CN115819996B - Functionalized molybdenum disulfide and preparation method thereof, photothermal coating and application thereof - Google Patents
Functionalized molybdenum disulfide and preparation method thereof, photothermal coating and application thereof Download PDFInfo
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 229910052982 molybdenum disulfide Inorganic materials 0.000 title claims abstract description 135
- 238000000576 coating method Methods 0.000 title claims abstract description 66
- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000002135 nanosheet Substances 0.000 claims abstract description 24
- 239000005416 organic matter Substances 0.000 claims abstract description 23
- PJUIMOJAAPLTRJ-UHFFFAOYSA-N monothioglycerol Chemical compound OCC(O)CS PJUIMOJAAPLTRJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229940035024 thioglycerol Drugs 0.000 claims abstract description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 229920002635 polyurethane Polymers 0.000 claims description 26
- 239000004814 polyurethane Substances 0.000 claims description 26
- 239000000839 emulsion Substances 0.000 claims description 17
- 239000011230 binding agent Substances 0.000 claims description 15
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 15
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 15
- 239000002562 thickening agent Substances 0.000 claims description 15
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 13
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 13
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 13
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 13
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 13
- 239000004094 surface-active agent Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 6
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 1
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 abstract description 18
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 9
- 125000000524 functional group Chemical group 0.000 abstract description 8
- 150000003573 thiols Chemical class 0.000 abstract description 8
- UFULAYFCSOUIOV-UHFFFAOYSA-N cysteamine Chemical compound NCCS UFULAYFCSOUIOV-UHFFFAOYSA-N 0.000 abstract description 7
- 229960003151 mercaptamine Drugs 0.000 abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 6
- 238000010612 desalination reaction Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 9
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 5
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052961 molybdenite Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
本发明提供了一种功能化二硫化钼及其制备方法、光热涂料及其应用。本发明的功能化二硫化钼的制备方法，包括以下步骤：将二硫化钼纳米片与含巯基的有机物经过反应，即得功能化二硫化钼；其中，含巯基的有机物包括巯基乙酸、硫代甘油、巯基乙胺中的至少一种。本发明的功能化二硫化钼的制备方法，通过官能团改性在二硫化钼表面引入羧基、羟基、氨基三种官能团，再与有机物复合制成涂料，从而低成本、规模化地实现二硫化钼光热应用；功能化二硫化钼操作简单，实现二硫化钼与有机物的结合，为后续涂料化奠定基础；二硫化钼功能化与有机物结合制成涂料用于光热脱盐，实现低成本、绿色高效的二硫化钼光热应用。
The present invention provides a functionalized molybdenum disulfide and a preparation method thereof, a photothermal coating and an application thereof. The preparation method of the functionalized molybdenum disulfide of the present invention comprises the following steps: reacting molybdenum disulfide nanosheets with a thiol-containing organic matter to obtain functionalized molybdenum disulfide; wherein the thiol-containing organic matter comprises at least one of thioglycolic acid, thioglycerol, and mercaptoethylamine. The preparation method of the functionalized molybdenum disulfide of the present invention introduces three functional groups, namely carboxyl, hydroxyl, and amino, on the surface of molybdenum disulfide through functional group modification, and then composites with organic matter to form a coating, thereby realizing the photothermal application of molybdenum disulfide at low cost and on a large scale; the functionalized molybdenum disulfide is simple to operate, and the combination of molybdenum disulfide and organic matter is realized, laying the foundation for subsequent coating; the functionalized molybdenum disulfide is combined with organic matter to form a coating for photothermal desalination, realizing low-cost, green and efficient photothermal application of molybdenum disulfide.
Description
技术领域Technical Field
本发明涉及涂料技术领域，尤其涉及一种功能化二硫化钼及其制备方法、光热涂料及其应用。The present invention relates to the technical field of coatings, and in particular to a functionalized molybdenum disulfide and a preparation method thereof, a photothermal coating and an application thereof.
背景技术Background technique
淡水资源短缺是21世纪最具挑战性的问题之一，地球表面96.5％的水资源是海水，因此海水淡化是一种理想的解决方案。太阳能作为一种可再生的清洁能源，通过将太阳能转化为热能加热液态水产生蒸汽生成淡水是一种可持续发展的方法。近年来，二硫化钼因其丰富的地球储量，化学性能稳定及优异的二硫化钼作为太阳能蒸汽生成的潜在功能材料。由于量子的限制效应，体相MoS2剥离成单层MoS2纳米片，随着层数的减少，间接带隙逐渐增大，层数减至单层时，间接带隙1.2eV转变为直接带隙1.9eV，电子性质会发生显著变化，其与体材料相比，近红外吸光度显著增加，能表现出高效的光热效应。但是，因为二硫化钼表面缺少相应的官能团，限制了与有机物的复合，基于此，有必要对此进行改进。Freshwater shortage is one of the most challenging problems in the 21st century. 96.5% of the water resources on the earth's surface are seawater, so desalination is an ideal solution. Solar energy is a renewable clean energy. It is a sustainable way to generate fresh water by converting solar energy into thermal energy to heat liquid water to produce steam. In recent years, molybdenum disulfide has been used as a potential functional material for solar steam generation due to its abundant earth reserves, stable chemical properties and excellent molybdenum disulfide. Due to the quantum confinement effect, the bulk MoS2 is peeled off into a single-layer MoS2 nanosheet. As the number of layers decreases, the indirect band gap gradually increases. When the number of layers is reduced to a single layer, the indirect band gap of 1.2eV is transformed into a direct band gap of 1.9eV, and the electronic properties will change significantly. Compared with the bulk material, its near-infrared absorbance is significantly increased, and it can show an efficient photothermal effect. However, because the surface of molybdenum disulfide lacks corresponding functional groups, it limits the composite with organic matter. Based on this, it is necessary to improve it.
