CN109607650A - Nanogold/graphene wooden structures optical-thermal conversion material preparation method - Google Patents
Nanogold/graphene wooden structures optical-thermal conversion material preparation method Download PDFInfo
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- CN109607650A CN109607650A CN201811579900.0A CN201811579900A CN109607650A CN 109607650 A CN109607650 A CN 109607650A CN 201811579900 A CN201811579900 A CN 201811579900A CN 109607650 A CN109607650 A CN 109607650A
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
- B27K3/10—Apparatus
-
- 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
- C02F1/043—Details
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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
- Y02A20/20—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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses nanogold/graphene wooden structures optical-thermal conversion material preparation methods, comprising steps of step 1, graphene oxide add distilled water to be slowly diluted to 2~5mg/ml；Step 2 will carry out ultrasonic disperse in the obtained graphene oxide solution of a certain amount of gold chloride addition step 1, make concentration 0.02~0.1wt ‰ of the gold chloride in mixed solution；Step 3 will carry out ultrasonic disperse in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2, make triethylene tetramine 0.02~0.1wt% of concentration in the mixed solution that this step obtains；Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration；Step 4 is heated to 150~200 DEG C of 12~36h of progress hydro-thermal reaction to the substrate after infiltration；Step 5, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures optical-thermal conversion material.Material produced by the present invention has high photothermal conversion efficiency and mechanical strength higher, can promote moisture rapid evaporation, realizes large-scale production.
Description
Technical field
The present invention relates to a kind of preparation methods of optical-thermal conversion material, wooden more particularly to a kind of nanogold/graphene
The preparation method of structure optical-thermal conversion material.
Background technique
Efficient solar energy Conversion and Utilization are considered as the great demand of national energy.Wherein, optical and thermal (steam) conversion exists
The fields such as sea water desalination, fractionation, sterilizing, sewage treatment show splendid application prospect.However due to damage optically and thermally
Consumption, traditional optical and thermal (steam) transition material efficiency is lower (~40%), largely limits its extensive use.And have
Optical and thermal (steam) transfer efficiency can then be significantly increased using optothermal material for effect ground, and polymer, carbon material, heavy metal are received
A variety of optothermal materials such as rice material are applied to solar energy conversion all to improve optical and thermal (steam) transfer efficiency.
Current existing three-dimensional porous optothermal material mainly has heavy metal nanoparticle and carbon material etc..Such as it is received using aluminium
Rice corpuscles has the three-dimensional porous optothermal material of surface plasma body resonant vibration characteristic building, and this material has the absorption of wide-band
Spectrum (> 96%) can efficiently carry out optical and thermal (steam) conversion.Cheap, efficient using discarded polyurethane foam preparation,
Recyclable optical and thermal (steam) transition material.There is strong absorption, lower thermal conductivity, low specific heat based on graphene three-dimensional material
Etc. characteristics, prepare three-dimensional grapheme optothermal material.In addition to single material system, more composite materials are also used for optical and thermal and (steam
Vapour) conversion, such as cellulose/carbon nano, graphene oxide/carbon nanotube, porous carbon black/graphene oxide, these composite woods
Expect that the excellent characteristics of comprehensive multiple material simultaneously generates synergistic effect, has changed and improved the mechanical performance of material, hydrophily and thermally conductive
The performances such as property, further improve the overall performance of optical and thermal (steam) material.
Summary of the invention
In view of the above-mentioned defects in the prior art, the present invention provides a kind of nanogold/graphene wooden structures photothermal conversions
The preparation method of material further increases the photothermal conversion efficiency of material, improves moisture when being applied to water quality desalination, purification and steams
Send out speed.
Technical solution of the present invention is as follows, a kind of preparation method of nanogold/graphene wooden structures optical-thermal conversion material, packet
Include following steps: step 1, graphene oxide add distilled water to be slowly diluted to 2~5mg/ml；Step 2 adds a certain amount of gold chloride
Enter and carry out ultrasonic disperse in the graphene oxide solution that step 1 obtains, make concentration 0.02 of the gold chloride in mixed solution~
0.1wt‰；Step 3 will carry out ultrasonic disperse in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2, make three second
Alkene tetramine concentration in the mixed solution that this step obtains is 0.02~0.1wt%；Step 4, the solution that step 3 is obtained and wood
Matter substrate, which is put into vacuum bag, vacuumizes infiltration；Step 5 is heated to 150~200 DEG C of progress hydro-thermal reactions to the substrate after infiltration
12~36h；Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Further, keeping mixed solution temperature in the step 2 when ultrasonic disperse is 15~25 DEG C.
Further, keeping mixed solution temperature in the step 3 when ultrasonic disperse is 10~25 DEG C.
Further, the ultrasonic disperse time is 0.5~1.5h in the step 2 and step 3.
Further, when the step 3 vacuumizes infiltration, vacuum degree is maintained at 0.1~0.15Mpa and 0.5~1h of pressure maintaining.
Preferably, the graphene oxide is prepared using improved Hummers ' method.
