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Carbon-based absorbing material, and preparation method and application thereof

An absorbing material and carbon-based technology, applied in the field of interface solar seawater desalination, can solve problems such as high requirements and complicated preparation process, and achieve the effects of improving utilization efficiency, accelerating evaporation efficiency, and improving light-to-heat conversion efficiency

Inactive Publication Date: 2019-10-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation process of graphene, nanoparticles and other light-absorbing materials used in the above scheme is complicated and demanding. Carbon foam and carbon powder are used as light-absorbing materials. To achieve a high light-to-heat conversion efficiency, it must Can only be achieved under artificial light

Method used

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  • Carbon-based absorbing material, and preparation method and application thereof
  • Carbon-based absorbing material, and preparation method and application thereof
  • Carbon-based absorbing material, and preparation method and application thereof

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preparation example Construction

[0027] A method for preparing a carbon-based absorbent material provided by the invention comprises the following steps:

[0028] Step 1, weighing biomass carbon powder, ethyl cellulose and stearic acid according to the mass ratio of 1:(1~2):(1~2);

[0029] Step 2, dissolving the biomass carbon powder, ethyl cellulose and stearic acid weighed in step 1 in an ethanol solvent to obtain a configured solution;

[0030] Step 3, heating and stirring the solution configured in step 2 to obtain a stirred solution, the mass concentration of which is 8-16 g / L;

[0031] In step 4, the sponge is placed in the stirred solution obtained in step 3 by dip-dipping method to prepare a carbon-based absorbent material, and the carbon-based absorbent material is surface soaked, half soaked or completely soaked.

[0032] Wherein, in step 3, the technical conditions for heating and stirring the solution prepared in step 2 are: stirring at 250-350 r / min for 10-20 hours with a magnetic stirrer at a t...

Embodiment 1

[0038] A method for preparing a carbon-based absorbent material, comprising the steps of:

[0039] Step 1, weigh 0.4g of biomass carbon powder, 0.4g of ethyl cellulose and 0.4g of stearic acid;

[0040] Step 2, dissolving the biomass carbon powder, ethyl cellulose and stearic acid weighed in step 1 in 50ml of ethanol solvent to obtain a configured solution;

[0041] Step 3, stirring the solution prepared in step 2 at a temperature of 30° C. with a magnetic stirrer at 250 r / min for 10 h to obtain a stirred solution, the mass concentration of which is 10 g / L;

[0042] In step 4, the sponge is placed in the stirred solution obtained in step 3 by dip-dipping method to prepare a carbon-based absorbent material, and the carbon-based absorbent material is surface-immersed.

Embodiment 2

[0044] Step 1, weigh 0.2g biomass carbon powder, 0.4g ethylcellulose and 0.2g stearic acid;

[0045] Step 2, dissolving the biomass carbon powder, ethyl cellulose and stearic acid weighed in step 1 in 50ml of ethanol solvent to obtain a configured solution;

[0046] Step 3, stirring the solution prepared in step 2 at a temperature of 40° C. with a magnetic stirrer at 300 r / min for 13 hours to obtain a stirred solution with a mass concentration of 8 g / L;

[0047] In step 4, the sponge is placed in the stirred solution obtained in step 3 by dipping-dipping method to prepare a carbon-based absorbent material, and the carbon-based absorbent material is half soaked.

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Abstract

The invention provides a carbon-based absorbing material, and a preparation method and an application thereof. The preparation method comprises the following steps: 1, weighing biomass carbon powder,ethyl cellulose and stearic acid according to a mass ratio of 1:(1-2):(1-2), wherein the biomass carbon powder is prepared through a preparation technology of the biomass carbon powder according to claim 1; 2, dissolving the biomass carbon powder and ethyl cellulose and stearic acid weighed in step 1 in an ethanol solvent to obtain a prepared solution; 3, heating and stirring the solution preparedin step 2 to obtain a stirred solution with a mass concentration of 8-16 g / L; and 4, placing a sponge in the stirred solution obtained in step 3 by using a dipping process to prepare the carbon-basedabsorbing material. The carbon-based absorbing material of the present invention can effectively absorb sunlight and improve the utilization efficiency of light.

Description

technical field [0001] The invention relates to the field of interface solar seawater desalination, in particular to a high-efficiency, cheap and adjustable solar-driven interface seawater desalination device and a preparation method thereof. Background technique [0002] At present, the light absorber materials used in seawater desalination include nanomaterials, carbon-based materials, graphite, metal plasmons, and graphene oxide, etc. Professor Chen Yongsheng of Nankai University directly prepared graphene-based graphene materials (3DG) A stand-alone solar thermal converter, under normal (1 sun) or even weaker sunlight (as low as 0.25 suns), the 3DG material can be directly used as a high-efficiency clean water generator in a simple and scalable manner. Yao et al. proposed a new method to improve solar evaporation efficiency by using light-absorbing materials floating on the liquid surface. They used floating magnetic Fe 3 o 4 / C composite nanoparticles can increase the...

Claims

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Application Information

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IPC IPC(8): C08J9/40C08J9/42C02F1/14C08L61/28C02F103/08
CPCC02F1/14C02F2103/08C08J9/40C08J9/42C08J2361/28C08J2401/28Y02A20/124Y02A20/142Y02A20/212
Inventor 王成兵杨欣玉李政通王伟苏进步凌三王九龙许珂圆
Owner SHAANXI UNIV OF SCI & TECH
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