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Preparation method and application of self-floating high-efficiency photothermal conversion seawater desalination material

A light-to-heat conversion, self-floating technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, seawater treatment, etc., to prevent large losses of thermal energy, enhance absorption, and generate high efficiency

Active Publication Date: 2019-04-19
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in existing photothermal materials and obtain a low-cost, wide-spectrum response and high-efficiency photothermal material that can realize self-floating. The present invention provides a self-floating high-efficiency photothermal conversion seawater Preparation method and application of desalination material

Method used

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  • Preparation method and application of self-floating high-efficiency photothermal conversion seawater desalination material
  • Preparation method and application of self-floating high-efficiency photothermal conversion seawater desalination material
  • Preparation method and application of self-floating high-efficiency photothermal conversion seawater desalination material

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Example 1: Using a hydrothermal synthesis method, nickel black, a self-floating high-efficiency light-to-heat conversion seawater desalination material, is grown on a clean nickel foam base material.

[0035] 1) Ultrasonic clean the purchased nickel foam with 3M dilute hydrochloric acid, ethanol, and deionized water for 30 minutes, 15 minutes, and 15 minutes respectively, and then place it in a constant temperature drying oven at 60°C for 12 hours.

[0036] 2) Add nickel nitrate hexahydrate and hexamethylenetetramine into a beaker with 40ml of deionized water, the ratio is 1:2, place on a stirring table and stir evenly to form a uniform and transparent solution, transfer the solution to a 100ml In the reactor, cut the nickel foam obtained in step 1) into 2*2cm 2 The size, together into the reactor, hydrothermal synthesis 100 ℃, 10h.

[0037] 3) The material obtained in (2) was repeatedly washed with deionized water, and dried at 60° C. to obtain an intermediate product...

Embodiment 2

[0044] Example 2: Using a hydrothermal synthesis method, an iron / defect-rich iron oxide composite is grown on a clean nickel foam base material.

[0045] 1) Ultrasonic clean the purchased nickel foam with 3M dilute hydrochloric acid, ethanol, and deionized water for 30 minutes, 15 minutes, and 15 minutes respectively, and then place it in a constant temperature drying oven at 60°C for 12 hours.

[0046] 2) Add ferric chloride hexahydrate and hexamethylenetetramine into a beaker with 40ml of deionized water, the ratio is 1:2, place on a stirring table and stir evenly to form a uniform and transparent solution, transfer the solution to 100ml In the reaction kettle, cut the nickel foam obtained in step 1) into 2*2cm 2 The size, together into the reactor, hydrothermal synthesis 100 ℃, 10h.

[0047] 3) The material obtained in (2) was repeatedly washed with deionized water, and dried at 60° C. to obtain an intermediate product—a foamed nickel-based material with ferric hydroxide. ...

Embodiment 3

[0052] Example 3: Using the method of hydrothermal synthesis, a self-floating high-efficiency photothermal conversion seawater desalination material copper / defective copper oxide composite is grown on a clean nickel foam base material.

[0053] 1) Ultrasonic clean the purchased nickel foam with 3M dilute hydrochloric acid, ethanol, and deionized water for 30 minutes, 15 minutes, and 15 minutes respectively, and then place it in a constant temperature drying oven at 60°C for 12 hours.

[0054] 2) Add copper chloride dihydrate and hexamethylenetetramine into a beaker with 40ml of deionized water, the ratio is 1:2, place on a stirring table and stir evenly to form a uniform and transparent solution, transfer the solution to 100ml In the reaction kettle, cut the nickel foam obtained in step 1) into 2*2cm 2 The size, together into the reactor, hydrothermal synthesis 100 ℃, 10h.

[0055] 3) The material obtained in (2) was repeatedly washed with deionized water, and dried at 60° C....

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Abstract

The invention discloses a preparation method and application of self-floating high-efficiency photothermal conversion seawater desalination material, and belongs to seawater desalination materials. Ablack body absorption material with a high-efficiency photothermal conversion function and a composite nano structure grows in a three-dimensional network structure by using a chemical method, such asnickel black, eriochrome black, transition metal iron / defective iron oxide, copper / defective copper oxide compound and cobalt / defective cobalt oxide compound. Base foamed nickel in the high-efficiency photothermal conversion seawater desalination material has a hydrophobic property and good mechanical strength, and the capillary action of mutually connected pore structures of the base foamed nickel is used for continuously transporting moisture and reducing the evaporation potential barrier; the photothermal material has a wide spectral absorption function, and has self-floating performance and low thermal conductivity simultaneously, so that the generation of local high temperature is facilitated, the evaporation of water is promoted, a large loss of thermal energy is prevented, and the generation efficiency of water vapor is high.

Description

technical field [0001] The invention relates to the fields of photothermal conversion and solar seawater desalination, in particular to a preparation method and application of a self-floating high-efficiency photothermal conversion seawater desalination material. Background technique [0002] The earth is rich in water resources, with seawater covering 71%, but it cannot be directly used for domestic and drinking water. Fresh water resources on the earth only account for 2.5% of the total water resources, of which less than 0.36% are available for human disposal. Especially since the beginning of the 20th century, the world's population has increased dramatically, environmental pollution and ecological damage have been serious, and unrestrained human exploitation and poor management have exacerbated the contradiction between supply and demand of water resources. Solar energy is a sustainable and clean energy that converts solar energy into sustainable Energy for direct appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00C23C18/12C23C22/05B82Y30/00B82Y40/00C02F1/30C02F1/04C02F103/08
CPCB82Y30/00B82Y40/00C02F1/043C02F1/30C02F2103/08C09K3/00C23C18/1216C23C18/1241C23C18/1295C23C22/05Y02A20/124
Inventor 孙再成吴丹丹
Owner BEIJING UNIV OF TECH
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