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Eggshell membrane/silver nanoparticle/graphene oxide composite biological membrane and preparation method

A composite technology of silver nanoparticles and graphene, applied in lighting and heating equipment, absorbing elements, solar heating systems, etc., can solve the problems of not meeting the requirements of high light-to-heat conversion efficiency, and achieve enhanced light-to-heat conversion performance, Enhance the effect of photothermal effect

Active Publication Date: 2020-08-28
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (3) The light absorption of single-component light-to-heat conversion materials in the prior art cannot meet the requirements for high light-to-heat conversion efficiency

Method used

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  • Eggshell membrane/silver nanoparticle/graphene oxide composite biological membrane and preparation method
  • Eggshell membrane/silver nanoparticle/graphene oxide composite biological membrane and preparation method
  • Eggshell membrane/silver nanoparticle/graphene oxide composite biological membrane and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1: Composite assembly of triangular silver nanoparticles and graphene oxide on eggshell membranes to prepare functional biofilms with photothermal effects

[0075] Synthesis of A triangular silver nanoparticles:

[0076] Triangular silver nanoparticles were prepared by light-induced method. 98mL silver nitrate (AgNO 3 ) solution (0.1mM) and 1mL trisodium citrate (C 6 h 5 Na 3 o 7 ) solution (100mM) was mixed and placed in a beaker. After mixing well, slowly add 1ml sodium borohydride (NaBH 4 ) solution (8mM) to obtain a yellow silver seed solution, and then put it into a sodium lamp (NAV-T70) device to irradiate for 12h to obtain a blue triangular silver nanoparticle solution.

[0077] B silver nanoparticles and eggshell membrane composite:

[0078] The assembly of silver nanoparticles on eggshell membranes was achieved by the impregnation method. The eggshell membrane was immersed in the triangular silver nanoparticle solution obtained by light-induced ...

Embodiment 2

[0083] Example 2: Composite assembly of disk silver nanoparticles and graphene oxide on eggshell membranes to prepare functional biofilms with photothermal effects:

[0084] A. Synthesis of Disc Silver Nanoparticles:

[0085] Under stirring, 3.6mL of 100mM sodium citrate, 0.24g of polyvinylpyrrolidone (PVP) and 0.48mL of 30wt% H 2 o 2 Add to 200mL 0.1mM AgNO 3 in solution. After about 30 min, a red disc silver nanoparticle solution was obtained.

[0086] B silver nanoparticles and eggshell membrane composite:

[0087] The assembly of silver nanoparticles on eggshell membranes was achieved by the impregnation method. The cut eggshell membrane was taken out and immersed in the synthetic red disc silver nanoparticle solution with a bath ratio of 500. Shake at room temperature for 5 minutes to fully contact the eggshell membrane with the silver nanoparticles. Then the silver nanoparticle solution impregnated with the eggshell membrane was placed in a water bath at 40° C. fo...

Embodiment 3

[0091] Embodiment 3: The preparation of the functional biofilm of the photothermal effect of polydiallyldimethylammonium chloride (PDDA)-assisted triangular silver nanoparticles and graphene oxide composite assembly:

[0092] A PDDA modification on the surface of the eggshell membrane:

[0093] Eggshell membranes were soaked in a PDDA (2 wt %) solution at room temperature for 3 hours, then the eggshell membranes were taken out, washed with water, and dried to obtain PDDA-modified eggshell membranes.

[0094] Synthesis of B-disk silver nanoparticles:

[0095] First, blue triangular silver nanoparticles are synthesized. 100 mL of 0.1 mM AgNO 3 solution, 1.8mL 100mM sodium citrate solution, 0.12g PVP and 0.24mL 30wt% H 2 o 2 Mix under vigorous stirring. After that 0.60mL 100mM NaBH 4 The solution was quickly added to the above mixture. After about 30 min, blue triangular silver nanoparticles were obtained. Afterwards, 2.0 mL of 100 mM KCl solution was added to 100 mL of t...

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Abstract

The invention belongs to the technical field of photothermal conversion materials, and discloses an eggshell membrane / silver nanoparticle / graphene oxide composite biological membrane and a preparationmethod. A waste eggshell membrane is used as a carrier material, and silver nanoparticles with a photothermal conversion effect and graphene oxide are assembled together to prepare the biomass membrane with synergistically enhanced photothermal conversion performance. The preparation method comprises the following steps: preparing anisotropic silver nanoparticles with different LSPR properties bytaking silver nitrate as a precursor; loading the anisotropic silver nanoparticles onto the eggshell membrane by a self-assembly method; and loading graphene oxide nanosheets on the eggshell membranein an impregnation self-assembly manner. According to the technical scheme, the enhanced photothermal effect of the eggshell membrane loaded with the two functional nano materials is realized. The LSPR property of the silver nanoparticles can be effectively regulated and controlled through the morphology of the silver nanoparticles, and then the effective absorption and photothermal conversion ofthe eggshell membrane loaded with the silver nanoparticles on light energy of different wave bands are regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of photothermal conversion materials, and in particular relates to an eggshell membrane / silver nanoparticle / graphene oxide composite biofilm and a preparation method thereof. Background technique [0002] Currently, with the continuous depletion of non-renewable resources and the growing concern about environmental issues, meeting future energy demands in a sustainable manner is an urgent need. Solar energy is the main source of most renewable energy and has the greatest potential to support sustainable development and meet people's demand for renewable energy. Therefore, the realization of efficient utilization of solar energy has attracted extensive attention of scientific researchers. People have found that photothermal conversion is an important way to obtain solar energy, so it is very important to develop efficient photothermal conversion materials. Photothermal conversion refers to the process of co...

Claims

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Application Information

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IPC IPC(8): F24S70/10
CPCF24S70/10Y02E10/40
Inventor 唐彬王玲崔永明陈悟
Owner WUHAN TEXTILE UNIV
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