CN115448400B - Preparation method of wood-based evaporator loaded with metal-organic framework - Google Patents
Preparation method of wood-based evaporator loaded with metal-organic framework Download PDFInfo
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- CN115448400B CN115448400B CN202211035149.4A CN202211035149A CN115448400B CN 115448400 B CN115448400 B CN 115448400B CN 202211035149 A CN202211035149 A CN 202211035149A CN 115448400 B CN115448400 B CN 115448400B
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- 239000002023 wood Substances 0.000 title claims abstract description 117
- 239000012621 metal-organic framework Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000003513 alkali Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000000243 solution Substances 0.000 claims description 32
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 8
- 239000012670 alkaline solution Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 27
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 210000002421 cell wall Anatomy 0.000 abstract description 2
- 238000002207 thermal evaporation Methods 0.000 abstract description 2
- 239000010949 copper Substances 0.000 description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 238000001704 evaporation Methods 0.000 description 13
- 230000008020 evaporation Effects 0.000 description 13
- 230000031700 light absorption Effects 0.000 description 8
- 239000011148 porous material Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- DIRFUJHNVNOBMY-UHFFFAOYSA-N fenobucarb Chemical compound CCC(C)C1=CC=CC=C1OC(=O)NC DIRFUJHNVNOBMY-UHFFFAOYSA-N 0.000 description 4
- 238000003760 magnetic stirring Methods 0.000 description 4
- 239000013384 organic framework Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000012917 MOF crystal Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 241000487918 Acacia argyrodendron Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910002480 Cu-O Inorganic materials 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000003850 cellular structure Anatomy 0.000 description 2
- 235000011222 chang cao shi Nutrition 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000000584 ultraviolet--visible--near infrared spectrum Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- 241000530268 Lycaena heteronea Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 239000013084 copper-based metal-organic framework Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- QMLILIIMKSKLES-UHFFFAOYSA-N triphenylene-2,3,6,7,10,11-hexol Chemical group C12=CC(O)=C(O)C=C2C2=CC(O)=C(O)C=C2C2=C1C=C(O)C(O)=C2 QMLILIIMKSKLES-UHFFFAOYSA-N 0.000 description 1
- 239000010876 untreated wood Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Analytical Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a preparation method of a wood-based evaporator loaded with a metal-organic framework, which is characterized by comprising the following steps of: the method comprises the following steps: alkali treatment, cu (OH) 2/Wood film preparation, HHTP treatment and Cu-CAT/Wood film preparation. The invention provides a wood-based evaporator loaded with a metal-organic framework, which can ensure that MOF materials are uniformly distributed on the cell wall of wood, namely the framework, and has higher yield, photo-thermal evaporation rate and thermal conversion rate.
Description
Technical Field
The invention belongs to the technical field of adsorption separation materials, and particularly relates to a preparation method of a wood-based evaporator loaded with a metal organic framework.
Background
Metal organic framework Materials (MOFs) are emerging porous crystalline materials with wide applications in catalysis, energy storage and separation. Recently, researchers have made tremendous efforts to regulate the microscopic morphology of functional materials, hopefully enhancing their performance in a variety of applications by creating microstructures. The construction of the micro layered structure can generate a light blocking effect, which is beneficial to enhancing light absorption and the absorption bandwidth of the material. In addition, the micro layered structure can cause various super wetting phenomena, and the self-cleaning and oil-stain-resistant adhesion and other surface characteristics can lead the micro layered structure to be widely applied to the fields of oil-water separation, photocatalysis, membrane separation and the like. Therefore, in order to simultaneously enhance light absorption and surface anti-fouling capabilities in solar hot water evaporation, it is necessary to design and synthesize novel materials with unique hierarchical structures.
Solar hot water evaporation has attracted considerable attention as a green, environmentally friendly method of clean water production. In recent years, researchers have designed solar hot water evaporators based on various photo-thermal conversion materials, such as carbon materials, polymers, metal plasmon nanoparticles, oxides thereof, and the like. In addition, some key factors, such as: solar absorptivity, thermal positioning, moisture transport paths, interfacial properties, etc. all affect solar hot water evaporation efficiency. It has been recently reported that some composite materials have excellent properties and versatility, but these materials still show certain disadvantages, such as oil stains and a large amount of salt are usually contained in real waste water or seawater, and the working efficiency is reduced after the evaporator is polluted. Through adjusting the surface wettability and carrying out structural design on the material, the salt deposition on the surface can be effectively prevented, and the photo-thermal conversion efficiency can be effectively improved. However, solar evaporators which can produce both high water vapor and prevent oil stains have been reported.