发明内容Summary of the invention
有鉴于此，本发明提出了一种功能化二硫化钼及其制备方法、光热涂料及其应用，以解决或部分解决现有技术中存在的技术问题。In view of this, the present invention proposes a functionalized molybdenum disulfide and a preparation method thereof, a photothermal coating and an application thereof, so as to solve or partially solve the technical problems existing in the prior art.
第一方面，本发明提供了一种功能化二硫化钼的制备方法，包括以下步骤：In a first aspect, the present invention provides a method for preparing functionalized molybdenum disulfide, comprising the following steps:
将二硫化钼纳米片与含巯基的有机物经过反应，即得功能化二硫化钼；The molybdenum disulfide nanosheets are reacted with organic matter containing thiol groups to obtain functionalized molybdenum disulfide;
其中，含巯基的有机物包括巯基乙酸、硫代甘油、巯基乙胺中的至少一种。The thiol-containing organic matter includes at least one of thioglycolic acid, thioglycerol, and mercaptoethylamine.
优选的是，所述的功能化二硫化钼的制备方法，将二硫化钼纳米片、含巯基的有机物和水混合后，超声处理1～5h，然后搅拌20～30h，过滤，即得功能化二硫化钼。Preferably, the preparation method of the functionalized molybdenum disulfide comprises mixing molybdenum disulfide nanosheets, thiol-containing organic matter and water, ultrasonically treating for 1 to 5 hours, stirring for 20 to 30 hours, and filtering to obtain the functionalized molybdenum disulfide.
优选的是，所述的功能化二硫化钼的制备方法，所述二硫化钼纳米片、含巯基的有机物和水的质量比为(0.05～0.2):(0.1～15):(5～100)。Preferably, in the method for preparing functionalized molybdenum disulfide, the mass ratio of the molybdenum disulfide nanosheets, the thiol-containing organic matter and water is (0.05-0.2):(0.1-15):(5-100).
第二方面，本发明还提供了一种功能化二硫化钼，采用所述的制备方法制备得到。In a second aspect, the present invention also provides a functionalized molybdenum disulfide prepared by the preparation method.
第三方面，本发明还提供了一种光热涂料，包括所述的制备方法制备得到的功能化二硫化钼或所述的功能化二硫化钼。In a third aspect, the present invention also provides a photothermal coating, including the functionalized molybdenum disulfide prepared by the preparation method or the functionalized molybdenum disulfide.
优选的是，所述的光热涂料，还包括：粘结剂、增稠剂、分散剂和表面活性剂。Preferably, the photothermal coating further comprises: a binder, a thickener, a dispersant and a surfactant.
优选的是，所述的光热涂料，所述粘结剂为水性聚氨酯乳液；Preferably, in the photothermal coating, the binder is a water-based polyurethane emulsion;
和/或，所述增稠剂包括羧甲基纤维素和/或羟乙基纤维素；and/or, the thickener comprises carboxymethyl cellulose and/or hydroxyethyl cellulose;
和/或，所述分散剂包括水和异丙醇；and/or, the dispersant comprises water and isopropanol;
和/或，所述表面活性剂为十二烷基苯磺酸钠。And/or, the surfactant is sodium dodecylbenzene sulfonate.
优选的是，所述的光热涂料，所述功能化二硫化钼、粘结剂、增稠剂、分散剂和表面活性剂的质量比为(1～5):(5～25):(1～10):(30～120):(0.01～0.05)。Preferably, in the photothermal coating, the mass ratio of the functionalized molybdenum disulfide, binder, thickener, dispersant and surfactant is (1-5):(5-25):(1-10):(30-120):(0.01-0.05).
第四方面，本发明还提供了一种所述的光热涂料的制备方法，包括如下步骤：In a fourth aspect, the present invention further provides a method for preparing the photothermal coating, comprising the following steps:
将功能化二硫化钼加入至分散剂中，再加入表面活性剂，搅拌，然后加入粘结剂、增稠剂，继续搅拌即得光热涂料。Functionalized molybdenum disulfide is added to the dispersant, and then a surfactant is added, stirred, and then a binder and a thickener are added, and stirring is continued to obtain the photothermal coating.
第五方面，本发明还提供了一种所述的光热涂料或所述的制备方法制备得到的光热涂料作为光热材料的应用。In a fifth aspect, the present invention also provides an application of the photothermal coating or the photothermal coating prepared by the preparation method as a photothermal material.
