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Porphyrin-based conjugated microporous polymer photothermal conversion sponge as well as preparation and application thereof

A conjugated microporous, photothermal conversion technology, applied in seawater treatment, general water supply conservation, chemical instruments and methods, etc. The effect of easy availability of materials and good application prospects

Active Publication Date: 2022-05-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a porphyrin-based conjugated microporous polymer light-to-heat conversion sponge and its preparation and application, filling the existing Porphyrin-based conjugated microporous polymers for desalination of seawater and their photothermal conversion sponges overcome the defects of poor processability of powdered polymers

Method used

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  • Porphyrin-based conjugated microporous polymer photothermal conversion sponge as well as preparation and application thereof
  • Porphyrin-based conjugated microporous polymer photothermal conversion sponge as well as preparation and application thereof
  • Porphyrin-based conjugated microporous polymer photothermal conversion sponge as well as preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation of porphyrin-based conjugated microporous polymers as light-to-heat conversion materials.

[0048] Its preparation method is: under normal temperature and pressure, put tetrabromophenylporphyrin (186mg, 0.2mmol) and p-phenylenediamine (64.8mg, 0.6mmol) into a 50mL reaction tube, add tert-butyl Sodium alkoxide (100mg, 1.04mmol), 2-dicyclohexylphosphonium-2,4,6-triisopropylbiphenyl (11.44mg, 0.024mmol), bis(dibenzylideneacetone) palladium (9.2mg, 0.016 mmol), then add 20mL anhydrous toluene under nitrogen atmosphere, react at 110°C for 48h, wash and suction filter the prepared polymer with chloroform, methanol and water, put into 100°C vacuum oven and dry for 48h to obtain porphyrin Phenyl-conjugated microporous polymer, denoted as PACMP-2.

[0049] The dosage of p-phenylenediamine in the above preparation method was modified to 21.6 mg (0.2 mmol), and the rest were the same as the above method to obtain a porphyrin-based conjugated microporous polymer, which...

Embodiment 2

[0055] Preparation of Porphyrin-Based Conjugated Microporous Polymer Modified Sponge for Seawater Desalination and Dye Wastewater Purification, Including Glucose-Chitosan Solution (Preparation Method References: Vogt, B.D.; Cavicchi, K.A.; Ye, C.; Seo, J., SOLIDSTATE CONVERSION OF BIO-BASED ORGANIC SALTS TO GENERATE POLYMER COATINGS.) and preparation of polymer modified sponges.

[0056] The preparation method is as follows: fully dissolve 7 g of D-glucose potassium salt in 100 mL of deionized water, add 30 mL of cation exchange resin, stir for 15 minutes until no particles, and obtain a mixed filtrate of glucose potassium salt and ion exchange resin. Mix the mixed filtrate with 9.1g chitosan, add deionized water and stir for 24h to form a uniform glucose-chitosan organic salt solution. The solution was purified by filtration, and the collected filtrate was rotary evaporated at a temperature of 40 °C to obtain a glucose-chitosan adhesive. Before use, 300 mL of methanol was ad...

Embodiment 3

[0060] The application of porphyrin-based conjugated microporous polymer modified sponge in seawater desalination, the specific method is:

[0061] Add 100mL of Yellow Sea seawater to a small beaker with a diameter of 4.5cm, place the polymer sponge in Example 2 on the surface of the seawater, weigh and record the total mass of the beaker, seawater and sponge; The thermal imager records real-time temperature and infrared images. After weighing the total mass of the beaker, seawater and sponge, the results are as follows: Figure 7 and Figure 8 as shown, Figure 7 It shows that the polymer-loaded sponge heats up significantly under light, and the surface temperature of the polymer sponge is significantly higher than that of the pure polyurethane sponge under the same conditions; Figure 8 The evaporation rate and light-to-heat conversion efficiency of polymer sponge and pure polyurethane sponge to seawater under light are shown, indicating that by loading a reasonable mass ...

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Abstract

The invention relates to porphyrin-based conjugated microporous polymer photo-thermal conversion sponge as well as preparation and application thereof. The porphyrin-based conjugated microporous polymer photothermal conversion sponge comprises a porphyrin-based conjugated microporous polymer, glucose-chitosan and a polyurethane sponge. The preparation method comprises the following steps: carrying out Buchwald-Hartwisting cross-coupling reaction on tetrabromophenyl porphyrin and p-phenylenediamine in the presence of alkali, a catalyst and a ligand, mixing the obtained porphyrin-based conjugated microporous polymer with a glucose-chitosan aqueous solution, soaking polyurethane sponge in the obtained mixed solution, and heating for cross-linking. The preparation method has the advantages that operation is simple, and materials are easy to obtain; the porphyrin-based conjugated microporous polymer photo-thermal conversion sponge has the advantages of high photo-thermal conversion efficiency, high evaporation rate, good stability and the like, and can be recycled for multiple times.

Description

technical field [0001] The invention belongs to the field of photothermal conversion materials and their preparation and application, in particular to a porphyrin-based conjugated microporous polymer photothermal conversion sponge and its preparation and application. Background technique [0002] Photothermal conversion technology uses clean and renewable sunlight to irradiate objects, making them absorb sunlight and convert light energy into heat through mechanisms such as plasmon resonance effect, conjugation effect, non-radiative relaxation, and molecular thermal vibration, thereby accelerating seawater evaporation. , to achieve seawater desalination. Conjugated microporous polymers are a class of conjugated organic porous materials that are connected by covalent bonds and have a stable three-dimensional network structure. Based on abundant monomers and a variety of synthesis methods, the molecular design of conjugated microporous polymers is flexible, and the surface pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08L75/04C08L79/02C08L5/08C08K5/053C08G73/02C02F1/14C02F1/04C02F103/08
CPCC08J9/42C02F1/14C02F1/043C08G73/0273C02F2103/08C08J2375/04C08J2479/02C08J2405/08C08K5/053Y02A20/212Y02A20/142Y02A20/124
Inventor 廖耀祖石玉孟楠
Owner DONGHUA UNIV
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