Flexible PPy/MXene-PDA photo-thermal fabric for solar evaporator and preparation method thereof

A technology of solar evaporators and fabrics, applied in the direction of steam generation methods, steam generation methods, chemical instruments and methods using solar energy, etc., can solve the problems of unstable photothermal performance, difficult transportation of photothermal materials, etc., and achieve good practicability and environmental applicability, excellent light-to-heat conversion performance, and easy transportation and maintenance

Active Publication Date: 2022-01-04
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a flexible PPy / MXene-PDA photothermal fabric for solar evaporators and its preparation method, which solves the problem that the photothermal materials prepared by the current photothermal material preparation methods are not easy to transport And the problem of unstable photothermal performance

Method used

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  • Flexible PPy/MXene-PDA photo-thermal fabric for solar evaporator and preparation method thereof
  • Flexible PPy/MXene-PDA photo-thermal fabric for solar evaporator and preparation method thereof
  • Flexible PPy/MXene-PDA photo-thermal fabric for solar evaporator and preparation method thereof

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preparation example Construction

[0032] The invention provides a method for preparing a flexible polypyrrole / MXene-dopamine (PPy / MXene-PDA) photothermal fabric for a solar evaporator, comprising the following steps:

[0033] Step 1: Put Ti 3 AlC 2Add the powder into the hydrofluoric acid solution and keep stirring at a constant temperature. After the stirring is completed, perform ultrasonic stripping and high-speed centrifugal cleaning several times until the pH value of the supernatant is 5.5-6.5. After the sediment is vacuum-dried, it is ground and sieved to obtain Ti 3 C 2 MXene powder.

[0034] Wherein, the concentration of hydrofluoric acid is 36%-40%, the stirring temperature is 30-40°C, the stirring time is 24-48h, and the vacuum drying temperature is 50-70°C.

[0035] Step 2: Cut the commodity polyester fiber fabric into required size (such as a circle with a diameter of 4cm), carry out ultrasonic cleaning (20-40min each time) for 2-4 times in absolute ethanol or acetone solution, and then Take o...

Embodiment 1

[0042] Step 1: Put Ti 3 AlC 2 Add the powder into the hydrofluoric acid solution and keep stirring at a constant temperature. After the stirring is completed, perform ultrasonic stripping and high-speed centrifugal cleaning several times until the pH value of the supernatant is 6. After the sediment is vacuum-dried, it is ground and sieved to obtain Ti 3 C 2 MXene powder.

[0043] Wherein, the concentration of hydrofluoric acid is 36%, the stirring temperature is 30°C, the stirring time is 24h, and the vacuum drying temperature is 50°C.

[0044] Step 2: Cut the commercial polyester fabric into the required size (for example, a circle with a diameter of 4cm), perform ultrasonic cleaning twice in absolute ethanol or acetone solution (20min each time), and then take it out and dry it. A clean polyester fiber fabric is obtained.

[0045] Step 3: adding the washed polyester fiber fabric to the weakly alkaline dopamine hydrochloride solution, stirring continuously at room temper...

Embodiment 2

[0051] Step 1: Put Ti 3 AlC 2 Add the powder into the hydrofluoric acid solution and keep stirring at a constant temperature. After the stirring is completed, perform ultrasonic stripping and high-speed centrifugal cleaning several times until the pH value of the supernatant is 5.5. After the sediment is vacuum-dried, it is ground and sieved to obtain Ti 3 C 2 MXene powder.

[0052] Wherein, the concentration of hydrofluoric acid is 40%, the stirring temperature is 40°C, the stirring time is 48h, and the vacuum drying temperature is 70°C.

[0053] Step 2: Cut the commercial polyester fiber fabric into the required size (for example, a circle with a diameter of 4cm), perform 4 times of ultrasonic cleaning in absolute ethanol or acetone solution (each 40min), and then take it out and dry it. A clean polyester fiber fabric is obtained.

[0054] Step 3: adding the washed polyester fiber fabric to the weakly alkaline dopamine hydrochloride solution, stirring continuously at roo...

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Abstract

The invention discloses a flexible PPy / MXene-PDA photo-thermal fabric for a solar evaporator and a preparation method thereof. The preparation method comprises the following steps of adding Ti3AlC2 powder into a hydrofluoric acid solution, continuously stirring at the constant temperature to obtain a mixed solution, carrying out ultrasonic stripping and high-speed centrifugal cleaning on the mixed solution till the PH value of supernate of the mixed solution is close to 6, carrying out vacuum drying on the sediment in the mixed solution, and then grinding and sieving to obtain Ti3C2MXene powder; adding a polyester fiber fabric into a weakly alkaline dopamine hydrochloride solution, continuously stirring, taking out and drying to obtain a polydopamine fabric; adding the Ti3C2MXene powder, pyrrole and isopropanol into deionized water, and continuously stirring to obtain PPy / MXene printing ink; and adding the polydopamine fabric into the PPy / MXene printing ink, and continuously stirring, so as to obtain the PPy / MXene-PDA photo-thermal fabric. The flexible PPy / MXene-PDA photo-thermal fabric for the solar evaporator provided by the invention has better practicability and environmental applicability, and is more convenient to transport.

Description

technical field [0001] The invention belongs to the technical field of photothermal material preparation, in particular to a flexible PPy / MXene-PDA photothermal fabric used in a solar evaporator and a preparation method thereof. Background technique [0002] With the pollution of the environment and the rapid growth of population, the problem of shortage of fresh water resources has become increasingly prominent. Numerous experiments and studies have shown that seawater desalination is the most feasible way to solve the global water shortage, and solar energy, as an inexhaustible environmental energy source, is considered to be the most suitable energy source for seawater desalination. At the same time, since converting solar energy into heat energy is the most efficient way of collecting solar energy, the use of solar absorbers for solar hot water evaporation is one of the simplest and most effective methods for seawater desalination. At present, the research on solar hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M11/74C02F1/14F22B1/00D06M101/32C02F103/08
CPCD06M15/37D06M11/74C02F1/14F22B1/006C02F2103/08Y02A20/212
Inventor 苏进步张鹏奎杨锐赵恒许珂圆穆雪阳严鑫悦马苗苗
Owner SHAANXI UNIV OF SCI & TECH
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