2,3,6,7,10, 11-hexahydroxytriphenylene, english is called HHTP for short; n, N-dimethylformamide, english is abbreviated as DMF.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the above and/or problems occurring in the prior art.
Therefore, the invention aims to overcome the defects in the prior art and provide a preparation method of the wood-based evaporator loaded with the metal-organic framework.
In order to solve the technical problems, the invention provides the following technical scheme: the preparation method of the wood-based evaporator loaded with the metal-organic framework comprises the following steps:
alkali treatment: immersing wood chips in an alkaline solution for treatment;
preparation of Cu (OH) 2 Wood film: placing the wood chips subjected to alkali treatment on Cu 2+ Treating in solution to obtain Cu (OH) 2 Wood film;
HHTP treatment: dissolving HHTP in deionized water/DMF solution, and reacting with a wood film after ultrasonic dispersion;
preparing the Cu-CAT/Wood film: and cleaning the Wood film subjected to HHTP treatment to obtain the Cu-CAT/Wood film with the black surface.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: in the alkali treatment, the alkaline solution is sodium hydroxide solution, and the treatment time is 2 hours.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: in the alkali treatment, the alkali solution is 10wt% sodium hydroxide solution.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: preparation of Cu (OH) 2 In the Wood film, the stirring arrangement is included, and the stirring is 300rom treatment for 24 hours.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: preparation of Cu (OH) 2 In Wood film, cu 2+ The content is 1-6wt%.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: preparation of Cu (OH) 2 In Wood film, cu 2+ The content was 4wt%.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: in the HHTP treatment, water by volume: dmf=10:1.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: and (3) in the Cu-CAT/Wood film, washing is carried out for three times by respectively washing acetone and water.
As a preferable scheme of the preparation method of the wood-based evaporator loaded with the metal-organic framework, the preparation method comprises the following steps: in the HHTP treatment, the ultrasonic dispersion was 100Hz ultrasonic dispersion for 20min.
The invention has the beneficial effects that:
(1) The scanning electron microscope shows that the MOF material is uniformly distributed on the cell wall and the skeleton of the wood, and the test characterization shows that the black wood evaporation material has good hydrophilicity, and compared with untreated wood, the black wood evaporation material has the advantages that a certain volume of liquid drops contact the surface of a sample, and are immersed into a wood pore canal for less than 1 s.
(2) In the visible and infrared regions, the samples have a high light absorption efficiency of 96%. The contact angle of the water base oil is 162 degrees. The Cu-CAT/Wood solar evaporator can realize 1.8kg m under the irradiation of one sunlight due to the high sunlight absorption capacity, hydrophilicity and underwater super-oleophobic surface characteristics -2 h -1 The photo-thermal evaporation rate of (2) and the thermal conversion efficiency were 82%.
(3) The material has excellent oil stain resistance, and can realize excellent evaporation performance even in oil-contaminated water, 1.62kg m -2 h -1 . Gao Guangre evaporation rate and oil stain resistance make Cu-CAT/Wood materials promising for photothermal cleaning water production materials.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is an identification chart of the product obtained in example 1 of the present invention;
in the figure, a is an SEM (electron microscope) map of a wood-based evaporator loaded with a metal-organic framework, which is prepared in example 1; b is the XRD pattern of the wood-based evaporator and the natural wood with the metal-organic framework loaded, which are prepared in the embodiment 1; c is the FT-IR (infrared) spectrum of the natural wood and the wood-based evaporator with the metal-organic framework prepared in the example 1; d is the ultraviolet-visible-near infrared spectrum of the wood-based evaporator and the natural wood loaded with the metal-organic frameworks prepared in the example 1.
FIG. 2 shows a sample of the present invention according to example 1.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Pre-cut 30X 10mm 3 The bassa wood chips are immersed in 10wt% sodium hydroxide solution, and then the whole is transferred into a vacuum environment for 2 hours, so that alkali liquor is fully immersed into the pore canal of the wood; subsequently, the wood chips were placed in a mass fraction of 4wt% Cu 2+ In the solution, magnetic stirring is carried out for 24 hours at the normal temperature at 300rpm, and the solution is washed by deionized water to obtain Cu (OH) 2 Wood film; 20mg of HHTP is dissolved in deionized water/DMF solution (V: V=100 ml:10 ml), and the solution is subjected to ultrasonic dispersion at 100Hz for 20min, reacted with a Wood film at 70 ℃ for 4h, finally, acetone and water are rinsed respectively for three times to remove unreacted solvent, and a Cu-CAT/Wood film with a black surface of 10mm is obtained, as shown in a graph (e), after simulating sunlight (1 Kw m -2 ) In the first 10min, the water evaporation rate was 1.8kg m -2 h -1 。
Referring to the drawings, fig. (a) is an SEM (electron microscope) spectrum of a wood-based evaporator loaded with a metal organic framework prepared in example 1. From the figure it can be observed that the MOF loaded material remains microscopically porous, indicating that the loaded natural channels do not plug the wood. After being loaded with Cu-CAT MOF materials, the cell cavity wall and the skeleton surface are rough.
