Co3O4 nanosheet-loaded stainless steel mesh as well as preparation method and application thereof

A stainless steel mesh and nanosheet technology is applied in the field of Co3O4 nanosheet supported stainless steel mesh and its preparation, which can solve the problems of high cost, low photothermal conversion efficiency, complicated preparation process, etc. The effect of good conversion characteristics and high water evaporation efficiency

Pending Publication Date: 2022-03-11
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides a Co 3 o 4 Nanosheet-loaded stainless steel mesh and its preparation method and application to solve the technical problems of low photothermal conversion efficiency, complex preparation process and high cost of traditional photothermal conversion materials

Method used

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  • Co3O4 nanosheet-loaded stainless steel mesh as well as preparation method and application thereof
  • Co3O4 nanosheet-loaded stainless steel mesh as well as preparation method and application thereof
  • Co3O4 nanosheet-loaded stainless steel mesh as well as preparation method and application thereof

Examples

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preparation example Construction

[0042] The invention provides a Co 3 o 4 The preparation method of nanosheet-loaded stainless steel mesh specifically comprises the following steps:

[0043] Step 1. Stainless steel mesh pretreatment

[0044] Step 11, take 120-400 mesh 304 stainless steel mesh, and cut the stainless steel mesh into a square structure of 40mm×40mm;

[0045] Step 12, immerse the square stainless steel mesh in step 11 into acetone, and ultrasonically clean it to remove organic impurities on the surface of the stainless steel mesh to obtain a stainless steel mesh that removes organic impurities; wherein, the ultrasonic cleaning time is 20-30min, and the ultrasonic power is 100 -120W;

[0046] Step 13, immerse the stainless steel mesh from which organic impurities have been removed in a hydrochloric acid solution, and perform ultrasonic cleaning to remove oxide impurities on the surface of the stainless steel mesh to obtain a stainless steel mesh from which oxides have been removed; wherein, the...

Embodiment 1

[0058] Embodiment 1 provides a Co 3 o 4 The preparation method of nanosheet-loaded stainless steel mesh specifically comprises the following steps:

[0059] Step 1. Stainless steel mesh pretreatment

[0060] Step 11, take 120-mesh 304 stainless steel mesh, and cut the stainless steel mesh into a square structure of 40mm×40mm;

[0061] Step 12, immerse the square stainless steel mesh in step 11 in acetone, and perform ultrasonic cleaning to remove organic impurities on the surface of the stainless steel mesh to obtain a stainless steel mesh from which organic impurities are removed; wherein, the ultrasonic cleaning time is 30 minutes, and the ultrasonic power is 100W;

[0062] Step 13, immerse the stainless steel mesh for removing organic impurities into a hydrochloric acid solution with a concentration of 3%, and perform ultrasonic cleaning to remove oxide impurities on the surface of the stainless steel mesh to obtain a stainless steel mesh for removing oxides; wherein, the...

Embodiment 2

[0077] The difference from Example 1 is that: according to the preparation method of Example 1, the stainless steel mesh aperture is adjusted to 200 mesh or 400 mesh, and other conditions remain unchanged; the Co prepared in Example 2 3 o 4 Nanosheet-loaded stainless steel mesh, Co 3 o 4 The nanosheets are phase-pure spinel-type Co 3 o 4 , and the shape and attached figure 1 Similarly, the corresponding properties of the light-to-heat conversion stainless steel mesh obtained in Example 1 can be achieved.

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Abstract

The invention discloses a Co3O4 nanosheet-loaded stainless steel mesh and a preparation method and application thereof.The method comprises the steps that 1, a cobalt hydroxide nanosheet array is deposited on the surface of the stainless steel mesh through an electrochemical deposition method, and the stainless steel mesh deposited with the cobalt hydroxide nanosheet array is obtained; and step 2, calcining the stainless steel mesh deposited with the cobalt hydroxide nanosheet array to obtain the Co3O4 nanosheet loaded stainless steel mesh, the Co3O4 has excellent photo-thermal conversion characteristic and good thermal conductivity, so that the Co3O4 can efficiently absorb solar energy and can timely conduct out converted heat energy. Meanwhile, the contact area with water can be increased through the nanosheet structure, and therefore the steam generation efficiency is improved. Compared with an existing photo-thermal material, the material is high in water evaporation efficiency and good in stability, and the preparation method is simple, low in cost and easy for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of light-to-heat conversion materials, in particular to a Co 3 o 4 Nanosheet-loaded stainless steel mesh and its preparation method and application. Background technique [0002] With the rapid increase of the population on the earth and the rapid development of industrial production, the consequent shortage of fresh water resources has become one of the global crises faced by mankind. Now 9% of the world's population does not have access to safe fresh water resources, and 29% of the world's population does not have access to safe drinking water. According to the World Health Organization, by 2025, half of the world's population will live in water-stressed areas. Although 2 / 3 of the Earth's surface is covered by water, 97% is undrinkable seawater; therefore, how to desalinate seawater conveniently and efficiently has aroused widespread interest among researchers. [0003] Commonly used seawater desalinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04F22B1/00B82Y40/00
CPCC25D9/04B82Y40/00F22B1/006C25D9/10C23G1/08C23G5/02864C23G5/02874C23G5/024
Inventor 任小虎崔姗姗尹洪峰杨春利袁蝴蝶
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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