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A self-floating portable black phosphorous-based light-to-heat vapor conversion material and its preparation method

A technology of converting materials and self-floating, applied in chemical instruments and methods, general water supply conservation, water/sewage treatment equipment, etc., can solve the problems of large volume, inconvenient to carry, inapplicable, etc., achieve high oil resistance and easy to carry , the effect of simple preparation method

Active Publication Date: 2022-01-14
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although porous foam is light in weight, its large volume makes it inconvenient to carry, and it is not suitable for special emergency situations

Method used

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  • A self-floating portable black phosphorous-based light-to-heat vapor conversion material and its preparation method
  • A self-floating portable black phosphorous-based light-to-heat vapor conversion material and its preparation method
  • A self-floating portable black phosphorous-based light-to-heat vapor conversion material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this embodiment, the specification of the black phosphorus sheet is 0.5um, the hydrophobic agent is 1H, 1H, 2H, 2H-perfluorooctyltrichlorosilane (reagent grade), and the crosslinking agent is hydroquinone (reagent grade) .

[0028] 1. Disperse 1.0g of black phosphorus in 200ml of acetone solution with an ultrasonic stirring process of 20kHz and 1000r / min at a temperature of 0°C to form a uniform black phosphorus dispersion;

[0029] 2. Add 0.5g of 1H,1H,2H,2H-perfluorooctyl trichlorosilicon and 0.5g of hydroquinone to the above-mentioned black phosphorus dispersion, stir at 0°C for 3 hours to fully cross-link, vacuum filter, Wash with acetone three times, and dry in a vacuum oven at 50°C for 12 hours.

[0030] figure 1 It is the FTIR and XPS spectrogram of the portable interfacial solar photothermal steam conversion material in Example 1 of the present invention. figure 1 a is the FTIR spectrum of pure black phosphorus and functionalized black phosphorus. It is fo...

Embodiment 2

[0035] In this embodiment, the specification of the black phosphorus sheet is 1.0um, the hydrophobic agent is 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane (reagent grade), and the crosslinking agent is hydroquinone (reagent grade) .

[0036] 1. Disperse 1.0g of black phosphorus in 300ml of acetone solution under the ultrasonic stirring process of 40kHz and 1000r / min at a temperature of 0°C to form a uniform black phosphorus dispersion;

[0037] 2. Add 0.5g of 1H,1H,2H,2H-perfluorodecyltrichlorosilane and 0.1g of hydroquinone to the above-mentioned black phosphorus dispersion, stir at 0°C for 2 hours to fully cross-link, vacuum filter, acetone Wash 4 times and dry in a vacuum oven at 50°C for 14 hours.

Embodiment 3

[0039] In this embodiment, the size of the black phosphorus sheet is 1.5um, the hydrophobic agent is dodecyltrichlorosilane (reagent grade), and the crosslinking agent is hydroquinone (reagent grade).

[0040] 1. Disperse 2.0g of black phosphorus in 400ml of acetone solution with an ultrasonic stirring process of 20kHz and 2000r / min at a temperature of 10°C to form a uniform black phosphorus dispersion;

[0041] 2. Add 0.2g dodecyltrichlorosilane and 0.2g hydroquinone to the above black phosphorus dispersion, stir at 10°C for 1.5h to fully cross-link, vacuum filter, wash with acetone for 3 times, and vacuum oven Dry at 80°C for 12h.

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Abstract

The invention discloses a self-floating portable black phosphorus-based light-to-heat steam conversion material and a preparation method thereof. The material uses black phosphorus as a light-to-heat conversion matrix, and makes it self-float on the water surface by improving hydrophobicity, thereby realizing interface light-to-heat steam Conversion; its preparation method: the black phosphorus powder is made into a uniform dispersion liquid by ultrasonic stirring process, then adding hydrophobic agent and crosslinking agent in turn, vacuum filtration, washing with acetone several times to remove impurities, and drying in a vacuum oven to obtain the functional material . The material is easy to manufacture, has a simple process, and is portable. The light-to-heat conversion is concentrated on the interface, which can make full use of solar energy and realize efficient seawater desalination. It can be directly applied to large-scale industrial production and market promotion.

Description

technical field [0001] The invention relates to an interface solar photothermal steam conversion functional material, in particular to a self-floating portable black phosphorus-based photothermal steam conversion material and a preparation method thereof. Background technique [0002] As the world's population increases and water resources dwindle, access to fresh water resources is gaining more and more attention from scientists. Seawater is the most important resource on the earth, and extracting freshwater from it is the focus of research institutions and companies in various countries. For now, seawater desalination technologies are mainly based on distillation and reverse osmosis. However, high energy consumption and high equipment requirements prevent these two processes from being applied in poor and remote areas. Interfacial solar photothermal steam conversion is an emerging seawater desalination technology, which uses photothermal materials to convert incident pho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08C02F2201/008Y02A20/142Y02A20/124Y02A20/212
Inventor 桂宙李兆欣蔡炜宋磊胡源
Owner UNIV OF SCI & TECH OF CHINA
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