Method for preparing aluminate nanowire array

A nanowire array and aluminate technology, which is applied in the field of preparing aluminate nanowire arrays, to achieve the effect of a large number of products, ingenious principles, and simple heating equipment

Inactive Publication Date: 2017-08-04
CHINA PHARM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For Bi 2 al 4 o 9 , the previously prepared Bi 2 al 4 o 9 The morphology of the material is mainly ceramic powder, and its nanowires are rarely reported, let alone its nanowire arrays.

Method used

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  • Method for preparing aluminate nanowire array
  • Method for preparing aluminate nanowire array
  • Method for preparing aluminate nanowire array

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Zinc aluminate (ZnAl 2 o 4 ) nanowire array

[0041] Zinc nitrate hexahydrate and treated double-pass anodized aluminum template were used as initial reactants. During the preparation, firstly, the double-pass anodized aluminum template is kept vertical as much as possible and fixed into a ceramic crucible with a volume of 50ml. Then, take an appropriate amount of zinc nitrate hexahydrate, grind it evenly in agate, and gently transfer it to a ceramic crucible to bury the anodized aluminum template. Finally, put the ceramic crucible containing the reactants into the muffle furnace. The muffle furnace was slowly raised from room temperature to 350°C at a rate of 5°C / min and kept for 5 hours, then cooled naturally. After the muffle furnace is cooled to room temperature, take out the anodized aluminum template after the reaction, soak it in dilute hydrochloric acid, and then the anodized aluminum template becomes white and transparent, and use 5mol / L hot NaOH solution t...

Embodiment 2

[0043] Bismuth aluminate (Bi 2 Al 4 o 9 ) nanowire array

[0044] Bismuth nitrate pentahydrate and treated double-pass anodized aluminum template are used as initial reactants. During the preparation, firstly, the double-pass anodized aluminum template is kept vertical as much as possible and fixed into a ceramic crucible with a volume of 50ml. Then, take an appropriate amount of bismuth nitrate pentahydrate, grind it evenly in agate, gently transfer it to a ceramic crucible, and bury the anodized aluminum template. Finally, put the ceramic crucible containing the reactants into the muffle furnace. The muffle furnace was slowly raised from room temperature to 650°C at a rate of 5°C / min and kept for 10 hours, then cooled naturally. After the muffle furnace is cooled to room temperature, take out the anodized aluminum template after the reaction, soak it in dilute hydrochloric acid, and turn the anodized aluminum template into light yellow, and use 5mol / L hot NaOH solution ...

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Abstract

The invention discloses a method for preparing an aluminate nanowire array. According to the preparation process, column-wise and limitation effects of ducts of anodic alumina templates are adopted, and more importantly, the anodic alumina templates are used as a reactant. The method comprises the steps of by adopting the anodic alumina templates with proper parameters and bi-pass structures, firstly heating to melt metal nitrate with an oxide with relatively strong diffusivity into fluid, injecting the fluid into the nano-scale ducts of the anodic alumina templates by virtue of a capillary action, heating to decompose the fluid into metal oxide, finally carrying out annealing at a high temperature for a certain time to generate solid-phase diffusion reaction between the metal oxide in the ducts and the templates, cooling, removing un-reacted templates, and obtaining the one-dimensional aluminate nanowire array by virtue of the column-wise effect of the ducts of the templates. The method has multiple advantages that the principle is skillful; the preparation quantity is large, the speed is high; the raw materials are simple, and the equipment requirements are not high; and the operation is simple, the preparation process is safe, and the like.

Description

technical field [0001] The invention relates to a method for preparing an aluminate nanowire array, belonging to the technical field of nanomaterial preparation. Background technique [0002] Due to the large aspect ratio and the limitation in specific directions, the preparation of one-dimensional nanomaterials is still a hot topic. One-dimensional nanomaterials not only allow us to study the electrical, magnetic, optical, thermal and mechanical properties of materials in a specific dimension, but they are also an important interconnection and functional unit for the preparation of nanodevices. However, generally speaking, the development of its preparation technology is still relatively slow, because many problems such as precise control of dimension, growth direction, purity of phase, and composition of components need to be solved during the preparation process. [0003] Metal oxides are an important class of functional materials with many special properties, and are th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02C01G9/00C01G29/00B82Y40/00
CPCC01F7/02C01G9/00C01G29/00C01P2002/72C01P2004/03C01P2004/04C01P2004/16
Inventor 韩东强
Owner CHINA PHARM UNIV
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