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Porous materials incorporating carbon black thin films, their applications and methods of preparation

A technology of structural materials and thin films, applied in metal material coating process, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of limiting the popularization and application of seawater desalination technology, unsatisfactory process efficiency, low energy utilization rate, etc., to achieve Produce fresh water with high efficiency, small footprint and low cost

Active Publication Date: 2021-08-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process efficiency of the existing seawater desalination technology is not ideal, the cost is high, and the energy utilization rate is low, which limits the popularization and application of seawater desalination technology

Method used

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  • Porous materials incorporating carbon black thin films, their applications and methods of preparation
  • Porous materials incorporating carbon black thin films, their applications and methods of preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this example, see figure 1 and figure 2 , a porous structure material with a nano-coating black film layer, using metal foil as a substrate, using anodizing process to treat the substrate, so that the surface of the substrate forms a nano-scale straight pore structure; A metal film is first deposited on the surface of the pore structure, and then a carbon black material is deposited to form a straight hole structure material having a composite material film of the metal film and the carbon black film. The metal foil used as the substrate is an Al foil made of high-purity aluminum with a purity of 99.99%. The shape of the pores of the nano-scale straight pore structure prepared by the anodization method is a vertical structure, and the size of the pores is 0.1 nanometers. The carbon black material is deposited on the surface of the straight hole to form a carbon black film with a thickness of 1 angstrom. A metal film is first deposited on the surface of the straig...

Embodiment 2

[0061] This embodiment is basically the same as the first embodiment, and the special features are:

[0062] In this embodiment, a method for preparing a porous material combined with a carbon black film includes the following steps:

[0063] a. This step is the same as the first embodiment;

[0064] b. Anodizing process is adopted. When the Al foil is treated by anodizing process, an acidic electrolyte, specifically sulfuric acid is used as the electrolyte for electrolysis; the nano-scale straight pores are formed on the surface of the Al foil by two anodic oxidation methods. Structure; when oxalic acid solution is used as electrolyte for anodic oxidation, the concentration of oxalic acid solution is 0.2~0.7mol·L -1 , the control electrolysis voltage is 40V, and the electrolysis reaction temperature is 10~25℃;

[0065] When the first anodic oxidation is carried out, the aluminum sheet is used as the anode, and the lead plate or stainless steel plate is used as the cathode. ...

Embodiment 3

[0071] This embodiment is basically the same as the previous embodiment, and the special features are:

[0072] In this embodiment, a method for preparing a porous material combined with a carbon black film includes the following steps:

[0073] a. This step is the same as the first embodiment;

[0074] b. Anodizing process is adopted. When the Al foil is treated by anodizing process, an acidic electrolyte, specifically sulfuric acid is used as the electrolyte for electrolysis; the nano-scale straight pores are formed on the surface of the Al foil by two anodic oxidation methods. Structure; when using phosphoric acid solution as electrolyte for anodic oxidation, the mass fraction of phosphoric acid solution is 10% to 30wt.%, the electrolysis voltage is controlled to be 10 to 100V, and the electrolysis reaction temperature is 10 to 20°C;

[0075]When the first anodic oxidation is carried out, the aluminum sheet is used as the anode, and the lead plate or stainless steel plate ...

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Abstract

The invention discloses a porous material combined with a carbon black film, its application and a preparation method. The carbon black on the nanotube is used to strengthen the desalination of saline water such as seawater and salt lake brine, and belongs to the fields of ocean, chemical industry and environment. A nanoscale straight hole structure is formed on the surface of the substrate by anodic oxidation, and then a carbon black material is deposited on the straight hole surface by physical vapor deposition; or a metal film is first deposited on the straight hole structure, and then the carbon black material is deposited. Then the composite material is floated on the surface of seawater and other saline water, and the sun shines on the nano-blackened straight-pore structure to strengthen the evaporation of seawater or other saltwater, thereby achieving high-efficiency seawater or other saltwater desalination processes.

Description

technical field [0001] The invention relates to a nanometer composite material, its application and its preparation method, in particular to a nanometer porous composite material, its application and its preparation method, which are applied to the fields of nanometer material, composite material, marine and chemical industry and environmental technology. Background technique [0002] With the continuous development of social economy, the global demand for water resources continues to grow. However, due to the influence of natural environment and climate change, regional freshwater resources are becoming more and more scarce, especially in arid and semi-arid areas, coastal and In the island area, the water shortage is even more serious. In order to alleviate the crisis of water resources, my country is actively developing and utilizing unconventional water sources such as seawater while implementing water conservation. Luan Weixin et al. proposed that seawater desalination ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/02C23C14/06C23C14/16C25D11/12C25D11/08C25D11/10C23C14/24C25D11/32
CPCC23C14/0605C23C14/16C23C14/24C25D11/02C25D11/08C25D11/10C25D11/12C25D11/32
Inventor 朱萍李祖良钱光人王杨君
Owner SHANGHAI UNIV
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