CN-121991642-A - Solar photo-thermal conversion material, preparation method and application

Abstract

The invention belongs to the technical field of photo-thermal conversion materials, and particularly relates to a solar photo-thermal conversion material, a preparation method and application thereof, wherein the material comprises 2-5 parts of biomass, 2-10 parts of copper chloride, 5-10 parts of nano ceramic particles, 5-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of hydroxypropyl methylcellulose and 5-20 parts of felt cloth. Compared with the prior art, the solar photo-thermal conversion material, the preparation method and the application thereof can effectively inhibit light reflection and improve absorbance, and in addition, the kaolin nano ceramic particles are used for enhancing biomass, so that the photo-thermal conversion efficiency can still be kept at a higher level under the condition of increasing the solar illumination intensity.

Inventors

• WANG LEI
• WANG XIAOSHU
• LI SHAOFENG
• WANG YANGYANG
• LIU JIN
• WANG JINSHENG

Assignees

• 深圳职业技术大学

Dates

Publication Date

20260508

Application Date

20251105

Priority Date

20241105

Claims (9)

1. 1. The solar photo-thermal conversion material is characterized by comprising, by weight, 2-5 parts of biomass, 2-10 parts of copper chloride, 5-10 parts of nano ceramic particles, 5-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of hydroxypropyl methylcellulose and 5-20 parts of felt cloth.
2. 2. The solar photothermal conversion material of claim 1, wherein the biomass is iris siberia biomass.
3. 3. The preparation method of the solar photo-thermal conversion material is characterized by comprising the following steps of: S100, planting Siberian iris plant in copper chloride solution, culturing for two months, and harvesting; s200, cleaning, drying and crushing the dried biomass in a 1mmol/L hydrochloric acid solution; s300, mixing the copper-containing dry biomass with kaolin nano ceramic particles, and then performing ball milling to obtain a copper-containing dry biomass reinforcing phase, wherein the mixing ratio is 3:1-1:1; S400, calcining a copper-containing dry biomass reinforcing phase to obtain copper-loaded biochar; s500, mixing the biochar loaded with copper with aminopropyl triethoxysilane and hydroxypropyl methylcellulose to form slurry, and adhering the slurry to felt cloth.
4. 4. A method for preparing a solar photothermal conversion material according to claim 3, wherein in said step S100: the concentration of the copper chloride solution is 300mg/L.
5. 5. The method for preparing a solar photo-thermal converting material as claimed in claim 4, characterized in that, in said step S400: The copper-containing dry biomass-enhancing phase is calcined under N 2 conditions.
6. 6. The method for preparing a solar photo-thermal converting material as claimed in claim 5, characterized in that, in said step S400: The calcination time was 2 hours and the calcination temperature was 900 ℃.
7. 7. The method for preparing a solar photo-thermal converting material as claimed in claim 5, characterized in that, in said step S500: The slurry is adhered to one side of the felt cloth, and the other side is not treated.
8. 8. Use of a solar thermal conversion material according to any one of claims 1-2 or a method for the preparation of a solar thermal conversion material according to claims 3-7 in a seawater evaporator.
9. 9. Use of a solar thermal conversion material according to any one of claims 1-2 or a method for the preparation of a solar thermal conversion material according to claims 3-7 for desalination of sea water and purification of contaminants.

Description

Solar photo-thermal conversion material, preparation method and application Technical Field The invention belongs to the technical field of photo-thermal conversion materials, and particularly relates to a solar photo-thermal conversion material, a preparation method and application thereof. Background Recent studies have shown that the water evaporation performance of interfacial solar evaporators is mainly determined by sunlight absorption, water transport and energy flow. In addition, in the actual solar seawater desalination process, salt crystals are inevitably formed on the surface of the evaporator due to the delay of salt transfer, which reduces the absorptivity of sunlight and blocks the water delivery channel, resulting in reduced evaporation rate and even damage to the evaporator. Therefore, there is an urgent need to develop a solar evaporator having high water evaporation performance and superior salt resistance. A prerequisite for the design of high performance solar evaporators is a photothermal material with broadband solar light absorbing capacity. To date, metal nanoparticles, polymers, semiconductors, and carbon materials are the most commonly used solar-thermal conversion materials. Among them, carbon materials show a competitive advantage in sea water desalination due to their inherent high solar absorptivity, low cost, porous structure, and ease of manufacture. The bamboo charcoal-based interfacial solar evaporator enhances solar light capturing ability, thereby ensuring high broadband solar light absorption of about 91% in the wavelength range of 200-2500 nm. In addition, metal nanoparticles (including gold, silver, aluminum, and copper) supported on carbon materials can induce Localized Surface Plasmon Resonance (LSPR) effects, exhibiting significant broadband solar light absorption capability in the visible spectrum. In view of this, the present invention has been made. Disclosure of Invention The invention aims to provide a solar photo-thermal conversion material, a preparation method and application thereof, so as to solve the technical problems mentioned in the background art. In order to achieve one of the above objects, the present invention provides the following technical solutions: The solar photothermal conversion material comprises, by weight, 2-5 parts of biomass, 2-10 parts of copper chloride, 5-10 parts of nano ceramic particles, 5-20 parts of 3-aminopropyl triethoxysilane, 10-20 parts of hydroxypropyl methylcellulose and 5-20 parts of felt cloth. Preferably, the biomass is iris sibirica biomass. In order to achieve the second purpose, the invention provides the following technical scheme: a preparation method of a solar photo-thermal conversion material comprises the following steps: S100, planting Siberian iris plant in copper chloride solution, culturing for two months, and harvesting; s200, cleaning, drying and crushing the dried biomass in a 1mmol/L hydrochloric acid solution; s300, mixing the copper-containing dry biomass with kaolin nano ceramic particles, and then performing ball milling to obtain a copper-containing dry biomass reinforcing phase, wherein the mixing ratio is 3:1-1:1; S400, calcining a copper-containing dry biomass reinforcing phase to obtain copper-loaded biochar; s500, mixing the biochar loaded with copper with aminopropyl triethoxysilane and hydroxypropyl methylcellulose to form slurry, and adhering the slurry to felt cloth. Preferably, in said step S100: the concentration of the copper chloride solution is 300mg/L. Preferably, in said step S400: The copper-containing dry biomass-enhancing phase is calcined under N 2 conditions. Preferably, in said step S400: The calcination time was 2 hours and the calcination temperature was 900 ℃. Preferably, in said step S500: The slurry is adhered to one side of the felt cloth, and the other side is not treated. In order to achieve the third object, the present invention provides the following technical solutions: use of a solar photothermal conversion material as described above or a method for the preparation of a solar photothermal conversion material as described above in a sea water evaporator. In order to achieve the fourth purpose, the invention provides the following technical scheme: the solar photo-thermal conversion material or the preparation method of the solar photo-thermal conversion material is applied to sea water desalination and pollutant purification. Compared with the prior art, the solar photo-thermal conversion material, the preparation method and the application thereof can effectively inhibit light reflection and improve absorbance, and in addition, the kaolin nano ceramic particles are used for enhancing biomass, so that the photo-thermal conversion efficiency can still be kept at a higher level under the condition of increasing the solar illumination intensity. In order to make the above objects, features and advantages of the present invention more comprehensible, preferred emb