CN109517217B - Tungsten-doped vanadium dioxide/graphene composite and preparation method and application thereof - Google Patents
Tungsten-doped vanadium dioxide/graphene composite and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a tungsten-doped vanadium dioxide/graphene composite and a preparation method and application thereof. The method comprises the following steps: weighing a proper amount of graphene oxide powder, vanadium pentoxide, organic acid and ammonium tungstate, adding the graphene oxide powder, the vanadium pentoxide, the organic acid and the ammonium tungstate into solvent deionized water, and uniformly mixing to obtain a precursor solution; and calcining the precursor solution after hydrothermal reaction, cooling, washing, centrifugal washing and drying to obtain the tungsten-doped vanadium dioxide/graphene composite. The tungsten-doped vanadium dioxide/graphene composite prepared by the invention has good dispersibility and crystallinity, and can improve the antifouling property and the heat-insulating property when being applied to novel phase-change intelligent temperature control materials and energy-saving materials.
Description
Technical Field
The invention relates to the technical field of graphene composite materials, in particular to a tungsten-doped vanadium dioxide/graphene composite and a preparation method and application thereof.
Background
In recent years, energy conservation and emission reduction become the primary tasks of all countries. And the building energy consumption accounts for over 1/3 of the total social energy consumption. Therefore, energy conservation and emission reduction of the building are effective means for solving the problem of high energy consumption of the building and are also the key for reducing energy consumption. By developing the energy-saving glass, the greenhouse gas emission and the energy consumption are expected to be greatly reduced, and the aims of energy conservation and environmental protection are finally achieved.
At present, building glass is coated with a coating taking heat-insulating energy-saving powder as a main body, so that the production requirement of factory building energy saving can be met, and energy-saving reconstruction of the existing common glass can also be realized. The infrared is the main source of the external environment heat source, but the existing heat-insulating energy-saving powder has not ideal absorption or reflection effect on the infrared. Therefore, improvements are needed.
The conductive network formed by the vanadium dioxide particles and the graphene can theoretically realize total reflection of infrared light instead of conventional diffuse reflection, and can greatly reduce absorption and transmission of the infrared light, so that temperature rise is reduced, and the purpose of energy conservation is realized. Meanwhile, the graphene has higher conductivity, can lead out electrons in time, can inhibit the recombination of photo-generated electrons and holes after reaction, and improves the photocatalytic reaction efficiency, so that the antifouling performance of the coating can be improved. Moreover, the research on the vanadium dioxide/graphene composite powder for the transparent heat-insulating glass nano-coating is rarely reported, so that the research on the vanadium dioxide/graphene composite powder for the transparent heat-insulating glass nano-coating has important significance.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a tungsten-doped vanadium dioxide/graphene composite, a preparation method and an application thereof, and aims to provide a tungsten-doped vanadium dioxide/graphene composite for a transparent heat-insulating glass nano-coating.
The technical scheme of the invention is as follows:
a preparation method of a tungsten-doped vanadium dioxide/graphene composite comprises the following steps:
(1) adding graphene oxide powder into deionized water, and performing ultrasonic dispersion;
(2) adding vanadium pentoxide, organic acid and ammonium tungstate into the system obtained in the step (1), and stirring to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a reaction kettle for hydrothermal reaction;
(4) and (4) sequentially cooling, washing, centrifugally separating and drying the mixed solution obtained after the reaction in the step (3), and calcining to obtain the tungsten-doped vanadium dioxide/graphene composite.
The preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the step (1), wherein the graphene oxide is a two-dimensional graphene oxide nanosheet.
The preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the following steps of (1) ultrasonically dispersing graphene oxide powder: ultrasonic treatment is carried out at 28-59kHz and 500W power for 5-60 min.
The preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the following steps of (1) in step (2), wherein the mass ratio of vanadium pentoxide to ammonium tungstate is 100: 1-20: 1.
the preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the step (2), wherein the organic acid is one of citric acid and oxalic acid, and the mass ratio of vanadium pentoxide to citric acid is 1: 3, and the mass ratio of oxalic acid to oxalic acid is 1: 2.
the preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the step (3), wherein in the step (3), the hydrothermal temperature of the hydrothermal reaction is 180-200 ℃, and the hydrothermal time is 24-72 h.
