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Cellulose source carbon-based photothermal conversion material for sea water desalination and preparation method thereof

A light-to-heat conversion material and cellulose technology, applied in the field of solar desalination, can solve the problems of high cost, poor biodegradability, and uncontrollable structure, and achieve the effects of low cost, increased absorption rate, and improved conversion efficiency

Active Publication Date: 2020-06-16
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Cellulose source carbon-based photothermal conversion material for sea water desalination and preparation method thereof
  • Cellulose source carbon-based photothermal conversion material for sea water desalination and preparation method thereof
  • Cellulose source carbon-based photothermal conversion material for sea water desalination and preparation method thereof

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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 preparation method of a cellulose source carbon-based photothermal conversion material for sea water desalination, which comprises the following steps: mixing nanocellulose,a cell regulator, epoxy resin, polyamide resin and water, stirring to a uniform state, standing for degassing to obtain a homogeneous suspension, and carrying out directional freezing and drying to obtain a cellulose-based porous material; and performing carbonization treatment to obtain the cellulose source carbon-based photothermal conversion material for sea water desalination. According to theinvention, nanocellulose is used as a base material, epoxy resin and polyamide resin are used as adhesives, pores are generated after sublimation of ice crystals through freezing and drying, so thatthe cellulose source carbon-based photothermal conversion material has a rich porous network structure, multiple scattering of light rays in the cellulose source carbon-based photothermal conversion material is facilitated, the solar absorptivity is effectively improved, the solar seawater desalination requirement is met, the interface light-steam conversion efficiency is improved, and the seawater desalination efficiency is maximized. The raw materials are wide, the cost is low, and the biodegradability is realized.

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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IPC IPC(8): C04B38/00C01B32/05C02F1/14C02F103/08C04B111/40
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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