Referring to the drawings, fig. (b) is a metal organic framework-supported wood-based evaporator and a natural wood XRD pattern obtained in example 1. The arrows in the figure are positioned at 16.2 degrees and 22.3 degrees and respectively belong to a cellulose (100) plane and a cellulose (002) plane, and after MOF material is loaded, the diffraction peak still exists, which indicates that most of fibers are reserved in the modified wood, and the structure of the cellulose is not destroyed; the characteristic peaks corresponding to the dashed boxes can be well matched with the peaks of Cu-CAT MOF in the literature, and no corresponding diffraction peaks are detected in Wood samples, so that the Cu-CAT MOF crystals can be successfully loaded on the Wood surface.
Referring to the drawings, FIG. (c) is a FT-IR (infrared) spectrum of a natural wood and a wood-based evaporator supporting a metal-organic framework obtained in example 1. From the figure, it can be observed that the peak values of all samples are 3425cm, respectively -1 Belongs to the-OH of wood. Centered at 1593cm -1 The absorption band at this point is generated by the interaction of ligand HHPT with Cu-O, and its peak intensity changes and shifts significantly. Further indicating successful synthesis of Cu-CAT MOF materials.
Referring to the drawings, fig. (d) is an ultraviolet-visible-near infrared spectrum of the wood-based evaporator and the natural lumber loaded with the metal-organic frameworks prepared in example 1. The log film can be seen to have a lower light absorption. In contrast, cu-CAT/Wood films exhibited higher light absorption (96%). Wood has a natural cellular structure, and after loading with organic framework material, its surface remains open-pore structure, which increases the reflection of light at the wood surface.
Example 2
Pre-cut 30X 10mm 3 The bassa wood chips are immersed in 10wt% sodium hydroxide solution, and then the whole is transferred into a vacuum environment for 2 hours, so that alkali liquor is fully immersed into the pore canal of the wood; subsequently, the wood chips were subjected to Cu in a mass fraction of 1wt% 2+ In the solution, magnetic stirring is carried out for 24 hours at the normal temperature at 300rpm, and the solution is washed by deionized water to obtain Cu (OH) 2 Wood film; 20mg of HHTP is dissolved in deionized water/DMF solution (V: V=100 ml:10 ml), ultrasonic dispersion is carried out for 20min at 100Hz, the solution reacts with a Wood film for 4h at 70 ℃, finally acetone and water are respectively leached for three times to remove unreacted solvent, a Cu-CAT/Wood film with a black surface of 1mm is obtained, and the film is prepared in the presence of simulated sunlight (1 kW m -2 ) Under the irradiation of (a) the light,the water evaporation rate was 1.58kg m during the first 10min -2 h -1 。
Example 3
Pre-cut 30X 10mm 3 The bassa wood chips are immersed in 10wt% sodium hydroxide solution, and then the whole is transferred into a vacuum environment for 2 hours, so that alkali liquor is fully immersed into the pore canal of the wood; subsequently, the wood chips were subjected to Cu in a mass fraction of 2wt% 2+ In the solution, magnetic stirring is carried out for 24 hours at the normal temperature at 300rpm, and the solution is washed by deionized water to obtain Cu (OH) 2 Wood film; 20mg of HHTP is dissolved in deionized water/DMF solution (V: V=100 ml:10 ml), dispersed for 20min by 100Hz ultrasonic, reacted with Wood film at 70 ℃ for 4h, finally, acetone and water are rinsed three times respectively to remove unreacted solvent, and the Cu-CAT/Wood film with a black surface of 5mm is obtained, and the film is prepared by using the method in the condition of simulating sunlight (1 Kw m -2 ) In the first 10min, the water evaporation rate was 1.62kg m -2 h -1 。
Example 4
