Conical alumina template for preparing nanomaterials and preparation method thereof
An alumina template and nanomaterial technology, which is applied in chemical instruments and methods, polycrystalline material growth, chemically reactive gases, etc., can solve the problems of unfavorable nanomaterial deviceization, single function of nanomaterials, etc., and achieves simple operation, The effect of excellent optical performance
Inactive Publication Date: 2018-02-23
SHANDONG JIANZHU UNIV
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Problems solved by technology
[0003] However, regarding the alumina template, the planar alumina template is currently used, that is, its upper and lower surfaces are flat, which is not conducive to the realization of functional devices of nanomaterials.
Not only that, the nanoholes in the planar alumina template are straight and arranged in parallel, and the nanomaterials assembled with this template have a single function
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[0023] The inner and outer sides of the conical alumina template in this embodiment are conical surfaces, with the axis of the conical surface as the center, the conical nanoholes are arranged radially along the conical surface in an orderly manner, and the aperture size and diameter of the conical nanopores The rate of change is gradual in two dimensions (axial and radial directions of the conical template), and can also be adjusted by changing the anodizing time. The dotted lines in the figure represent the axial direction and radial direction of the conical template respectively.
[0024] For the alumina template in this example, the specific steps of its preparation method are:
[0025] (1) Wrap the flat high-purity aluminum sheet on the surface of the cone mould, and obtain a conical aluminum sheet after forging and pressing, or vacuum evaporate aluminum on the surface of the cone mold and then remove the cone mold to obtain a conical aluminum sheet ;
[0026] (2) The c...
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A conical aluminum oxide template for preparing nanomaterials and a preparation method thereof. It is characterized in that the inner and outer sides of the template are conical surfaces, and the conical nanohole array is centered on the axis of the conical surface, arranged radially along the radial direction of the conical surface, and gradually changing the radius of the conical surface from the top to the bottom of the alumina template. The size and rate of change of the diameter of the conical nanopore gradually change in the two-dimensional directions of the radial direction and the axial direction of the conical surface. The preparation method is to obtain the conical high-purity aluminum sheet through polishing, anodic oxidation, and removal of the barrier layer. The conical alumina template in the present invention provides a convenient approach for the synthesis of nanometer materials, and its preparation method is simple and feasible.
Description
Technical field: [0001] The invention relates to a conical aluminum oxide template for preparing nanometer materials and a preparation method of the template. Background technique: [0002] With the continuous development of science and technology, many new disciplines continue to emerge. Nanomaterials is one example. The preparation of nanomaterials is the basis for the application of nanomaterials. At present, the methods used to prepare nanomaterials are: template method, vapor deposition method, photolithography method, liquid phase method, ion beam etching method and so on. The template method is one of the most basic methods. At present, there are about four mature templates: carbon nanotubes, ion beam etched carbon films, biological micromicelles and alumina templates. Alumina templates have become one of the most widely used templates due to their high pore density and adjustable nanopore aspect ratio (pore length / pore diameter). It is a nano-hole array system o...
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IPC IPC(8): C30B30/02C30B23/04C30B25/04C30B29/62
Inventor 庞岩涛赵俊卿张美生张宝金李鲁艳庄世栋王婕王惠临
Owner SHANDONG JIANZHU UNIV