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Photothermal conversion film with heterostructure light trapping enhancement and preparation method of photothermal conversion film

A heterogeneous structure, light-to-heat conversion technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, lighting and heating equipment, etc., can solve the problem of low evaporation rate of solar interface seawater evaporators, inability to meet small-scale portable needs, Problems such as light capture efficiency and light utilization rate are low, to achieve the effect of improving light absorption efficiency, easy mass production, and simple method

Active Publication Date: 2021-11-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems in solar thermal energy conversion: 1) due to low efficiency in application, it is difficult to store; 2) the cost of optical equipment required is high and has not been fully utilized; 3) traditional photothermal generators are huge and complex systems, which cannot meet Scale Portability Requirements
However, these light-to-heat conversion films disclosed in the prior art all have the problems of low light capture efficiency and light utilization rate, which in turn leads to a low evaporation rate of the solar interface seawater evaporator made therefrom.

Method used

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  • Photothermal conversion film with heterostructure light trapping enhancement and preparation method of photothermal conversion film
  • Photothermal conversion film with heterostructure light trapping enhancement and preparation method of photothermal conversion film
  • Photothermal conversion film with heterostructure light trapping enhancement and preparation method of photothermal conversion film

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Embodiment 1

[0060] A method of preparing a photothermal conversion film having a heterogeneous structure traps, the specific steps are as follows:

[0061] (1) Preparation of CNT-BC hydrogel;

[0062] (1.1) formulated CNT water dispersion and HS nutrient solution, respectively;

[0063] The CNT water dispersion is obtained by adding CNT powder to ultrasonic dispersion evenly, the concentration of CNT water dispersion is 5 mg / ml;

[0064] HS nutrient solution from 40g / L glucose, 3g / L yeast extract, 3g / L protein, 1g / L NA 2 HPO 4 0.5g / lkh 2 PO 4 , 0.5 g / l of citric acid and margin ultrapure water composition; HS nutrient solution is: proportion of glucose, yeast extract, protein, NA 2 HPO 4 KH 2 PO 4 After stirring with citric acid, it was mixed with ultrapure water, and the high-pressure sterilizer was sterilized for 30 min with a high-pressure sterilizer at a temperature of 110 ° C and a pressure of 0.3 MPa, and a sterile cooled to 28 ° C to obtain an HS nutrient solution;

[006...

Embodiment 2

[0086] A method of preparing a photothermal conversion film having a heterogeneous structure traps, the specific steps are as follows:

[0087] (1) Preparation of CNT-BC hydrogel;

[0088] (1.1) formulated CNT water dispersion and HS nutrient solution, respectively;

[0089] The CNT aqueous dispersion is obtained by adding CNT powder to ultrasonic dispersion, and the concentration of CNT water dispersion is 5.5 mg / ml;

[0090] HS nutrient solution by 50 g / l glucose, 5g / L yeast extract, 5g / L protein, 2g / l NA 2 HPO 4 1g / lkh 2 PO 4 The ultrapure water of 1 g / L citric acid and margin; the formulation process of HS nutrient solution is: proportion of glucose, yeast extract, protein, NA 2 HPO 4 KH 2 PO 4 After adding ultrapure water, the mixture was mixed with citric acid, and the high-pressure sterilizer was sterilized with a high-pressure sterilizer at a temperature of 115 ° C and a pressure of 0.25 MPa, and a sterile cooled to 26 ° C to obtain an HS nutrient solution;

...

Embodiment 3

[0105] A method of preparing a photothermal conversion film having a heterogeneous structure traps, the specific steps are as follows:

[0106] (1) Preparation of CNT-BC hydrogel;

[0107] (1.1) formulated CNT water dispersion and HS nutrient solution, respectively;

[0108] CNT aqueous dispersion is obtained by CNT powder was added to deionized water to obtain a homogeneous ultrasonic dispersion, the concentration of CNT aqueous dispersion of 6mg / mL;

[0109] HS nutrient solution of 60g / L glucose, 8g / L yeast extract, 8g / L peptone, 4g / L Na 2 HPO 4 , 2g / LKH 2 PO 4 , Ultra-pure water 2g / L citric acid and the balance; HS nutrient solution preparation process is as follows: the proportion of glucose, yeast extract, peptone, Na 2 HPO 4 KH 2 PO 4 After the addition of citric acid and ultrapure water Stir it is at a temperature of 120 deg.] C and a pressure of 0.2MPa by autoclave sterilization temperature 40min, cooled to a sterile 24 ℃, to obtain HS nutrient solution;

[0...

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Abstract

The invention relates to a photothermal conversion film with heterostructure light trapping enhancement and a preparation method thereof. The preparation method comprises the steps that firstly, a nutrient solution containing CNT and acetobacter xylinum original bacteria solution are added into a culture dish for static culture, and CNT-BC hydrogel is obtained; and then a nutrient solution containing GO and an acetobacter xylinum original bacterial solution is added into a culture dish of which the bottom is filled with the CNT-BC hydrogel, static culture is conducted, GO-BC hydrogel is formed above the CNT-BC hydrogel to obtain CNT-GO-BC hydrogel, and finally, GO in the CNT-GO-BC hydrogel is reduced to obtain the photothermal conversion film with enhanced light trapping of the heterostructure. The finally prepared photothermal conversion film is CNT-rGO-BC hydrogel with a composite layer structure and is composed of the CNT-BC hydrogel on the upper layer and the rGO-BC hydrogel on the lower layer, and the CNT-BC hydrogel on the upper layer and the rGO-BC hydrogel on the lower layer are connected through BC nanofibers. The photothermal conversion film is high in near-infrared light absorption and good in photo-thermal performance, and can effectively convert light energy of sunlight into heat energy.

Description

Technical field [0001] The present invention belongs to the technical field of photothermal conversion material, and it is directed to a photothermal conversion film having a heterogeneous structure traps and a preparation method thereof. Background technique [0002] Chemical energy such as coal, oil and natural gas is not conducive to sustainable development, and it is also the main reason for environmental pollution. The total amount of traditional energy consumption accounts for more than 80% of the total consumption of global consumption, and it is urgent to use clean energy to replace fossil energy, alleviate environmental pollution and climate change. In all renewable energy sources, solar energy has the incompetence, stable output, etc. [0003] my country has a very rich solar resources, rich areas such as Tibet, the total amount of solar radiation in Qinghai is 8400MJ / AM 2 , Lack of region such as Sichuan, Guizhou radiation can also reach 3400MJ / AM 2 . So far, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08K3/04C08J5/18F24S70/10C12P19/04C12P3/00C12R1/01
CPCC08J5/18C12P19/04C12P3/00F24S70/10C08J2301/02C08K3/042C08K3/041C08K2201/011C08K2201/005C08K2201/004C08K2201/016Y02E10/40
Inventor 金梦甜王华平蔡一啸陈烨张冬陈仕艳
Owner DONGHUA UNIV
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