The preparation method of the tungsten-doped vanadium dioxide/graphene composite comprises the step (4), wherein the calcining temperature is 550-650 ℃, and the calcining time is 1.5-2.5 h.
The invention relates to a tungsten-doped vanadium dioxide/graphene composite, which is prepared by the preparation method of the tungsten-doped vanadium dioxide/graphene composite.
The invention relates to application of a tungsten-doped vanadium dioxide/graphene composite in a heat-insulating coating or a heat-insulating film.
Has the advantages that: the tungsten-doped vanadium dioxide/graphene composite prepared by the invention has good dispersibility and crystallinity, and can improve the antifouling property and the heat-insulating property when being applied to novel phase-change intelligent temperature control materials and energy-saving materials.
Drawings
Fig. 1 is an XRD spectrum of a tungsten-doped vanadium dioxide/graphene composite according to a first embodiment of the present invention.
Fig. 2 is an EDS spectrum of a tungsten-doped vanadium dioxide/graphene composite according to an embodiment of the present invention.
Fig. 3 is a SEM field emission scanning electron microscope topography of the tungsten-doped vanadium dioxide/graphene composite according to the first embodiment of the present invention.
Fig. 4 is another SEM field emission scanning electron microscope topography of the tungsten-doped vanadium dioxide/graphene composite according to the first embodiment of the present invention.
Fig. 5 is a raman spectrum of the tungsten-doped vanadium dioxide/graphene composite according to the first embodiment of the present invention.
FIG. 6 shows a V according to a second embodiment of the present invention0.99W0.01O2DSC detection of/graphene complexes.
FIG. 7 shows a V according to a third embodiment of the present invention0.99W0.01O2DSC of powder was examined.
Detailed Description
The invention provides a tungsten-doped vanadium dioxide/graphene composite and a preparation method and application thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and more clear. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a preparation method of a tungsten-doped vanadium dioxide/graphene composite, which comprises the following steps:
(1) adding graphene oxide powder into deionized water, and performing ultrasonic dispersion;
(2) adding vanadium pentoxide, organic acid and ammonium tungstate into the system obtained in the step (1), and stirring to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a reaction kettle for hydrothermal reaction;
(4) and (4) sequentially cooling, washing, centrifugally separating and drying the mixed solution obtained after the reaction in the step (3), and calcining to obtain the tungsten-doped vanadium dioxide/graphene composite.
The crystal form of vanadium dioxide in the product obtained after the hydrothermal reaction is B type, and the crystal form of vanadium dioxide in the product obtained after the calcination treatment is M type. The tungsten-doped vanadium dioxide/graphene composite prepared by the invention has good dispersibility and crystallinity, and can improve the antifouling property and the heat-insulating property when being applied to novel phase-change intelligent temperature control materials and energy-saving materials.
In step (1), in a preferred embodiment, the graphene oxide is a two-dimensional graphene oxide nanosheet. Because the graphene nano-sheets can enable the nano-particles to be better compounded on the surfaces and the layers of the curled and wrinkled nano-sheets.
In the step (1), the graphene oxide powder is ultrasonically dispersed according to the following steps: ultrasonic treatment is carried out at 28-59kHz and 500W power for 5-60 min.
In step (2), in a preferred embodiment, the mass ratio of vanadium pentoxide to ammonium tungstate is 100: 1-20: 1.
In step (2), in a preferred embodiment, the organic acid is one of citric acid and oxalic acid, wherein the mass ratio of vanadium pentoxide to citric acid is 1: 3, and the mass ratio of oxalic acid to oxalic acid is 1: 2.
in step (3), in a preferred embodiment, the hydrothermal temperature of the hydrothermal reaction is 180-. The vanadium dioxide crystal prepared in the temperature range is better.
In step (3), in a preferred embodiment, the hydrothermal time of the hydrothermal reaction is 24-72 h. The reaction is fully carried out in the hydrothermal time interval, and the prepared vanadium dioxide has a good crystal form.
The step (4) specifically comprises the following steps:
(41) cooling the mixed solution obtained after the reaction in the step (3) to normal temperature to obtain a solid-liquid mixture;
(42) washing the obtained solid-liquid mixture with deionized water and absolute ethyl alcohol for 3-5 times respectively;
(43) carrying out centrifugal separation on the solid-liquid mixture obtained after washing to remove water; wherein the rotating speed of centrifugal separation is 3000-5000 r/min, and the time is 10-30 minutes;
(44) placing the separated reaction product in a drying oven, and drying for 4-8 hours at the temperature of 60-80 ℃ to obtain composite nano powder;
(45) and (5) putting the composite nano powder obtained in the step (44) into a tubular furnace for calcining to obtain the tungsten-doped vanadium dioxide/graphene composite.
