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A cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination and its preparation method

A photothermal conversion material and cellulose technology, applied in the field of solar seawater desalination, can solve the problems of high cost, poor biodegradability, uncontrollable structure, etc., and achieve the effects of low cost, improved absorption rate, and improved conversion efficiency.

Active Publication Date: 2022-04-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the technical problems existing in the prior art, the present invention provides a cellulose-sourced carbon-based photothermal conversion material for seawater desalination and a preparation method thereof to solve the problem of the high cost of solar photothermal conversion materials in the prior art , technical problems of poor biodegradability and uncontrollable structure, in order to achieve efficient utilization of solar energy and efficient evaporation of water

Method used

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  • A cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination and its preparation method
  • A cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination and its preparation method
  • A cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination and its preparation method

Examples

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preparation example Construction

[0023] The invention provides a method for preparing a cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination, comprising the following steps:

[0024] Step 1, mixing nanocellulose, cell regulator, epoxy resin, polyamide resin and water to prepare a mixed suspension; wherein, the contents of each component in the mixed suspension are: nanocellulose: 1~ 10wt%, epoxy resin: 2-10wt%, polyamide resin: 5-10wt%, cell regulator: 1-20wt% and the rest of water, the total content of the above components is 100wt%;

[0025] Step 2, place the mixed suspension in a high-speed overhead stirrer and stir until uniform, the stirring speed is 1000-2000r / min, and the stirring time is 10-30min;

[0026] Step 3. Pour the uniformly stirred mixed suspension into a custom-made container, and let it stand for degassing for 12-24 hours to obtain a homogeneous suspension. The size and shape of the custom-made container match the size and shape of the sample;

[0027]...

Embodiment 1

[0032] Example 1 provides a method for preparing a cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination, comprising the following steps:

[0033] Step 1, mixing nanocellulose, cell regulator, epoxy resin, polyamide resin and water to prepare a mixed suspension; wherein, the contents of each component in the mixed suspension are: nanocellulose: 2wt% 1. Epoxy resin: 5wt%, polyamide resin: 5wt%, cell regulator: 20wt% and water: the rest, the total content of the above components is 100wt%;

[0034] Step 2, place the mixed suspension in a high-speed overhead stirrer and stir until uniform, the stirring speed is 1500r / min, and the stirring time is 30min;

[0035] Step 3. Pour the uniformly stirred mixed suspension into a custom-made container, and let it stand for degassing for 24 hours to obtain a homogeneous suspension; the size and shape of the custom-made container match the size and shape of the sample;

[0036] Step 4. Place the homogene...

Embodiment 2

[0039] Example 2 provides a method for preparing a cellulose-sourced carbon-based light-to-heat conversion material for seawater desalination, including the following steps:

[0040] Step 1, mixing nanocellulose, cell regulator, epoxy resin, polyamide resin and water to prepare a mixed suspension; wherein, the contents of each component in the mixed suspension are: nanocellulose: 10wt% 1. Epoxy resin: 3wt%, polyamide resin: 5wt%, cell regulator: 10wt% and the rest of water, the total content of the above components is 100wt%;

[0041] Step 2, place the mixed suspension in a high-speed overhead stirrer and stir until uniform, the stirring speed is 1200r / min, and the stirring time is 20min;

[0042]Step 3. Pour the uniformly stirred mixed suspension into a custom-made container, and let it stand for degassing for 12 hours to obtain a homogeneous suspension; the size and shape of the custom-made container match the size and shape of the sample;

[0043] Step 4. Place the homogen...

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Abstract

The invention discloses a method for preparing a cellulose-sourced carbon-based light-to-heat conversion material for desalination of seawater. Firstly, nanocellulose, a cell regulator, epoxy resin, polyamide resin and water are mixed and stirred until uniform. Static degassing to obtain a homogeneous suspension, and directional freezing and drying to obtain a cellulose-based porous material; carbonization treatment to obtain the cellulose-sourced carbon-based photothermal conversion material for seawater desalination; the present invention adopts Nanocellulose is used as the base material, epoxy resin and polyamide resin are used as the adhesive, through freezing and drying, the ice crystals are sublimated to produce pores, so that it has a rich and porous network structure, which is conducive to the light in the cellulose source carbon-based light. Multiple scattering in heat conversion materials can effectively improve the absorption rate of solar energy, meet the needs of solar seawater desalination, improve the conversion efficiency of light and steam at the interface, and maximize the efficiency of seawater desalination; wide range of raw materials, low cost, and biodegradable properties .

Description

technical field [0001] The invention belongs to the technical field of solar seawater desalination, in particular to a cellulose-sourced carbon-based photothermal conversion material for seawater desalination and a preparation method thereof. Background technique [0002] With the rapid growth of the global population and the increasingly serious water pollution problem, the shortage of fresh water resources has become a global crisis. Solar energy is a clean and sustainable energy source, and using solar energy to desalinate seawater to obtain human-usable fresh water is a simple, feasible and effective method. In the prior art, solar photothermal conversion materials are mostly plasmonic materials, semiconductor materials, and carbon-based materials; among them, plasmonic materials and semiconductor materials have disadvantages such as high cost, poor biodegradability, and carrier layer polluting water bodies. Carbon-based materials are mostly derived from natural plants,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C04B38/00C01B32/05C02F1/14C02F103/08C04B111/40
CPCC04B38/00C01B32/05C02F1/14C02F2103/08C04B2111/40Y02A20/212Y02A20/124Y02A20/142Y02P20/133
Inventor 修慧娟杨雪李金宝崔雨馨冯盼马飞燕赵欣薛白亮岳小鹏
Owner SHAANXI UNIV OF SCI & TECH
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