/04C01P2004/50C01P2004/61C01P2004/64
Inventor 孔新刚卢权黄剑锋吴建鹏殷立雄李嘉胤卢靖许占位
Owner 重庆泛锐科技有限公司
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