本发明的一种功能化二硫化钼的制备方法、光热涂料相对于现有技术具有以下有益效果：The preparation method of functionalized molybdenum disulfide and the photothermal coating of the present invention have the following beneficial effects compared with the prior art:
本发明的功能化二硫化钼的制备方法，通过采用巯基乙酸、硫代甘油、巯基乙胺与二硫化钼纳米片反应，通过官能团改性在二硫化钼表面引入羧基、羟基、氨基三种官能团，再与有机物复合制成涂料，从而低成本、规模化地实现二硫化钼光热应用；功能化二硫化钼操作简单，实现二硫化钼与有机物的结合，为后续涂料化奠定基础；二硫化钼功能化与有机物结合制成涂料用于光热脱盐，实现低成本、绿色高效的二硫化钼光热应用。The preparation method of functionalized molybdenum disulfide of the present invention adopts thioglycolic acid, thioglycerol and mercaptoethylamine to react with molybdenum disulfide nanosheets, introduces three functional groups, namely carboxyl, hydroxyl and amino, on the surface of molybdenum disulfide through functional group modification, and then compounds with organic matter to form a coating, thereby realizing low-cost and large-scale photothermal application of molybdenum disulfide; the functionalized molybdenum disulfide is simple to operate, and the combination of molybdenum disulfide and organic matter is realized, laying the foundation for subsequent coating; the functionalized molybdenum disulfide is combined with organic matter to form a coating for photothermal desalination, realizing low-cost, green and efficient photothermal application of molybdenum disulfide.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
图1为本发明实施例1～3中制备得到的功能化二硫化钼的红外光谱图；FIG1 is an infrared spectrum of the functionalized molybdenum disulfide prepared in Examples 1 to 3 of the present invention;
图2为实施例4中光热涂料制成的蒸发器的实物图；FIG2 is a physical picture of an evaporator made of photothermal coating in Example 4;
图3为不同蒸发器在光照下盐水随时间质量变化；Figure 3 shows the change in brine quality over time under light for different evaporators;
图4为1KW m-2光强下不同蒸发器的蒸发速率和相应的蒸发效率；Figure 4 shows the evaporation rates and corresponding evaporation efficiencies of different evaporators under a light intensity of 1KW m -2 ;
图5为不同蒸发器在在1KW m-2光照1h后表面温度变化；Figure 5 shows the surface temperature changes of different evaporators after 1KW m -2 light irradiation for 1 hour;
图6为功能化二硫化钼化学式；Figure 6 is the chemical formula of functionalized molybdenum disulfide;
图7为功能化二硫化钼、水性聚氨酯及羟甲基纤维素/羟乙基纤维素发生的反应。FIG. 7 shows the reaction between functionalized molybdenum disulfide, waterborne polyurethane and hydroxymethyl cellulose/hydroxyethyl cellulose.
具体实施方式Detailed ways
下面将结合本发明实施方式，对本发明实施方式中的技术方案进行清楚、完整的描述，显然，所描述的实施方式仅仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
本申请实施例提供了一种功能化二硫化钼的制备方法，包括以下步骤：The present invention provides a method for preparing functionalized molybdenum disulfide, comprising the following steps:
将二硫化钼纳米片与含巯基的有机物经过反应，即得功能化二硫化钼；The molybdenum disulfide nanosheets are reacted with organic matter containing thiol groups to obtain functionalized molybdenum disulfide;
其中，含巯基的有机物包括巯基乙酸、硫代甘油、巯基乙胺中的至少一种。The thiol-containing organic matter includes at least one of thioglycolic acid, thioglycerol, and mercaptoethylamine.
上述实施例中，二硫化钼与巯基乙酸反应得到羧基功能化二硫化钼，二硫化钼与硫代甘油反应得到羟基功能化二硫化钼，二硫化钼与巯基乙胺反应得到氨基功能化二硫化钼；通过官能团改性在二硫化钼表面引入羧基、羟基、氨基三种官能团，再与有机物复合制成涂料，从而低成本、规模化地实现二硫化钼光热应用；功能化二硫化钼操作简单，实现二硫化钼与有机物的结合，为后续涂料化奠定基础；二硫化钼功能化与有机物结合制成涂料用于光热脱盐，实现低成本、绿色高效的二硫化钼光热应用。In the above embodiments, molybdenum disulfide reacts with thioglycolic acid to obtain carboxyl-functionalized molybdenum disulfide, molybdenum disulfide reacts with thioglycerol to obtain hydroxyl-functionalized molybdenum disulfide, and molybdenum disulfide reacts with mercaptoethylamine to obtain amino-functionalized molybdenum disulfide; three functional groups, carboxyl, hydroxyl, and amino, are introduced on the surface of molybdenum disulfide through functional group modification, and then compounded with organic matter to form a coating, thereby realizing low-cost and large-scale photothermal application of molybdenum disulfide; functionalized molybdenum disulfide is simple to operate, and realizes the combination of molybdenum disulfide and organic matter, laying the foundation for subsequent coating; functionalized molybdenum disulfide is combined with organic matter to form a coating for photothermal desalination, realizing low-cost, green and efficient photothermal application of molybdenum disulfide.
