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A flexible composite material for seawater desalination and its preparation method

A composite material and flexible technology, which is applied in the field of flexible composite materials for seawater desalination and its preparation, can solve the problems of difficult and precise control of reaction conditions, cumbersome and complicated preparation, and restrictions on large-scale production, and achieve stable repeatability and simple preparation process , The effect that the reaction raw materials are cheap and easy to obtain

Active Publication Date: 2021-05-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of these light-absorbing materials is mostly cumbersome and complicated, and the reaction conditions are difficult to control precisely, which limits their large-scale production.

Method used

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  • A flexible composite material for seawater desalination and its preparation method
  • A flexible composite material for seawater desalination and its preparation method
  • A flexible composite material for seawater desalination and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Ultrasonically disperse 50mg of tungsten oxide nanowires newly prepared in 10mL of deionized water, and then put them into a block-shaped melamine sponge, and use its porous characteristics and strong water absorption to absorb the aqueous dispersion of tungsten oxide nanomaterials into its pores Inside, the melamine sponge absorbed with tungsten oxide nanomaterials was put into a muffle furnace, and carbonized at 500°C for 2 hours under nitrogen protection. A flexible composite material capable of self-floating in water and capable of desalinating seawater by using sunlight can be prepared.

Embodiment 2

[0023] Ultrasonically disperse 50mg of tungsten oxide nanowires newly prepared in 10mL of deionized water, and then put them into a block-shaped melamine sponge, and use its porous characteristics and strong water absorption to absorb the aqueous dispersion of tungsten oxide nanomaterials into its pores Inside, the melamine sponge absorbed with tungsten oxide nanomaterials was put into a muffle furnace, and carbonized at 400°C for 2 hours under nitrogen protection. A flexible composite material capable of self-floating in water and capable of desalinating seawater by using sunlight can be prepared. (If the temperature is lower, such as 300°C, the melamine sponge cannot be carbonized)

Embodiment 3

[0025] Ultrasonically disperse 50mg of tungsten oxide nanowires newly prepared in 10mL of deionized water, and then put them into a block-shaped melamine sponge, and use its porous characteristics and strong water absorption to absorb the aqueous dispersion of tungsten oxide nanomaterials into its pores Inside, the melamine sponge absorbed with tungsten oxide nanomaterials was put into a muffle furnace, and carbonized at 600°C for 2 hours under nitrogen protection. A flexible composite material capable of self-floating in water and capable of desalinating seawater by using sunlight can be prepared. (If the temperature is higher than 600°C, the composite material obtained by carbonization will not have good flexibility, which will greatly limit its wide application)

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Abstract

The invention relates to a flexible composite material for seawater desalination and a preparation method thereof, belonging to the technical field of inorganic material preparation technology. The flexible composite material used for seawater desalination is composed of carbonized melamine sponge as a support body, and the inside of the sponge is loaded with tungsten oxide nanomaterials. Ultrasonic disperse the tungsten oxide nanomaterials in deionized water, add a melamine sponge, use its porous structure and super water absorption performance, absorb the aqueous dispersion of tungsten oxide nanomaterials into its pores, and then absorb the tungsten oxide The nano-material melamine sponge is carbonized at high temperature under nitrogen protection to obtain a flexible composite material for seawater desalination. The method of the invention has simple preparation process, cheap and easy-to-obtain reaction raw materials, and skillfully utilizes the structure and performance of raw materials to prepare flexible composite materials with practical application. The prepared composite material can be used for seawater desalination, and has stable repeatability.

Description

technical field [0001] The invention belongs to the technical field of inorganic material preparation technology, and in particular relates to a flexible composite material used for seawater desalination and a preparation method thereof. Background technique [0002] Currently, the shortage of fresh water resources is one of the most pressing challenges in the world (Science, 2011, 333, 712-717). The two common means to solve the shortage of water resources are the use of reverse osmosis technology and solar desalination technology (Naturenanotechnology, 2015, 10, 459–464; Nature Photonics, 2016, 10, 393-398). Since solar energy is the most abundant energy available to human beings, compared with seawater desalination using reverse osmosis technology, using solar energy for seawater desalination has many advantages, such as no consumption of conventional energy, no pollution, and high purity of fresh water obtained. In recent years, strong light-absorbing materials such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08Y02A20/124Y02A20/142Y02A20/212
Inventor 焦世惠方振兴庞广生
Owner JILIN UNIV
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