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Wood-like black body material and preparation method and application thereof

A black body and imitation wood technology, applied in chemical instruments and methods, water/sludge/sewage treatment, seawater treatment, etc., can solve the problems of inapplicable thermal insulation performance, poor hydrophobicity, and affecting the tolerance of carbon-based systems, and achieve The effect of excellent solar absorption capacity, small performance attenuation, and excellent long-term evaporation stability

Active Publication Date: 2022-07-29
UNIV OF SCI & TECH OF CHINA
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  • Summary
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AI Technical Summary

Problems solved by technology

However, the inherent hydrophobicity and poor thermal insulation properties of carbon-based materials are not suitable for water transport and efficient thermal management. Although hydrophilicity can be achieved by inducing heteroatoms through surface modification or doping, the introduction of other materials is inevitable. Can affect the tolerance of carbon-based systems

Method used

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  • Wood-like black body material and preparation method and application thereof
  • Wood-like black body material and preparation method and application thereof
  • Wood-like black body material and preparation method and application thereof

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preparation example Construction

[0046] The invention provides a preparation method of a wood imitation black body material, comprising:

[0047] freezing and casting the mixed solution of carboxymethyl cellulose and sodium alginate to obtain a composite material;

[0048] The mixed solution of sodium alginate and carboxymethyl cellulose, polypyrrole and ammonium persulfate are reacted to obtain a reaction product;

[0049] The reaction product and the composite material are composited and then dried to obtain an intermediate product;

[0050] The intermediate product is calcified to obtain a wood-like black body material.

[0051] The invention provides a method for preparing a wood-like black body material that can be used for metal recovery and enrichment. First, a mixed solution of carboxymethyl cellulose and sodium alginate is frozen and cast on flat copper to prefabricate a wood-like parallel channel structure. ; Then add polypyrrole to the mixed solution of sodium alginate-carboxymethyl cellulose, ox...

Embodiment 1

[0103] Dissolve 1.0 g of sodium alginate powder and 1.0 g of carboxymethyl cellulose powder in 100 mL of deionized water, stir for 3 h, and then vacuum the solution to remove air bubbles to obtain CA solution. Pour liquid nitrogen into an insulated open container, put in a copper block, immerse the lower part of the copper block in liquid nitrogen, and expose the upper part to the air; take a copper sheet and place a polydimethylsiloxane mold on the upper part, Pour the CA solution of half the volume of the mold and place it on the copper block in liquid nitrogen; after the solution solidifies, a parallel channel structure similar to wood is obtained.

[0104] Take 50 mL of CA solution (the preparation method is the same as above), add 1.5 mL of polypyrrole, and stir for 0.5 h; take 0.4 g of ammonium persulfate and add it to 10 mL of deionized water, add the obtained ammonium persulfate solution to the CA solution, and stir for another 3 h. Until there is no lumpy gel in the s...

Embodiment 2

[0112] Take 2.0 g of sodium alginate powder and 1.0 g of carboxymethyl cellulose powder, dissolve in 100 mL of deionized water, stir for 3 h, and then vacuum the solution to remove air bubbles to obtain CA solution. Pour liquid nitrogen into an insulated open container, put in a copper block, immerse the lower part of the copper block in liquid nitrogen, and expose the upper part to the air; take a copper sheet and place a polydimethylsiloxane mold on the upper part, Pour the CA solution of half the volume of the mold and place it on the copper block in liquid nitrogen; after the solution solidifies, a parallel channel structure similar to wood is obtained.

[0113] Take 50 mL of CA solution (the preparation method is the same as above), add 1.5 mL of polypyrrole, and stir for 0.5 h; take 0.4 g of ammonium persulfate and add it to 10 mL of deionized water, add the obtained ammonium persulfate solution to the CA solution, and stir for another 3 h. Until there is no lumpy gel in...

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Abstract

The invention provides a preparation method of a wood-like black body material. An artificial asymmetric structure wood-like material with a directional nano structure is developed through an ice template method. The invention provides a wood-like black body material which comprises a double-layer structure of a polypyrrole-carboxymethyl cellulose-alginate composite material (CCAP) and a calcium cured carboxymethyl cellulose / sodium alginate composite material (CCA), the CCAP layer contains black polypyrrole, the solar energy absorption rate can be effectively improved, and the evaporation enthalpy of interface water is reduced; the CCA layer is of a hydrophilic polyhydroxy macroporous structure, has considerable water transmission capacity and salt resistance, and is an excellent heavy metal trapping agent. In addition, all precursors of the artificial asymmetric structure wood material provided by the invention are biomass, so that the influence on the water ecological environment is minimum in the regeneration process of drinking water without metal ions. The invention further provides application of the wood-imitating black body material.

Description

technical field [0001] The invention belongs to the technical field of photothermal conversion water evaporation, and in particular relates to a wood-like blackbody material and a preparation method and application thereof, in particular to the preparation of a high-efficiency photothermal conversion blackbody material, and the hydrophilic and hydrophobic interface treatment of the material. Background technique [0002] With population growth, urbanization and socio-economic development, more than 100 countries have experienced water scarcity to varying degrees. There are three main reasons for water shortage. One is that more than 97% of the water on the earth's surface is high-salinity seawater that cannot be directly used; the other is that with the rapid development of industry, 2.5% of surface freshwater is facing various pollution problems. , such as mine pollution, domestic sewage, etc.; the third is the imbalance in the distribution of water resources, which exacerb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F101/20C02F103/08
CPCC02F1/14C02F2103/08C02F2101/20Y02A20/124
Inventor 俞书宏赵浩雨
Owner UNIV OF SCI & TECH OF CHINA
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