Pre-cut 30X 10mm 3 The bassa wood chips are immersed in 10wt% sodium hydroxide solution, and then the whole is transferred into a vacuum environment for 2 hours, so that alkali liquor is fully immersed into the pore canal of the wood; subsequently, the wood chips were subjected to Cu in a mass fraction of 6wt% 2+ In the solution, magnetic stirring is carried out for 24 hours at the normal temperature at 300rpm, and the solution is washed by deionized water to obtain Cu (OH) 2 Wood film; 20mg of HHTP is dissolved in deionized water/DMF solution (V: V=10:1), dispersed for 20min by 100Hz ultrasonic, reacted with Wood film at 70 ℃ for 4h, finally, acetone and water are rinsed three times respectively to remove unreacted solvent, and the Cu-CAT/Wood film with a black surface of 10mm is obtained, as shown in a graph (e), after simulating sunlight (1 Kw m -2 ) In the first 10min, the water evaporation rate was 1.83kg m -2 h -1 。
It can be seen that my invention coats copper-based metal organic frameworks (Cu-CAT) on wood boards to form wood evaporators, and generates electricity through interfacial solar steam to obtain sufficient and safe fresh water. The wood substrate with low thermal conductivity is responsible for continuous water transport. The Cu-CAT layer is tightly adhered to the top and bottom surfaces of the wood substrate. The top black Cu-CAT provides broadband and strong light absorption, while the underwater super oleophobic Cu-CAT layer has high oil repellency. The Cu-CAT/Wood evaporator has high solar steam generation efficiency, and can extract clean water from seawater, wastewater (containing dye, heavy metal ions or oil) and natural lake water. In addition, the solar energy evaporation device can generate electricity in the water purification process.
Growing copper-based organic frameworks on wood substrates we innovatively pretreat the material with 10wt% sodium hydroxide for two reasons: (i) The sodium hydroxide solution treatment gives certain alkalinity to the wood substrate, which is the condition for synthesizing blue copper hydroxide precursor; (ii) The wood can remove partial hydrophobic lignin under the condition of sodium hydroxide, so that the hydrophilicity of the wood matrix is increased, and moisture can be quickly transferred when steam is generated. Wherein, blue Cu (OH) is prepared 2 As part of the sacrificial template, a Cu source was provided for MOF synthesis, and Cu-CAT MOF crystals were synthesized in situ on wood. Experimental results show that under the hydrothermal condition of 70 ℃, the original color cuboid material with wood turns black after being loaded with the copper-based organic framework material.
The Cu-CAT wood evaporator produces and freely generates steam, and the Cu-CAT coating is a light absorber, which concentrates light and localizes heat to localized areas, where the steam escapes in an open cell structure. In addition, wood substrates have good hydrophilicity, vertical channels pump water upward and create concentration differences, and salts are difficult to deposit on the evaporator surface. The wood substrate can transmit water for steam generation and can be used as a heat insulating layer due to good hydrophilicity and low heat conductivity, so that the evaporation rate of solar hot water is improved.
As can be seen from fig. 1a, the MOF loaded material is observed to remain microscopically porous, indicating that the loaded natural channels do not plug the wood. After being loaded with Cu-CAT MOF materials, the cell cavity wall and the skeleton surface are rough.
As can be seen from fig. 1b, the arrows at 16.2 ° and 22.3 ° in the figure are respectively assigned to the (100) and (002) cellulose planes, and after loading with MOF material, the diffraction peaks still exist, indicating that most of the fibers remain in the modified wood and that the structure of the cellulose is not destroyed; the characteristic peaks corresponding to the dashed boxes can be well matched with the peaks of Cu-CAT MOF in the literature, and no corresponding diffraction peaks are detected in Wood samples, so that the Cu-CAT MOF crystals can be successfully loaded on the Wood surface.
As can be seen from FIG. 1c, all samples have peaks of 3425cm, respectively -1 Belongs to the-OH of wood. Centered at 1593cm -1 The absorption band at this point is generated by the interaction of ligand HHPT with Cu-O, and its peak intensity changes and shifts significantly. Further indicating successful synthesis of Cu-CAT MOF materials.