在一些实施例中，将二硫化钼纳米片、含巯基的有机物和水混合后，超声处理1～5h，然后搅拌20～30h，过滤，即得功能化二硫化钼。In some embodiments, molybdenum disulfide nanosheets, thiol-containing organic matter and water are mixed, ultrasonically treated for 1 to 5 hours, stirred for 20 to 30 hours, and filtered to obtain functionalized molybdenum disulfide.
在一些实施例中，二硫化钼纳米片、含巯基的有机物和水的质量比为(0.05～0.2):(0.1～15):(5～100)。In some embodiments, the mass ratio of molybdenum disulfide nanosheets, thiol-containing organic matter and water is (0.05-0.2):(0.1-15):(5-100).
在一些实施例中，二硫化钼纳米片既可以直接购买也可以采用常规方法电化学液相超声剥离制得，二硫化钼纳米片粒径≤100nm。In some embodiments, the molybdenum disulfide nanosheets can be purchased directly or prepared by conventional electrochemical liquid phase ultrasonic exfoliation, and the particle size of the molybdenum disulfide nanosheets is ≤100 nm.
基于同一发明构思，本申请实施例还提供了一种功能化二硫化钼，采用上述的制备方法制备得到。Based on the same inventive concept, an embodiment of the present application also provides a functionalized molybdenum disulfide, which is prepared using the above-mentioned preparation method.
基于同一发明构思，本申请实施例还提供了一种光热涂料，上述的功能化二硫化钼。Based on the same inventive concept, an embodiment of the present application also provides a photothermal coating, the above-mentioned functionalized molybdenum disulfide.
在一些实施例中，光热涂料，还包括：粘结剂、增稠剂、分散剂和表面活性剂。In some embodiments, the photothermal coating further includes: a binder, a thickener, a dispersant, and a surfactant.
在一些实施例中，粘结剂为水性聚氨酯乳液；In some embodiments, the binder is an aqueous polyurethane emulsion;
和/或，增稠剂包括羧甲基纤维素和/或羟乙基纤维素；and/or, the thickener comprises carboxymethyl cellulose and/or hydroxyethyl cellulose;
和/或，分散剂包括水和异丙醇，水和异丙醇的质量比为(30～60):(30～60)；And/or, the dispersant comprises water and isopropanol, and the mass ratio of water to isopropanol is (30-60):(30-60);
和/或，表面活性剂为十二烷基苯磺酸钠。And/or, the surfactant is sodium dodecylbenzene sulfonate.
在一些实施例中，功能化二硫化钼、粘结剂、增稠剂、分散剂和表面活性剂的质量比为(1～5):(5～25):(1～10):(30～120):(0.01～0.05)。In some embodiments, the mass ratio of functionalized molybdenum disulfide, binder, thickener, dispersant and surfactant is (1-5):(5-25):(1-10):(30-120):(0.01-0.05).
具体的，在一些实施例中，光热涂料包括以下重量份组分：Specifically, in some embodiments, the photothermal coating includes the following components in parts by weight:
羧基功能化二硫化钼：1～5份；Carboxyl functionalized molybdenum disulfide: 1-5 parts;
水：30～60份；Water: 30-60 parts;
异丙醇：30～60份；Isopropyl alcohol: 30-60 parts;
十二烷基苯磺酸钠：0.01～0.05份；Sodium dodecylbenzenesulfonate: 0.01-0.05 parts;
水性聚氨酯乳液：5～25份；Water-based polyurethane emulsion: 5-25 parts;
羟乙基纤维素：1～5份。Hydroxyethyl cellulose: 1 to 5 parts.
在一些实施例中，光热涂料包括以下重量份组分：In some embodiments, the photothermal coating comprises the following components in parts by weight:
羟基功能化二硫化钼：1～5份；Hydroxyl functionalized molybdenum disulfide: 1 to 5 parts;
水：30～60份；Water: 30-60 parts;
异丙醇：30～60份；Isopropyl alcohol: 30-60 parts;
十二烷基苯磺酸钠：0.01～0.05份；Sodium dodecylbenzene sulfonate: 0.01-0.05 parts;
水性聚氨酯乳液：5～25份；Water-based polyurethane emulsion: 5-25 parts;
羟甲基纤维素：1～5份。Hydroxymethyl cellulose: 1 to 5 parts.
在一些实施例中，光热涂料包括以下重量份组分：In some embodiments, the photothermal coating comprises the following components in parts by weight:
氨基功能化二硫化钼：1～5份；Amino-functionalized molybdenum disulfide: 1 to 5 parts;
水：30～60份；Water: 30-60 parts;
异丙醇：30～60份；Isopropyl alcohol: 30-60 parts;
十二烷基苯磺酸钠：0.01～0.05份；Sodium dodecylbenzene sulfonate: 0.01-0.05 parts;
水性聚氨酯乳液：5～25份；Water-based polyurethane emulsion: 5-25 parts;
羟甲基纤维素：1～5份。Hydroxymethyl cellulose: 1 to 5 parts.