In step (4), in a preferred embodiment, the calcination temperature is 550 ℃ to 650 ℃.
In step (4), in a preferred embodiment, the calcination time is 1.5h to 2.5 h.
The embodiment of the invention also provides a tungsten-doped vanadium dioxide/graphene composite, wherein the tungsten-doped vanadium dioxide/graphene composite is prepared by the preparation method.
The embodiment of the invention also provides application of the tungsten-doped vanadium dioxide/graphene composite in a heat-insulating coating or a heat-insulating film.
The invention is further illustrated by the following specific examples.
Example one
(1) Weighing 20mg of graphene oxide powder, adding 35ml of deionized water, and performing ultrasonic dispersion for 30min;
(2) then according to V0.99W0.01O2Weighing 0.609g of vanadium pentoxide, 1.101g of citric acid and 0.013g of ammonium tungstate according to the component proportion, adding into the system obtained in the step (1), and stirring at normal temperature for 10min to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a high-pressure reaction kettle, and reacting for 24 hours at 200 ℃;
(4) cooling the mixed solution reacted in the step (3) to normal temperature, and washing the obtained solid-liquid mixture with deionized water and absolute ethyl alcohol for 3 times respectively;
(5) carrying out centrifugal separation on the solid-liquid mixture obtained in the step (4) to remove moisture to obtain a tungsten-doped vanadium dioxide/graphene composite, wherein the rotating speed of the centrifugal separation is 5000 r/min, and the time is 10 minutes;
(6) placing the reaction product separated in the step (5) in a drying oven, and drying for 4 hours at 80 ℃ to obtain composite nano powder;
(7) and (4) putting the composite nano powder obtained in the step (6) into a tubular furnace, and calcining for 2 hours at 600 ℃ to obtain the tungsten-doped vanadium dioxide/graphene composite.
And (3) testing results:
fig. 1 is an XRD spectrum of the tungsten doped vanadium dioxide/graphene composite obtained in the embodiment of the present invention. The figure shows that the characteristic peak of the product is sharp and prominent, the crystal form is better, and no other impurity peak exists, which indicates that the doping of tungsten does not influence the crystal form structure of vanadium dioxide, and the product accords with the vanadium dioxide standard card.
Fig. 2 is an EDS spectrum of the tungsten-doped vanadium dioxide/graphene composite obtained in the embodiment of the present invention. The figure shows that the tungsten element is successfully doped into the composite.
Fig. 3-4 are SEM field emission scanning electron microscope morphology images of the tungsten-doped vanadium dioxide/graphene composite obtained in the embodiments of the present invention. As can be seen from fig. 3, the nanoparticles are uniformly distributed on the surface of the graphene nanosheet. Fig. 4 shows that the nanoparticles are uniformly dispersed and tightly fixed between the curled and wrinkled graphene nanosheet layers.
Fig. 5 is a raman spectrum of the tungsten-doped vanadium dioxide/graphene composite obtained in the embodiment of the present invention. The figure shows that the nanoparticles and graphene are successfully compounded.
Example two
(1) Weighing 20mg of graphene oxide powder, adding 35ml of deionized water, and performing ultrasonic dispersion for 30min;
(2) then according to V0.99W0.01O2Weighing 0.609g of vanadium pentoxide, 0.973g of oxalic acid and 0.013g of ammonium tungstate according to the component proportion, adding the materials into the system obtained in the step (1), and stirring at normal temperature for 10min to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a high-pressure reaction kettle, and reacting for 24 hours at 200 ℃;
(4) cooling the mixed solution obtained in the step (3) to normal temperature, and washing the obtained solid-liquid mixture with deionized water and absolute ethyl alcohol for 3 times respectively;
(5) carrying out centrifugal separation on the solid-liquid mixture obtained in the step (4) to remove moisture to obtain a tungsten-doped vanadium dioxide/graphene composite, wherein the rotating speed of the centrifugal separation is 5000 r/min, and the time is 10 minutes;
(6) placing the reaction product separated in the step (5) in a drying oven, and drying for 4 hours at 80 ℃ to obtain composite nano powder;
(7) and (4) putting the composite nano powder obtained in the step (6) into a tubular furnace, and calcining for 2 hours at 600 ℃ to obtain the tungsten-doped vanadium dioxide/graphene composite.
