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Preparation method of foamed nickel-based photothermal conversion material

A light-to-heat conversion material and nickel foam technology, which is applied in the coating process of metal materials, etc., can solve the problems of high cost, large heat loss, and complicated preparation process, and achieve the effect of good bonding force

Active Publication Date: 2019-09-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of large heat loss due to the need to heat the liquid as a whole in the traditional light-to-heat conversion, and the problems of complicated preparation process, high cost and large floor space, and provide a foam Preparation method of nickel-based light-to-heat conversion material

Method used

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  • Preparation method of foamed nickel-based photothermal conversion material
  • Preparation method of foamed nickel-based photothermal conversion material
  • Preparation method of foamed nickel-based photothermal conversion material

Examples

Experimental program
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specific Embodiment approach 1

[0023] Specific implementation mode 1: This implementation mode is a preparation method of foamed nickel-based light-to-heat conversion material, which is completed according to the following steps:

[0024] 1. Nickel foam pretreatment

[0025] ①. First, immerse the nickel foam in hydrochloric acid for ultrasonication, then immerse it in deionized water for ultrasonication, and finally immerse it in absolute ethanol for ultrasonication;

[0026] ②. First, use absolute ethanol to clean the foamed nickel for 3 to 5 times, then use deionized water to clean the foamed nickel for 3 to 5 times, and finally use a hair dryer to dry the foamed nickel to obtain the pretreated foamed nickel;

[0027] 2. Solvothermal reaction:

[0028] 1. Disperse thiourea in absolute ethanol to obtain a supersaturated solution of thiourea in absolute ethanol;

[0029] ②. Transfer the supersaturated solution of thiourea in absolute ethanol to a high-pressure reactor lined with polytetrafluoroethylene, t...

specific Embodiment approach 2

[0034] Embodiment 2: The differences between this embodiment and Embodiment 1 are: the pore density of the nickel foam described in step ① is 110 ppi, and the thickness is 1.5 mm to 2 mm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the nickel foam described in step ① is a cylinder with a diameter of 3.6 cm. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a foamed nickel-based photothermal conversion material and relates to a preparation method of a photothermal conversion material. The invention aims to solve the problem of relatively great heat loss and complex preparation process, relatively high cost and relatively large occupied area as a liquid needs to be heated integrally in conventional photothermal conversion. The preparation method comprises the following steps: I, foamed nickel pre-treatment; and II, solvothermal reaction to obtain the foamed nickel-based photothermal conversion material. The photothermal conversion material prepared by means of a hydrothermal method is a semiconductor material in a flower-type structure formed by clustering a plurality of needle substances. The photothermal conversion material has relatively high absorptivity and can fully absorb light, the wavelengths of which are 0.25-2.5 [mu]. In addition, the material has excellent photothermal conversion performance and can fully convert absorbed light energy into heat energy and evaporate water on the surface of a microstructure of the material. The preparation method disclosed by the invention can be used for obtaining the foamed nickel-based photothermal conversion material.

Description

technical field [0001] The invention relates to a preparation method of a photothermal conversion material. Background technique [0002] With the development of society and the rapid growth of population, traditional resources such as coal, oil, and natural gas are rapidly consumed, and it is gradually difficult to meet the needs of people's survival and development. Solar energy has the characteristics of cleanness, safety, convenience and abundant sources, and has gradually attracted extensive attention from researchers in recent years. At present, the utilization of solar energy mainly includes photothermal, photovoltaic and photochemical fields. In photothermal conversion, using solar energy to heat water to generate steam is a green and brand-new way of utilizing solar energy, and has broad application prospects in seawater desalination. [0003] Due to the need to heat the liquid as a whole, the traditional light-to-heat conversion has a large heat loss, and has dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/58C23C22/78C23C22/73
CPCC23C22/58C23C22/73C23C22/78
Inventor 姚忠平于凯论李东琦李雪健姜兆华
Owner HARBIN INST OF TECH
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