本申请的光热涂料，以水性聚氨酯乳液为粘结剂，羧甲基纤维素和羟乙基纤维素为增稠剂，同时羟基和氨基功能化二硫化钼与羧甲基纤维素反应结合，羧基功能化二硫化钼与羟乙基纤维素结合；涂料使用的分散剂(水和异丙醇溶液)、粘结剂(水性聚氨酯乳液)、增稠剂(羧甲基纤维素、羟乙基纤维素)都为绿色无毒，不会给环境带来负面影响；The photothermal coating of the present application uses water-based polyurethane emulsion as a binder, carboxymethyl cellulose and hydroxyethyl cellulose as thickeners, and hydroxyl and amino functionalized molybdenum disulfide react and combine with carboxymethyl cellulose, and carboxyl functionalized molybdenum disulfide combines with hydroxyethyl cellulose; the dispersant (water and isopropanol solution), binder (water-based polyurethane emulsion), and thickener (carboxymethyl cellulose, hydroxyethyl cellulose) used in the coating are all green and non-toxic, and will not bring negative impacts to the environment;
具体的，功能化二硫化钼化学式图6所示。Specifically, the chemical formula of functionalized molybdenum disulfide is shown in FIG6 .
水性聚氨酯的化学式为：The chemical formula of waterborne polyurethane is:
羟甲基纤维素的化学式为：The chemical formula of hydroxymethyl cellulose is:
羟乙基纤维素的化学式为：The chemical formula of hydroxyethyl cellulose is:
功能化二硫化钼、水性聚氨酯及羟甲基纤维素/羟乙基纤维素发生的反应如图7所示。The reaction between functionalized molybdenum disulfide, waterborne polyurethane and hydroxymethyl cellulose/hydroxyethyl cellulose is shown in FIG7 .
基于同一发明构思，本申请实施例还提供了一种上述的光热涂料的制备方法，包括如下步骤：Based on the same inventive concept, the present application also provides a method for preparing the above-mentioned photothermal coating, comprising the following steps:
将功能化二硫化钼加入至分散剂中，再加入表面活性剂，搅拌，然后加入粘结剂、增稠剂，继续搅拌即得光热涂料。Functionalized molybdenum disulfide is added to the dispersant, and then a surfactant is added, stirred, and then a binder and a thickener are added, and stirring is continued to obtain the photothermal coating.
本申请的光热涂料的制备方法，功能化二硫化钼分散在异丙醇和水溶液中，并加入表面活性剂十二烷基苯磺酸钠保证溶液稳定性；水性聚氨酯乳液为粘结剂，羧甲基纤维素和羟乙基纤维素为增稠剂，从而使二硫化钼稳定分散在溶液体系中，不会沉淀，制得涂料防水，在水体环境应用不会发生脱落；涂料化使二硫化钼涂覆在合适的基材上进行大规模、低成本绿色应用。The preparation method of the photothermal coating of the present application is as follows: functionalized molybdenum disulfide is dispersed in isopropanol and an aqueous solution, and a surfactant, sodium dodecylbenzene sulfonate, is added to ensure the stability of the solution; an aqueous polyurethane emulsion is used as a binder, and carboxymethyl cellulose and hydroxyethyl cellulose are used as thickeners, so that the molybdenum disulfide is stably dispersed in the solution system without precipitation, and the coating is waterproof and will not fall off when used in an aquatic environment; the coating is applied to coat the molybdenum disulfide on a suitable substrate for large-scale, low-cost green applications.
基于同一发明构思，本申请实施例还提供了一种上述的光热涂料或所述的制备方法制备得到的光热涂料作为光热材料的应用。Based on the same inventive concept, an embodiment of the present application also provides an application of the above-mentioned photothermal coating or the photothermal coating prepared by the preparation method as a photothermal material.
具体的，将光热涂料涂覆在聚氨酯海绵上，制成光热器件，用于盐水的蒸发。Specifically, the photothermal coating is coated on a polyurethane sponge to make a photothermal device for evaporating salt water.
以下进一步以具体实施例说明本申请的功能化二硫化钼及其制备方法、光热涂料及其应用。本部分结合具体实施例进一步说明本发明内容，但不应理解为对本发明的限制。如未特别说明，实施例中所采用的技术手段为本领域技术人员所熟知的常规手段。除非特别说明，本发明采用的试剂、方法和设备为本领域常规试剂、方法和设备。The functionalized molybdenum disulfide and its preparation method, photothermal coating and its application of the present application are further described below with specific examples. This section further illustrates the content of the present invention in conjunction with specific examples, but should not be construed as limiting the present invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.
实施例1Example 1
本申请实施例提供了一种功能化二硫化钼的制备方法，包括以下步骤：The present invention provides a method for preparing functionalized molybdenum disulfide, comprising the following steps:
S1、将0.1g二硫化钼纳米片和10mL巯基乙酸混合后，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得羧基功能化二硫化钼(COOH-MoS2)。S1. 0.1 g of molybdenum disulfide nanosheets and 10 mL of thioglycolic acid were mixed, ultrasonically treated for 2 h, and then magnetically stirred for 24 h, filtered, washed, and dried to obtain carboxyl-functionalized molybdenum disulfide (COOH-MoS 2 ).