As can be seen from fig. 1d, it can be seen that the log film has a lower light absorption. In contrast, cu-CAT/Wood films exhibited higher light absorption (96%). Wood has a natural cellular structure, and after loading with organic framework material, its surface remains open-pore structure, which increases the reflection of light at the wood surface.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (5)
1. A preparation method of a wood-based evaporator loaded with a metal-organic framework is characterized by comprising the following steps of: the method comprises the following steps:
alkali treatment: immersing wood chips in an alkaline solution for treatment;
preparation of Cu (OH) 2 Wood film: placing the wood chips subjected to alkali treatment on Cu 2+ Treating in solution to obtain Cu (OH) 2 Wood film;
HHTP treatment: dissolving HHTP in deionized water/DMF solution, and reacting with a wood film after ultrasonic dispersion;
preparing the Cu-CAT/Wood film: cleaning the Wood film subjected to HHTP treatment to obtain a Cu-CAT/Wood film with a black surface;
in the alkali treatment, the alkaline solution is sodium hydroxide solution, and the treatment time is 2 hours;
said preparation of Cu (OH) 2 In Wood film, cu 2+ The content is 1-6wt%;
in the HHTP treatment, water: dmf=10:1.
2. The method for preparing a wood-based evaporator loaded with a metal-organic framework as set forth in claim 1, wherein: in the alkali treatment, the alkaline solution is 10wt% sodium hydroxide solution.
3. The method for producing a metal-organic framework-supported wood-based evaporator according to claim 1, characterized in that: said preparation of Cu (OH) 2 In the Wood film, the stirring arrangement is included, and the stirring is 300rm treatment for 24 hours.
4. The method for producing a metal-organic framework-supported wood-based evaporator according to claim 1, characterized in that: in the Cu-CAT/Wood film, the cleaning is performed by three times of leaching by acetone and water respectively.
5. The method for producing a metal-organic framework-supported wood-based evaporator according to claim 1, characterized in that: in the HHTP treatment, the ultrasonic dispersion is 100Hz ultrasonic dispersion for 20min.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459404A (en) * | 2011-02-04 | 2013-12-18 | 加利福尼亚大学董事会 | Preparation of metal-catecholate frameworks |
| WO2021092318A1 (en) * | 2019-11-08 | 2021-05-14 | Virginia Commonwealth University Intellectual Property Foundation | Removal of vocs and fine particulate matter by metal organic frameworks coated electret media (e-mofilter) |
| CN112959446A (en) * | 2021-02-01 | 2021-06-15 | 国际竹藤中心 | Metal organic framework/wood composite material and preparation method and application thereof |
| CN113815072A (en) * | 2021-08-13 | 2021-12-21 | 南京林业大学 | Wood-based composite material for photo-thermal sewage purification and preparation method and application thereof |
| CN113831749A (en) * | 2021-10-21 | 2021-12-24 | 西南林业大学 | Preparation method of double MOF/biomass-based multifunctional composite material |
| CN114181614A (en) * | 2021-11-29 | 2022-03-15 | 江苏理工学院 | MOF-based photo-thermal deicing coating and preparation method thereof |
| CN114920947A (en) * | 2022-05-18 | 2022-08-19 | 南方科技大学 | MOF material for seawater desalination, preparation method thereof and seawater desalination device based on MOF material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101923825B1 (en) * | 2017-08-24 | 2019-02-27 | 국방과학연구소 | Decontaminating agent for chemical warfare agents, method for decontaminating chemical warfare agents using the same and article comprising the same |
| KR20200103839A (en) * | 2018-01-12 | 2020-09-02 | 유니버시티 오브 사우스 플로리다 | Multifunctional porous material for water purification and restoration |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459404A (en) * | 2011-02-04 | 2013-12-18 | 加利福尼亚大学董事会 | Preparation of metal-catecholate frameworks |
| WO2021092318A1 (en) * | 2019-11-08 | 2021-05-14 | Virginia Commonwealth University Intellectual Property Foundation | Removal of vocs and fine particulate matter by metal organic frameworks coated electret media (e-mofilter) |
| CN112959446A (en) * | 2021-02-01 | 2021-06-15 | 国际竹藤中心 | Metal organic framework/wood composite material and preparation method and application thereof |
| CN113815072A (en) * | 2021-08-13 | 2021-12-21 | 南京林业大学 | Wood-based composite material for photo-thermal sewage purification and preparation method and application thereof |
| CN113831749A (en) * | 2021-10-21 | 2021-12-24 | 西南林业大学 | Preparation method of double MOF/biomass-based multifunctional composite material |
| CN114181614A (en) * | 2021-11-29 | 2022-03-15 | 江苏理工学院 | MOF-based photo-thermal deicing coating and preparation method thereof |
| CN114920947A (en) * | 2022-05-18 | 2022-08-19 | 南方科技大学 | MOF material for seawater desalination, preparation method thereof and seawater desalination device based on MOF material |
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