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Polypyrrole-based photo-thermal conversion film and preparation method and application thereof

A polypyrrole-based light, photothermal conversion technology, applied in textiles and papermaking, coatings, paper coatings, etc., can solve the problem of polypyrrole difficulty and other problems, and achieve energy loss reduction, strong universality, and strong light absorption ability. Effect

Inactive Publication Date: 2020-02-04
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When applying electrochemical polymerization, the substrate must be selected from inert metals such as platinum, gold, stainless steel, nickel, or conductive materials such as conductive glass, graphite, and glassy carbon electrodes, so there are great limitations in the selection of substrates
However, the traditional chemical oxidation method is usually carried out in a solution, and the polypyrrole obtained by this method is difficult to deposit on the substrate and remain stable without falling off.

Method used

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  • Polypyrrole-based photo-thermal conversion film and preparation method and application thereof
  • Polypyrrole-based photo-thermal conversion film and preparation method and application thereof
  • Polypyrrole-based photo-thermal conversion film and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] (1) Preparation of air-laid paper (AP) film coated with ferric chloride: Soak the air-laid paper with a diameter of 30mm in 0.1mol / L ferric chloride aqueous solution at room temperature for 6h , taken out and dried in an oven at 60°C to obtain a dust-free paper film coated with ferric chloride.

[0047](2) Preparation of polypyrrole (Polypyrrole, be called for short PPy) coated dust-free paper film: measure the pyrrole monomer of 10 μ l, drop in the open glass bottle, mix it with the ferric chloride that step (1) obtains The coated dust-free paper film was put into a closed polypropylene plastic bottle, and then the plastic bottle was moved into an oven at 80°C for polymerization reaction, and it was taken out after 0.5h to obtain a polypyrrole-coated dust-free paper film.

[0048] (3) Preparation of polypyrrole-based dust-free paper film: the polypyrrole-coated dust-free paper film obtained in step (2) was washed with ethanol several times, and dried in an oven at 60°C...

Embodiment 2

[0063] The difference from Example 1 is that according to the preparation method of Example 1, the polymerization reaction temperature in step 2) in the preparation of the polypyrrole (PPy)-coated dust-free paper film was adjusted to room temperature (25° C.).

[0064] Figure 9 It is the color change of the sample over a period of time during the preparation of PPy-AP by the CVD method at room temperature (25°C); Figure 9 It can be seen that the dust-free paper film coated with ferric chloride turns from yellow to black within a few minutes, indicating that the growth process of polypyrrole can be completed in a short time, and can be grown at a relatively low temperature. conduct. It can be seen that the method of the present invention is simple and efficient.

Embodiment 3

[0066] The difference from Example 1 is: according to the preparation method of Example 1, the size of the air-laid paper in the preparation of the air-laid paper (Air-laid paper, referred to as AP) film coated with ferric chloride in step 1) is adjusted It is 16cm long and 14cm wide.

[0067] Depend on Figure 10 It can be seen that by using the CVDP method, only 10 μl of pyrrole monomer is used to obtain a surface area of ​​more than 200 cm without using any other valuable medicines or articles. 2 light-to-heat conversion film. It can be seen that the method of the present invention has the characteristics of low price and easy large-scale preparation.

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Abstract

The invention belongs to the field of composite materials, and particularly relates to a polypyrrole-based photo-thermal conversion film and a preparation method and application thereof. The preparation method comprises the steps that a chemical vapor deposition polymerization method is adopted, a basement membrane is soaked in an oxidant solution, dried and then subjected to airtight polymerization with a pyrrole monomer, and thus the photo-thermal conversion film is obtained. The chemical vapor deposition polymerization method is adopted, the preparation method has the characteristics of being simple, economic and efficient, limitation brought by a conventional electrochemical method and a liquid-phase chemistry method can be avoided, and polypyrrole can grow in situ on the surfaces of various substrate materials. The prepared film material can serve as a light absorbing body to efficiently absorb solar energy, solar energy is converted to thermal energy which is used for liquid evaporation, and good performance stability is still maintained after multiple times of cycles.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a polypyrrole-based light-to-heat conversion film and its preparation method and application. Background technique [0002] With the economic development and population growth, the scarcity of water resources has become a key problem that needs to be solved urgently. The production of fresh water through the evaporation of light and hot water is considered to be one of the most ideal ways to solve the problem of water shortage. However, due to the low light absorption rate of water itself and the serious loss of heat generated by the water surface to the water body, the evaporation rate of water under natural conditions is very low, and it is difficult to carry out large-scale application in real life. Therefore, it is necessary to use some photothermal materials with high light absorption rate to capture more sunlight and convert it into heat to accelerate water e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/16D21H19/24C08J7/16D06M15/37D06M101/06C08L27/16
CPCD21H19/16D21H19/24C08J7/16D06M15/37C08J2327/16C08J2379/04C08J2381/06D06M2101/06
Inventor 江河清王灿柱王玉超
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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