实施例2Example 2
本申请实施例提供了一种功能化二硫化钼的制备方法，包括以下步骤：The present invention provides a method for preparing functionalized molybdenum disulfide, comprising the following steps:
S1、将0.8mL巯基乙酸溶于100mL水中，再加入0.1g二硫化钼纳米片，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得羟基功能化二硫化钼(OH-MoS2)。S1. Dissolve 0.8 mL of thioglycolic acid in 100 mL of water, add 0.1 g of molybdenum disulfide nanosheets, perform ultrasonic treatment for 2 h, and then magnetically stir for 24 h, filter, wash, and dry to obtain hydroxyl-functionalized molybdenum disulfide (OH-MoS 2 ).
实施例3Example 3
本申请实施例提供了一种功能化二硫化钼的制备方法，包括以下步骤：The present invention provides a method for preparing functionalized molybdenum disulfide, comprising the following steps:
S1、向5mL水中加入0.2g巯基乙胺，再加入0.1g二硫化钼纳米片，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得氨基功能化二硫化钼(NH2-MoS2)。S1. Add 0.2 g of mercaptoethylamine to 5 mL of water, then add 0.1 g of molybdenum disulfide nanosheets, ultrasonically treat for 2 h, then magnetically stir for 24 h, filter, wash and dry to obtain amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ).
实施例4Example 4
本申请实施例提供了一种光热涂料，包括以下原料：1g羧基功能化二硫化钼(COOH-MoS2)、异丙醇25mL、去离子水25mL、十二烷基苯磺酸钠0.02g、水性聚氨酯乳液(麦克林W909579水性聚氨酯)15mL、50mL的0.2g/L羟乙基纤维素水溶液；The embodiment of the present application provides a photothermal coating, comprising the following raw materials: 1 g of carboxyl functionalized molybdenum disulfide (COOH-MoS 2 ), 25 mL of isopropanol, 25 mL of deionized water, 0.02 g of sodium dodecylbenzene sulfonate, 15 mL of waterborne polyurethane emulsion (McLean W909579 waterborne polyurethane), and 50 mL of 0.2 g/L hydroxyethyl cellulose aqueous solution;
其中，羧基功能化二硫化钼的制备方法为：将1g二硫化钼纳米片和100mL巯基乙酸混合后，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得羧基功能化二硫化钼(COOH-MoS2)；The preparation method of carboxyl functionalized molybdenum disulfide is as follows: 1 g of molybdenum disulfide nanosheets and 100 mL of thioglycolic acid are mixed, ultrasonically treated for 2 h, and then magnetically stirred for 24 h, filtered, washed, and dried to obtain carboxyl functionalized molybdenum disulfide (COOH-MoS 2 );
上述光热涂料的制备方法为：将羧基功能化二硫化钼(COOH-MoS2)与异丙醇、去离子水混合后，再加入十二烷基苯磺酸钠、水性聚氨酯乳液、羟乙基纤维素水溶液混合后搅拌即得光热涂料。The preparation method of the above-mentioned photothermal coating is: after mixing carboxyl functionalized molybdenum disulfide (COOH-MoS 2 ) with isopropyl alcohol and deionized water, sodium dodecylbenzene sulfonate, aqueous polyurethane emulsion and hydroxyethyl cellulose aqueous solution are added, the mixture is mixed and stirred to obtain the photothermal coating.
实施例5Example 5
本申请实施例提供了一种光热涂料，包括以下原料：1g羟基功能化二硫化钼(OH-MoS2)、异丙醇25mL、去离子水25mL、十二烷基苯磺酸钠0.02g、水性聚氨酯乳液15mL、50mL的0.2g/L羧甲基纤维素水溶液；The present application embodiment provides a photothermal coating, comprising the following raw materials: 1 g of hydroxyl-functionalized molybdenum disulfide (OH-MoS 2 ), 25 mL of isopropanol, 25 mL of deionized water, 0.02 g of sodium dodecylbenzene sulfonate, 15 mL of waterborne polyurethane emulsion, and 50 mL of 0.2 g/L carboxymethyl cellulose aqueous solution;
其中，羟基功能化二硫化钼的制备方法为：将8mL巯基乙酸溶于1000mL水中，再加入1g二硫化钼纳米片，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得羟基功能化二硫化钼(OH-MoS2)；The preparation method of hydroxyl-functionalized molybdenum disulfide is as follows: 8 mL of thioglycolic acid is dissolved in 1000 mL of water, 1 g of molybdenum disulfide nanosheets is added, ultrasonic treatment is performed for 2 h, magnetic stirring is performed for 24 h, filtration is performed, washing is performed, and drying is performed to obtain hydroxyl-functionalized molybdenum disulfide (OH-MoS 2 );
上述光热涂料的制备方法为：将羟基功能化二硫化钼(OH-MoS2)与异丙醇、去离子水混合后，再加入十二烷基苯磺酸钠、水性聚氨酯乳液、羧甲基纤维素水溶液混合后搅拌即得光热涂料。The preparation method of the above-mentioned photothermal coating is: after mixing hydroxyl functionalized molybdenum disulfide (OH-MoS 2 ) with isopropyl alcohol and deionized water, sodium dodecylbenzene sulfonate, aqueous polyurethane emulsion and carboxymethyl cellulose aqueous solution are added, mixed and stirred to obtain the photothermal coating.
