Preparation method and application of a self-suspending polymer airgel with high-efficiency photothermal conversion
A light-to-heat conversion and polymer technology, applied in airgel preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low mechanical strength of porous materials, complicated preparation process, low efficiency, etc., and achieve photothermal High conversion efficiency, uniform pore distribution, and wide light absorption range
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Embodiment 1
[0029] a. Uniformly disperse the Au nanoparticles coated with silicon dioxide in 750 μl of methanol to obtain a nanoparticle dispersion, wherein the nanoparticle is 37.5 mg;
[0030] b. Add 1g of ammonium bicarbonate to 10g of polydimethylsiloxane monomer, then add 1g of silica gel curing agent and 750 μl of the nanoparticle dispersion obtained in step a, and then mix and grind in a mortar for 10 minutes to obtain The liquid mixture was transferred to a beaker, and then heated in an oven at 120°C for 3 hours to obtain a porous polymer airgel coated with Au nanoparticles;
[0031] c. Add 10g of monomeric acrylic acid and 4g of initiator ammonium persulfate into 400mL of deionized water, ultrasonically dissolve, then immerse the porous polymer airgel obtained in b in this solution, react at 70°C for 2 hours, and then 60 After vacuum drying at ℃ for 6 hours, a hydrophilic self-suspending polymer airgel with high photothermal conversion and hydrophilic properties coated with Au na...
Embodiment 2
[0033] a. Silica-coated Cu 7 S 4 Nanoparticles are uniformly dispersed in 1500 μl of methanol to obtain a nanoparticle dispersion, wherein the nanoparticle is 75 mg;
[0034]b. Add 1.5 g of ammonium bicarbonate to 15 g of polydimethylsiloxane monomer, then add 1.5 g of silica gel curing agent and 1500 μl of the nanoparticle dispersion obtained in step a, and then mix and grind in a mortar for 15 minutes. The resulting liquid mixture was transferred to a beaker, and then heated in an oven at 150 °C for 2 hours to obtain a coated Cu 7 S 4 Nanoparticle-based porous polymer aerogels;
[0035] c. Add 15g of monomeric acrylic acid and 6g of initiator ammonium persulfate into 600mL of deionized water, ultrasonically dissolve, then immerse the porous polymer airgel obtained in b in this solution, react at 80°C for 2 hours, and then 70 °C for 4 hours under vacuum to obtain coated Cu 7 S 4 Nanoparticle-based hydrophilic self-suspending polymer aerogels for efficient photothermal c...
Embodiment 3
[0037] a. Silica-coated Cu 7 S 4 @MoS 2 @Au nanoparticles are uniformly dispersed in 1000μl of methanol to obtain a nanoparticle dispersion, wherein the nanoparticle is 50mg;
[0038] b. Add 1g of ammonium bicarbonate to 10g of polydimethylsiloxane monomer, then add 1g of silica gel curing agent and 1000μl of the nanoparticle dispersion obtained in step a, and then mix and grind in a mortar for 10 minutes to obtain The liquid mixture was transferred to a beaker, and then heated in an oven at 135 ° C for 2 hours to obtain a coated Cu 7 S 4 @MoS 2 Porous polymer airgel of @Au nanoparticles;
[0039] c. Add 12.5g of monomeric acrylic acid and 5g of initiator ammonium persulfate into 500mL of deionized water, ultrasonically dissolve, then immerse the porous polymer airgel obtained in b in this solution, react at 70°C for 2 hours, and then Vacuum dried at 60°C for 6 hours to obtain coated Cu 7 S 4 @MoS 2 Hydrophilic self-suspending polymer airgel for efficient photothermal...
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