And (3) testing results:
FIG. 6 is a V of an embodiment of the present invention0.99W0.01O2DSC detection of/graphene complexes. The phase transition temperature of the composite is 59.6 ℃, which is reduced by 2.2 ℃ compared with the phase transition temperature of the composite without graphene in the graph of fig. 7.
EXAMPLE III
(1) According to V0.99W0.01O2Weighing 0.609g of vanadium pentoxide, 0.973g of oxalic acid and 0.013g of ammonium tungstate according to the component proportion, and stirring at normal temperature for 10min to obtain a precursor solution;
(2) transferring the precursor solution obtained in the step (1) to a high-pressure reaction kettle, and reacting for 24 hours at 200 ℃;
(3) cooling the mixed solution obtained in the step (2) to normal temperature, and washing the obtained solid-liquid mixture with deionized water and absolute ethyl alcohol for 3 times respectively;
(4) carrying out centrifugal separation on the solid-liquid mixture obtained in the step (3) to remove moisture to obtain a tungsten-doped vanadium dioxide/graphene composite, wherein the rotating speed of the centrifugal separation is 5000 r/min, and the time is 10 minutes;
(5) placing the reaction product separated in the step (5) in a drying oven, and drying for 4 hours at 80 ℃ to obtain nano powder;
(6) and (4) putting the nano powder obtained in the step (6) into a tubular furnace, and calcining for 2 hours at 600 ℃ to obtain tungsten-doped vanadium dioxide powder.
And (3) testing results:
FIG. 7 is a V of an embodiment of the present invention0.99W0.01O2DSC of powder was examined. As a reversible phase change material, the phase change temperature of vanadium dioxide is about 68 ℃, and the graph shows that when the molar ratio of the tungsten doped vanadium dioxide is 1%, the phase change temperature is 61.8 ℃, which is 6.2 ℃ lower than that of pure vanadium dioxide.
Example four
(1) Weighing 20mg of graphene oxide powder, adding 35ml of deionized water, and performing ultrasonic dispersion for 30min;
(2) then according to V0.98W0.02O2Weighing 0.609g of vanadium pentoxide, 0.973g of citric acid and 0.037g of ammonium tungstate according to the component proportion, adding the materials into the system obtained in the step (1), and stirring at normal temperature for 10min to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a high-pressure reaction kettle, and reacting for 24 hours at 200 ℃;
(4) cooling the mixed solution obtained in the step (3) to normal temperature, and washing the obtained solid-liquid mixture with deionized water and absolute ethyl alcohol for 3 times respectively;
(5) carrying out centrifugal separation on the solid-liquid mixture obtained in the step (4) to remove moisture to obtain a tungsten-doped vanadium dioxide/graphene composite, wherein the rotating speed of the centrifugal separation is 5000 r/min, and the time is 10 minutes;
(6) placing the reaction product separated in the step (5) in a drying oven, and drying for 4 hours at 80 ℃ to obtain composite nano powder;
(7) and (4) putting the composite nano powder obtained in the step (6) into a tubular furnace, and calcining for 2 hours at 600 ℃ to obtain the tungsten-doped vanadium dioxide/graphene composite.