实施例6Example 6
本申请实施例提供了一种光热涂料，包括以下原料：1g氨基功能化二硫化钼(NH2-MoS2)、异丙醇25mL、去离子水25mL、十二烷基苯磺酸钠0.02g、水性聚氨酯乳液15mL、50mL的0.2g/L羧甲基纤维素水溶液；The present application embodiment provides a photothermal coating, comprising the following raw materials: 1 g of amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ), 25 mL of isopropanol, 25 mL of deionized water, 0.02 g of sodium dodecylbenzene sulfonate, 15 mL of waterborne polyurethane emulsion, and 50 mL of 0.2 g/L carboxymethyl cellulose aqueous solution;
其中，氨基功能化二硫化钼(NH2-MoS2)的制备方法为：向50mL水中加入2g巯基乙胺，再加入1g二硫化钼纳米片，超声处理2h，然后磁力搅拌24h，过滤，洗涤后干燥，即得氨基功能化二硫化钼(NH2-MoS2)；The preparation method of amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ) is as follows: add 2 g of mercaptoethylamine to 50 mL of water, then add 1 g of molybdenum disulfide nanosheets, perform ultrasonic treatment for 2 h, then magnetically stir for 24 h, filter, wash and dry to obtain amino-functionalized molybdenum disulfide (NH 2 -MoS 2 );
上述光热涂料的制备方法为：将氨基功能化二硫化钼(NH2-MoS2)与异丙醇、去离子水混合后，再加入十二烷基苯磺酸钠、水性聚氨酯乳液、羧甲基纤维素水溶液混合后搅拌即得光热涂料。The preparation method of the above-mentioned photothermal coating is: after mixing amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ) with isopropyl alcohol and deionized water, sodium dodecylbenzene sulfonate, aqueous polyurethane emulsion and carboxymethyl cellulose aqueous solution are added, mixed and stirred to obtain the photothermal coating.
对比例1Comparative Example 1
本申请实施例提供了一种光热涂料，包括以下原料：1g二硫化钼纳米片、异丙醇25mL、去离子水25mL、十二烷基苯磺酸钠0.02g、水性聚氨酯乳液15mL、50mL的0.2g/L羧甲基纤维素水溶液；The embodiment of the present application provides a photothermal coating, including the following raw materials: 1 g of molybdenum disulfide nanosheets, 25 mL of isopropanol, 25 mL of deionized water, 0.02 g of sodium dodecylbenzene sulfonate, 15 mL of aqueous polyurethane emulsion, and 50 mL of 0.2 g/L carboxymethyl cellulose aqueous solution;
上述光热涂料的制备方法为：将二硫化钼与异丙醇、去离子水混合后，再加入十二烷基苯磺酸钠、水性聚氨酯乳液、羧甲基纤维素水溶液混合后搅拌即得光热涂料。The preparation method of the above-mentioned photothermal coating is: after mixing molybdenum disulfide with isopropyl alcohol and deionized water, sodium dodecylbenzene sulfonate, aqueous polyurethane emulsion and carboxymethyl cellulose aqueous solution are added, the mixture is mixed and stirred to obtain the photothermal coating.
性能测试Performance Testing
实施例1～3中制备得到的羧基功能化二硫化钼(COOH-MoS2)、羟基功能化二硫化钼(OH-MoS2)、氨基功能化二硫化钼(NH2-MoS2)以及二硫化钼纳米片的红外光谱如图1所示。图1中a为未经过任何处理的二硫化钼纳米片、b为氨基功能化二硫化钼(NH2-MoS2)、c为羟基功能化二硫化钼(OH-MoS2)、d为羧基功能化二硫化钼(COOH-MoS2)。The infrared spectra of the carboxyl-functionalized molybdenum disulfide (COOH-MoS 2 ), hydroxyl-functionalized molybdenum disulfide (OH-MoS 2 ), amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ) and molybdenum disulfide nanosheets prepared in Examples 1 to 3 are shown in Figure 1 . In Figure 1 , a is the untreated molybdenum disulfide nanosheet, b is the amino-functionalized molybdenum disulfide (NH 2 -MoS 2 ), c is the hydroxyl-functionalized molybdenum disulfide (OH-MoS 2 ), and d is the carboxyl-functionalized molybdenum disulfide (COOH-MoS 2 ).
从图1中可以看出，改性后二硫化钼表面含有相应的官能团。As can be seen from Figure 1, the surface of the modified MoS2 contains corresponding functional groups.
