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Method for preparing carbon cloth surface covering copper-bismuth nanoparticles for seawater desalting

A surface-covered, bismuth-nanotechnology, which is applied in the field of preparation of copper-bismuth nanoparticles covered on the surface of carbon cloth, can solve the problems of weak light-to-heat conversion ability and poor impact resistance, and achieve effective absorption, high-efficiency water evaporation, and realization of water evaporation Effect

Active Publication Date: 2020-01-14
ZHEJIANG OCEAN UNIV
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Problems solved by technology

[0005] The present invention aims to overcome the problems of poor impact resistance and weak light-to-heat transfer ability in the prior art, and provides a method for preparing carbon cloth surface-covered copper-bismuth nanoparticles for seawater desalination. Impact ability, good light absorption and light-to-heat conversion ability and strong material stability

Method used

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  • Method for preparing carbon cloth surface covering copper-bismuth nanoparticles for seawater desalting
  • Method for preparing carbon cloth surface covering copper-bismuth nanoparticles for seawater desalting
  • Method for preparing carbon cloth surface covering copper-bismuth nanoparticles for seawater desalting

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preparation example Construction

[0034] A preparation method for covering copper bismuth nanoparticles on the surface of carbon cloth for seawater desalination, comprising the following steps:

[0035] (1) Activate the carbon cloth: Ultrasonic the carbon cloth in deionized water at 50-80°C for 0.5-1h, then put the carbon cloth into dilute nitric acid solution, the arrangement direction of the carbon fibers in the carbon cloth is orthogonal distribution, so The thickness of the carbon cloth is 0.294-0.333mm, the volume concentration of the dilute nitric acid is 10%, and the standing time in the dilute nitric acid solution is 15-20min.

[0036] (2) prepare the mixed solution of bismuth salt and citric acid solution, the mass ratio of bismuth salt and citric acid solution is 1-1.5:0.8-1, the carbon cloth of above-mentioned activation is put into described mixed solution to react, is heated to 75- React at 85°C for 1.8-2h, then heat to 150-170°C for 8-10h, cool to room temperature, centrifuge, wash with ethanol, ...

Embodiment 1

[0039]

Embodiment 2

[0041]

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Abstract

The invention relates to the field of environment-friendly materials, aims to problems that in the prior art, the impact resistance is poor and the light to heat capability is poor, and discloses a method for preparing carbon cloth surface covering copper-bismuth nanoparticles for seawater desalting. The method comprises the following preparation steps: putting carbon cloth into deionized water and a dilute nitric acid solution in sequence, and performing activation; preparing a mixed solution that the mass ratio of bismuth salt to citric acid is (1-1.5):(0.8-1), putting the activated carbon cloth into the mixed solution, performing a reaction, further performing heating to 75-85 DEG C, performing a reaction for 1.8-2 hours, further performing heating to 150-170 DEG C, performing a reaction for 8-10 hours, performing cooling to the room temperature, performing cleaning, and performing vacuum drying; and putting the obtained bismuth-based carbon cloth into a 0.5-1mol / L copper salt solution, performing drying, and further performing calcining in the presence of argon. The invention provides a material with good light absorption, a photo-thermal conversion capability and pole strength, the diffuse reflectance of the surface of the material to light can be effectively reduced, and effective absorption of full-wave bands of sunshine can be achieved.

Description

technical field [0001] The invention relates to the field of environmental protection materials, in particular to a preparation method for covering copper-bismuth nanoparticles on the surface of carbon cloth used for seawater desalination. Background technique [0002] About three-quarters of the earth is covered by water, but most of it is seawater. Freshwater resources closely related to human life are extremely scarce. Desalination of seawater is one of the important ways to solve the problem of freshwater resources in the future. Traditional distillation And the reverse osmosis membrane process is the most widely researched and applied seawater desalination technology. Inspired by the natural water cycle process, the use of sunlight to drive water evaporation to obtain clean fresh water has attracted widespread attention. However, seawater evaporates under natural evaporation conditions, and the utilization rate of sunlight is low, so the actual evaporation is slow. The...

Claims

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Application Information

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IPC IPC(8): C02F1/14D06M11/83D06M101/40C02F103/08
CPCC02F1/14D06M11/83D06M2101/40D06M2200/25C02F2103/08Y02A20/142Y02A20/212Y02A20/124
Inventor 周英棠
Owner ZHEJIANG OCEAN UNIV
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