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Nano-particle system and preparation system and application of nano-particle system

A technology of nanoparticles and butterfly wings, applied in the field of preparation of light energy absorbers, to achieve remarkable photoelectric conversion performance, high-efficiency light-to-heat conversion performance, high absorption and anti-reflection performance

Active Publication Date: 2014-02-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of preparing functional materials using organisms as templates has been widely used, but the large-scale preparation of noble metal-chalcogenide semiconductor coupled nanoparticle films combined with butterfly wing anti-reflection microstructures has not been reported.

Method used

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  • Nano-particle system and preparation system and application of nano-particle system
  • Nano-particle system and preparation system and application of nano-particle system
  • Nano-particle system and preparation system and application of nano-particle system

Examples

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Effect test

Embodiment 1

[0052] The preparation method of the Au-CuS nanoparticle system of this embodiment comprises the following steps:

[0053] (1) Select the forewing of Papilion butterfly as the butterfly wing with anti-reflection microstructure;

[0054] (2) Perform the following pre-treatment and activation treatment on the forewings of the selected Papilionidae: first, soak the wings in absolute ethanol for 30 minutes, and then wash them with deionized water; then soak the wings in 15vol% HNO 3 Put it in the solution for 2 hours, take it out and wash it; then soak the butterfly wings in 40% ethylenediamine absolute ethanol solution for 6 hours, then take it out, and wash it several times with deionized water; the above steps are used to remove pigments and impurities , and improve its surface adsorption properties;

[0055] (3) Deposition of Au nanoparticles: The activated butterfly wings were immersed in the chloroauric acid precursor solution at a constant temperature of 30°C for 4 hours,...

Embodiment 2

[0070] The preparation method of the Au-CdS nanoparticle system of the present embodiment comprises the following steps:

[0071] (1) Select the forewing of Papilion butterfly as the butterfly wing with anti-reflection microstructure;

[0072] (2) Perform the following pretreatment and activation treatment on the selected forewings of Papilionidae: first, soak the wings in absolute ethanol for 15 minutes, and then wash them with deionized water; then soak the wings in 5vol% HNO 3 Put it in the solution for 2 hours, take it out and wash it; then soak the butterfly wings in 10% ethylenediamine absolute ethanol solution for 6 hours, then take it out and wash it several times with deionized water; the above steps are used to remove pigments and impurities , and improve its surface adsorption properties;

[0073] (3) Deposition of Au nanoparticles: immerse the activated butterfly wings in the chloroauric acid precursor solution at a constant temperature of 15 °C for 10 h, then ta...

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Abstract

The invention discloses a nano-particle system with an antireflection microstructure and a preparation method of the nano-particle system as well as a method for preparing an optical energy absorber of a solar heat collector by using the nano-particle system and the solar heat collector. The method for preparing the nano-particle system comprises the steps of selecting and preprocessing of butterfly wings, settling of precious metal nano-particles, settling of sulfur group semiconductor nano-particles and the like. Large scale is realized by the prepared nano-particle system, and the nano-particle system has the antireflection microstructure of the butterfly wings. The anno-particle system has high-absorption and reflection performance nearly in the whole solar spectral band, has excellent photothermal converting performance and has the photothermal conversion efficiency of 30.56%, and the solar energy absorption ratio of the optical energy absorber of the solar heat collector prepared by the nano-particle system can achieve 98%.

Description

technical field [0001] The invention relates to a nanoparticle system with an anti-reflection microstructure prepared by using butterfly wings as a structure-guiding template and a preparation method, as well as a solar heat collector prepared by using the nanoparticle system and a light energy absorber of the solar heat collector method of preparation. Background technique [0002] The relatively mature nanoparticle film system preparation methods include chemical vapor deposition (CVD), ion sputtering, high-energy ball milling, electroplating deposition and plasma arc and other methods. However, there are some defects in the above methods, such as high energy consumption, low output, poor morphology of prepared products, uneven particle size, difficulty in preparing multi-component coupling nanoparticles, and difficulty in coupling submicron structures. The promotion and application of these preparation methods are limited to a certain extent. Therefore, finding a simple...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/02B82Y40/00B82Y20/00F24J2/48
CPCY02E10/40
Inventor 张旺田军龙黄亦樵王宇安张荻
Owner SHANGHAI JIAO TONG UNIV
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