将实施例4～6、以及对比例1中所得到的光热涂料涂覆在直径4cm，厚度2cm的聚氨酯海绵上，涂覆厚度控制在1cm制成四种光热蒸发器；其中，对比例1中光热涂料(加入未改性二硫化钼纳米片)制成的蒸发器记为MPPU，实施例4中光热涂料(加入羧基功能化二硫化钼)制成的蒸发器记为CMPPU，实施例5中光热涂料(加入羟基功能化二硫化钼)制成的蒸发器记为OMPPU，实施例6中光热涂料(加入氨基功能化二硫化钼)制成的蒸发器记为NMPPU。The photothermal coatings obtained in Examples 4 to 6 and Comparative Example 1 were coated on a polyurethane sponge with a diameter of 4 cm and a thickness of 2 cm, and the coating thickness was controlled at 1 cm to make four types of photothermal evaporators; among them, the evaporator made of the photothermal coating (adding unmodified molybdenum disulfide nanosheets) in Comparative Example 1 was recorded as MPPU, the evaporator made of the photothermal coating (adding carboxyl-functionalized molybdenum disulfide) in Example 4 was recorded as CMPPU, the evaporator made of the photothermal coating (adding hydroxyl-functionalized molybdenum disulfide) in Example 5 was recorded as OMPPU, and the evaporator made of the photothermal coating (adding amino-functionalized molybdenum disulfide) in Example 6 was recorded as NMPPU.
图2为实施例4中光热涂料制成的蒸发器的实物图。FIG. 2 is a physical picture of the evaporator made of photothermal coating in Example 4.
将上述制备得到的不同蒸发器置于盐水并使用1KW m-2光强下照射，同时，以不加入蒸发器(即图中无蒸发器)的盐水在1KW m-2光强下照射作为对比，以不涂覆光热涂料的聚氨酯海绵置于盐水并使用1KW m-2光强下照射作为对比；测试不同蒸发器的光热蒸发效果，结果如图3～5所示。The different evaporators prepared as above were placed in salt water and irradiated under a light intensity of 1 KW m - 2 . At the same time, salt water without an evaporator (i.e., no evaporator in the figure) was irradiated under a light intensity of 1 KW m-2 as a comparison. A polyurethane sponge not coated with photothermal coating was placed in salt water and irradiated under a light intensity of 1 KW m -2 as a comparison. The photothermal evaporation effects of different evaporators were tested, and the results are shown in Figures 3 to 5.
图3为盐水随时间质量变化，从图3中可以看出，盐水随时间质量变化初始是变化平缓，随着持续照射水量变化呈线性变化，四种负载二硫化钼的蒸发器质量变化显著增加，另外功能化的二硫化钼蒸发器水量变化更大，这可能是由于改性后的二硫化钼亲水性变好进而有益于光热蒸发，此外功能化使二硫化钼负载更为紧密。Figure 3 shows the change in mass of brine over time. It can be seen from Figure 3 that the change in mass of brine over time is initially gentle, and the water volume changes linearly with continuous irradiation. The mass changes of the four evaporators loaded with molybdenum disulfide increase significantly. In addition, the water volume change of the functionalized molybdenum disulfide evaporator is greater. This may be because the modified molybdenum disulfide has better hydrophilicity and is beneficial to photothermal evaporation. In addition, functionalization makes the molybdenum disulfide loading more compact.
图4为在1KW m-2光强下几种蒸发器的蒸发速率和相应的蒸发效率，聚氨酯海绵蒸发器(PPU)的蒸发速率为0.4697kg m-2h-1，在负载二硫化钼后(MPPU)增加到0.9395kg m-2h-1，三种功能化二硫化钼蒸发器的蒸发速率分别为(CMPPU)1.0111kg m-2h-1、(OMPPU)1.1226kg m-2h-1、(NMPPU)1.0987kg m-2h-1。相较于二硫化钼蒸发器(MPPU)67.3％的蒸发效率，功能化二硫化钼蒸发器有更好的蒸发效率。Figure 4 shows the evaporation rate and corresponding evaporation efficiency of several evaporators under a light intensity of 1KW m -2 . The evaporation rate of the polyurethane sponge evaporator (PPU) is 0.4697kg m -2 h -1 , which increases to 0.9395kg m -2 h -1 after loading molybdenum disulfide (MPPU). The evaporation rates of the three functionalized molybdenum disulfide evaporators are (CMPPU) 1.0111kg m -2 h -1 , (OMPPU) 1.1226kg m -2 h -1 , and (NMPPU) 1.0987kg m -2 h -1 . Compared with the evaporation efficiency of 67.3% of the molybdenum disulfide evaporator (MPPU), the functionalized molybdenum disulfide evaporator has a better evaporation efficiency.
图5为四种不同蒸发器在在1KW m-2光照1h表面温度变化，海绵负载二硫化钼后表面温度显著增加，改性后的二硫化钼蒸发器的表面温度更高，其中功能化二硫化钼蒸发器表面温度最高达到49.1℃，这是由于聚氨酯海绵负载了更多二硫化钼从而有更好的吸热保温效果。Figure 5 shows the surface temperature changes of four different evaporators under 1 kW m -2 light for 1 hour. The surface temperature increases significantly after the sponge is loaded with molybdenum disulfide. The surface temperature of the modified molybdenum disulfide evaporator is even higher. The surface temperature of the functionalized molybdenum disulfide evaporator reaches a maximum of 49.1°C. This is because the polyurethane sponge is loaded with more molybdenum disulfide and has a better heat absorption and insulation effect.
上所述仅为本发明的较佳实施方式而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
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