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Composite material device

A technology of composite materials and devices, applied in metal material coating technology, thin material treatment, electrolytic coating, etc., can solve the problems of poor repeatability, low energy conversion efficiency, high production cost, etc., and achieve low cost, easy preparation, and environmental protection friendly effect

Active Publication Date: 2016-03-30
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional evaporative seawater desalination devices and methods have a series of shortcomings such as low energy conversion efficiency, poor repeatability, and high manufacturing cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Step 1: Prepare a porous alumina template (hereinafter referred to as NPT) by using a two-step anodic oxidation method. The preparation method includes: placing the aluminum foil in 0.3M phosphoric acid at 5°C for anodic oxidation, the oxidation voltage starts from 50V, increases by 10V every 2 minutes until 150V, and then maintains for 24 hours to complete the first oxidation. Then the aluminum oxide film formed by the first oxidation is dissolved, and the second oxidation is carried out under the same conditions as the first oxidation. After the second oxidation, after the second oxidation, put the aluminum foil with the porous aluminum oxide film into the mixed solution containing 1MCuCl2 and 0.1M HCl to dissolve the aluminum substrate. Finally, the porous alumina thin film membrane was moved into 5 wt% H 3 PO 4 , the hole was expanded at 30° C. for about 1 hour to obtain the NPT of Example 1.

[0137] figure 1 is a scanning electron micrograph of Au / NPT. The th...

Embodiment 2

[0147] (1) According to the method of Example 1, NPT was obtained.

[0148] (2) Deposit gold (Au) on the disordered surface of the above-mentioned NPT and the inner wall of the hole on the surface using an ion beam coating instrument GatanModel682. Specifically, the deposition vacuum is 5×10 -4 Pa, the electron gun voltage is 7Kev, the current is 300uA, and the deposition time is 16min. The obtained product is the composite material device of Example 2 (hereinafter referred to as Au / D-NPT).

[0149] The Au / D-NPT includes NPT and gold particles attached to the inner walls of the pores of the NPT, and the gold particles are distributed in the range of 0-2 microns from the surface to the inside of the disordered surface of the NPT. The Au / D-NPT may also include a gold layer covering the disordered surface of the NPT. The gold layer may only cover the region without pores on the disordered surface. The thickness of the gold layer is about 60-90 nanometers. The thickness of Au / D...

Embodiment 3

[0170] Step 1: The method of preparing NPT with an average pore diameter of about 200nm is as follows:

[0171]A porous alumina template (hereinafter referred to as NPT) was prepared by a two-step anodic oxidation method. The preparation method includes: placing the aluminum foil in 0.5M phosphoric acid at 5°C for anodic oxidation, the oxidation voltage starts from 50V, increases by 10V every 2 minutes until 150V, and then maintains for 24 hours to complete the first oxidation. Then the aluminum oxide film formed by the first oxidation is dissolved, and the second oxidation is carried out under the same conditions as the first oxidation. After the second oxidation, after the second oxidation, put the aluminum foil with the porous aluminum oxide film into the mixed solution of 1MCuCl2 and 0.1M HCl to dissolve the aluminum substrate. Finally, the porous alumina thin film membrane was moved into 5 wt% H 3 PO 4 , the hole was expanded at 30° C. for about 1 hour to obtain the NP...

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Abstract

The invention provides a composite material device. The device comprises a base body which is provided with a plurality of holes. A plurality of metal particles are attached to the inner walls of the holes. The particle diameters of the metal particles are 1-200 nanometers. The multiple metal particles have at least x different particle diameters d, and the x is greater than or equal to two. The composite material device has the high light absorption rate and the large light absorption bandwidth.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a composite material device. Background technique [0002] Optical absorbers are widely used in light / thermal detection, solar energy conversion, infrared imaging and other fields. The light absorptivity and the range of the absorption spectrum of the light absorber are the key factors to determine its performance. An ideal light absorber should have high light absorption in a wide spectral range, that is, low light transmittance and low light reflectance in a wide spectral range. [0003] Various light absorbers exist in the prior art, especially nanoplasmonic light absorbers. For example, optical absorbers with metallic metasurface structures, and optical absorbers with tapered structures, both of which broaden the bandwidth of the optical absorber through recombination of resonant modes. There is also a plasmonic light absorber with a crossed trapezoidal grati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/04C23C14/18
CPCC23C14/18C25D11/045C25D11/04C23C14/30C23C14/46Y10T428/26C02F1/14C02F2103/08C23C14/185
Inventor 朱嘉周林谭颖玲
Owner NANJING UNIV
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