Photothermal conversion material and application thereof in seawater desalination and salt recovery

A light-to-heat conversion material and heat insulation layer technology, applied in the fields of material chemistry and solar energy conversion, can solve the problems of low mechanical strength and high cost of materials, achieve high chemical and structural stability, low preparation cost, and high solar energy conversion efficiency Effect

Pending Publication Date: 2021-07-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the prepared material has low mechanical strength and high cost

Method used

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  • Photothermal conversion material and application thereof in seawater desalination and salt recovery
  • Photothermal conversion material and application thereof in seawater desalination and salt recovery
  • Photothermal conversion material and application thereof in seawater desalination and salt recovery

Examples

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Effect test

Embodiment 1

[0057] A method for preparing a photothermal conversion material, comprising the following steps: substrate cleaning, growth reaction, vulcanization reaction, and drying. Soak the commercial glass fiber membrane in 1M hydrochloric acid solution containing 0.4wt% aniline monomer, add 20mL of 2wt% ammonium persulfate aqueous solution dropwise to the solution, and react at 0°C for 3h to obtain a glass fiber membrane with a polyaniline layer . After washing and drying the glass fiber membrane, put it into an ethanol solution containing cobalt chloride (0.27wt%), nickel chloride (0.2wt%) and urea (0.11wt%) for hydrothermal reaction, and the reaction temperature is 130°C. The time is 6h, so that the continuous sheet-like cobalt-nickel precursor is generated in situ on the surface of the glass fiber. Finally, wash and dry the prepared fiber membrane and vulcanize it in a tube furnace. The sulfur powder and the glass fiber membrane are placed side by side, the sulfur powder is locate...

Embodiment 2

[0060] Cut the industrial glass fiber cloth into a square of 3cm in length and width, wash and dry it, soak it in 1M hydrochloric acid solution containing 0.4wt% aniline monomer, add 20mL of 2wt% ammonium persulfate aqueous solution to the solution dropwise, and react at 0°C for 3h , to obtain a glass fiber cloth with a polyaniline layer grown on it. After the glass fiber cloth obtained after the reaction is washed and dried, put into the ethanol solution containing cobalt chloride (0.27wt%), nickel chloride (0.2wt%) and urea (0.11wt%) to carry out hydrothermal reaction, and the reaction temperature is 130 ℃, the reaction time is 6h, so that the continuous sheet-like cobalt-nickel precursor is generated in situ on the surface of the glass fiber. Finally, the prepared glass fiber cloth was washed and dried, and vulcanized in a tube furnace. The sulfur powder and glass fiber cloth were placed side by side, and the sulfur powder was located on the side near the air inlet. The rea...

Embodiment 3

[0063] Soak the glass fiber membrane in 40mL of 0.5M hydrochloric acid solution containing 1wt% aniline monomer, add 10mL of 2wt% ammonium persulfate aqueous solution dropwise to the solution, and react at 0°C for 6h to obtain a glass fiber membrane with a polyaniline layer . After the glass fiber membrane is washed and dried, it is put into an ethanol solution containing cobalt chloride (0.27wt%), nickel chloride (0.2wt%) and urea (0.11wt%) for hydrothermal reaction. The reaction temperature is 130 ° C, and the reaction time is 6h, so that the continuous sheet-like cobalt-nickel precursor is generated in situ on the surface of the glass fiber. Finally, the prepared fiber membrane was washed and dried, and vulcanized in a tube furnace. The sulfur powder and the glass fiber membrane were placed side by side, and the sulfur powder was located on the side near the air inlet. Fiber-film light-to-heat conversion materials.

[0064] The glass fiber film photothermal material has a...

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Abstract

The invention discloses a photothermal conversion material and application thereof in seawater desalination and salt recovery, and belongs to the technical field of material chemistry and solar energy conversion. The photothermal conversion film material comprises a glass fiber film, wherein a compact polyaniline layer and a porous honeycomb cobalt-nickel sulfide are sequentially grown on the surface of glass fiber in situ. Simulated seawater containing different salt concentrations is in contact with a metal sulfide-based photothermal conversion film material, and the photo-thermal conversion material is irradiated by set light, so that the metal sulfide-based photothermal conversion material performs photothermal conversion and generates heat energy, water in the seawater is promoted to evaporate, salt crystals are deposited on the surface of the photothermal film in a salt ring form, and continuous and efficient seawater desalination treatment and salt recovery are realized. The bimetallic sulfide photothermal conversion film material has the advantages of high specific surface area, high light absorptivity, high weather resistance and high solar energy conversion efficiency, and long-acting solar energy desalination can be realized due to the unique structural design of the bimetallic sulfide photothermal conversion film material.

Description

technical field [0001] The invention relates to a photothermal conversion material and its application in seawater desalination and salt recovery, and belongs to the technical fields of material chemistry and solar energy conversion. Background technique [0002] With the increasingly serious environmental pollution and water shortages caused by subsequent changes, and with the continuous deepening of the five development concepts of innovation, coordination, openness, greenness and sharing in the world, how to better realize the supply of fresh water resources and the full utilization of energy has become an issue. How to improve the energy structure and make full use of green energy has become the development strategic goal of countries all over the world. Therefore, the development and utilization of clean and renewable new energy has become an urgent problem to be solved. [0003] Solar water evaporation is to convert the energy of solar energy into heat energy as much ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08Y02A20/212Y02A20/124Y02A20/142
Inventor 杜明亮应良日朱罕陆双龙段芳
Owner JIANGNAN UNIV
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