In summary, the tungsten-doped vanadium dioxide/graphene composite and the preparation method and application thereof provided by the invention have the advantages that the prepared tungsten-doped vanadium dioxide/graphene composite has good dispersibility and crystallinity, the antifouling property and the heat insulation property can be improved when the composite is applied to novel phase-change intelligent temperature control materials and energy-saving materials, the preparation process is simple, the efficiency is high, the energy consumption is low, and the large-scale production can be realized.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (3)
1. A preparation method of a tungsten-doped vanadium dioxide/graphene composite is characterized by comprising the following steps:
(1) adding graphene oxide powder into deionized water, and performing ultrasonic dispersion;
(2) adding vanadium pentoxide, organic acid and ammonium tungstate into the system obtained in the step (1), and stirring to obtain a precursor solution;
(3) transferring the precursor solution obtained in the step (2) to a reaction kettle for hydrothermal reaction;
(4) sequentially cooling, washing, centrifugally separating and drying the mixed solution obtained after the reaction in the step (3), and calcining to obtain a tungsten-doped vanadium dioxide/graphene composite;
the organic acid is one of citric acid and oxalic acid, wherein the mass ratio of vanadium pentoxide to citric acid is 1: 3, and the mass ratio of oxalic acid to oxalic acid is 1: 2;
the calcining temperature is 550-650 ℃, and the calcining time is 1.5-2.5 h; in the step (1), the graphene oxide powder is ultrasonically dispersed according to the following steps: ultrasonic treatment with 28-59kHz frequency and 500W power for 5-60 min; in the step (2), the mass ratio of the vanadium pentoxide to the ammonium tungstate is 100: 1-20: 1; in the step (1), the graphene oxide is a two-dimensional graphene oxide nanosheet; in the step (3), the hydrothermal temperature of the hydrothermal reaction is 180-;
in the tungsten-doped vanadium dioxide/graphene composite, the tungsten-doped vanadium dioxide is compounded on the surface of the graphene nanosheet and between the graphene nanosheets.
2. The tungsten-doped vanadium dioxide/graphene composite is characterized by being prepared by the preparation method of the tungsten-doped vanadium dioxide/graphene composite according to claim 1.
3. Use of the tungsten doped vanadium dioxide/graphene composite according to claim 2 in a thermal barrier coating or a thermal barrier film.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101164900A (en) * | 2007-10-09 | 2008-04-23 | 上海师范大学 | Technique for preparing phase-change temperature controllable tungsten doping nano vanadium dioxide powder |
| CN101265374A (en) * | 2008-01-24 | 2008-09-17 | 复旦大学 | Intelligent heat-insulating film and its preparing process |
| CN101481142A (en) * | 2009-02-18 | 2009-07-15 | 大连理工大学 | Method for preparing hypovanadic oxide doped powder material |
| CN102295312A (en) * | 2010-06-22 | 2011-12-28 | 中国科学院合肥物质科学研究院 | Tungsten-doped vanadium dioxide nanopowder and preparation method for the same |
| KR101387138B1 (en) * | 2012-10-19 | 2014-04-21 | 한국세라믹기술원 | Process for preparing composite of tungsten doped vanadium dioxide deposited on hollow silica |
| CN107406756A (en) * | 2015-03-31 | 2017-11-28 | 柯尼卡美能达株式会社 | The manufacture method of particle containing vanadium dioxide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071843A (en) * | 2013-03-30 | 2014-10-01 | 中国科学院合肥物质科学研究院 | Preparation method of monodispersed M-phase vanadium dioxide nanoparticles |
-
2018
- 2018-11-22 CN CN201811400252.8A patent/CN109517217B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101164900A (en) * | 2007-10-09 | 2008-04-23 | 上海师范大学 | Technique for preparing phase-change temperature controllable tungsten doping nano vanadium dioxide powder |
| CN101265374A (en) * | 2008-01-24 | 2008-09-17 | 复旦大学 | Intelligent heat-insulating film and its preparing process |
| CN101481142A (en) * | 2009-02-18 | 2009-07-15 | 大连理工大学 | Method for preparing hypovanadic oxide doped powder material |
| CN102295312A (en) * | 2010-06-22 | 2011-12-28 | 中国科学院合肥物质科学研究院 | Tungsten-doped vanadium dioxide nanopowder and preparation method for the same |
| KR101387138B1 (en) * | 2012-10-19 | 2014-04-21 | 한국세라믹기술원 | Process for preparing composite of tungsten doped vanadium dioxide deposited on hollow silica |
| CN107406756A (en) * | 2015-03-31 | 2017-11-28 | 柯尼卡美能达株式会社 | The manufacture method of particle containing vanadium dioxide |
Non-Patent Citations (2)
| Title |
|---|
| Synthesis of VO2 Nanomaterials Using Green Solvents for Thermochromic Window Coatings;Hanna Qin;《Scholarship@Western》;20171213;第23，27，41，47,48,50-54，63，70，106-107页 * |
| Ｗ 掺杂二氧化钒的水热晶化机理及其相变性能;李 尧等;《材料工程》;20171130;第45卷(第11期);第58-65页 * |
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