Compared with prior art, beneficial effect is technical solution of the present invention:
1, of the invention since the surface plasma resonance effect and graphene for combining nanogold are to the strong absorbent of light
Nanogold/graphene wooden structures optical-thermal conversion material tool broader spectrum and efficient absorptivity, can more efficiently inhale
It receives sunlight and converts thereof into heat, water is rapidly heated, form water vapour；
2, nanogold/graphene wooden structures optical-thermal conversion material skeleton is with wooden for substrate, when the material is placed in
When the water surface, specific porous structure possessed by wooden or bamboo material has ensured that moisture quickly can be transmitted to material by the water surface
Surface has ensured the rapid evaporation of moisture.
3, trees or bamboo sheet can effectively reduce material as low Heat Conduction Material and radiate to ambient enviroment, can be effective
Raising photothermal conversion efficiency.
4, trees or bamboo are the splendid materials of mechanical strength, so nanogold of the present invention/graphene wooden structures photo-thermal
Transition material has splendid mechanical performance compared with existing graphene optothermal material.
5, simple hydro-thermal method can make processing controllability of the invention stronger, and it is large-scale raw to be more advantageous to realization
It produces.
Specific embodiment
Below with reference to embodiment, the invention will be further described, it should be understood that these embodiments be merely to illustrate the present invention and
It is not used in and limits the scope of the invention, after the present invention has been read, those skilled in the art are to various equal similar shapes of the invention
The modification of formula is fallen in the application range as defined in the appended claims.
The graphene oxide that embodiment is related to using improved Hummers ' method prepare, specifically, weigh 1g sodium nitrate and
The 50ml concentrated sulfuric acid places it in 2000ml three-necked flask, after sodium nitrate dissolution, reaction vessel is placed in ice bath and is slowly stirred
1h is mixed, 1g raw graphite is then added.Several times by 6g potassium permanganate, it is gradually added into container within about 1h hours or so, same to time control
Entire temperature of reaction system is made at 10 DEG C or less.It removes, is transferred in 35 DEG C of water-baths, after being slowly stirred 2h from ice bath later.
It is then slowly added to 100ml distilled water and 30ml hydrogen peroxide, when reaction system is warming up to 98 ± 2 DEG C, at such a temperature at a slow speed
30min is stirred, reaction solution gradually becomes glassy yellow.The distilled water centrifuge washing 10 times pH=7 to solution are used repeatedly, then will
After solution low-speed centrifugal, give up sediment, retain the GO solution of glassy yellow, it is spare to dry obtained graphene oxide.
Embodiment 1
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 2mg/ml by step 1；
Progress ultrasonic disperse 1.5h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1,
During ultrasonic disperse, mixed solution temperature is maintained at 15 DEG C, makes concentration 0.02wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
1.5h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 10 DEG C, and the mixing for obtaining triethylene tetramine in this step is molten
Concentration is 0.02wt% in liquid；
Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.12Mpa and pressure maintaining 1h；
Step 5 is heated to 150 DEG C of progress hydro-thermal reaction 36h to the substrate after infiltration；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Embodiment 2
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 5mg/ml by step 1；
Progress ultrasonic disperse 1h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1, surpasses
In sound dispersion process, mixed solution temperature is maintained at 25 DEG C, makes concentration 0.1wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
1h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 15 DEG C, the mixed solution for obtaining triethylene tetramine in this step
Middle concentration is 0.1wt%；
Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.1Mpa and pressure maintaining 0.5h；
Step 5 is heated to 200 DEG C of progress hydro-thermal reaction 12h to the substrate after infiltration；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Embodiment 3
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 3mg/ml by step 1；
Progress ultrasonic disperse 0.5h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1,
During ultrasonic disperse, mixed solution temperature is maintained at 20 DEG C, makes concentration 0.05wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
0.5h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 25 DEG C, and the mixing for obtaining triethylene tetramine in this step is molten
Concentration is 0.05wt% in liquid；
Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.15Mpa and pressure maintaining 0.5h；
Step 5 is heated to 180 DEG C of progress hydro-thermal reactions to the substrate after infiltration for 24 hours；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Embodiment 4
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 2mg/ml by step 1；
Progress ultrasonic disperse 0.5h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1,
During ultrasonic disperse, mixed solution temperature is maintained at 15 DEG C, makes concentration 0.04wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
0.5h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 25 DEG C, and the mixing for obtaining triethylene tetramine in this step is molten
Concentration is 0.02wt% in liquid；
Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.15Mpa and pressure maintaining 0.5h；
Step 5 is heated to 150 DEG C of progress hydro-thermal reaction 36h to the substrate after infiltration；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Embodiment 5
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 3.5mg/ml by step 1；
Progress ultrasonic disperse 1h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1, surpasses
In sound dispersion process, mixed solution temperature is maintained at 25 DEG C, makes concentration 0.08wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
1h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 10 DEG C, the mixed solution for obtaining triethylene tetramine in this step
Middle concentration is 0.1wt%；
Solution and wood substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.1Mpa and pressure maintaining 1h；
Step 5 is heated to 200 DEG C of progress hydro-thermal reaction 12h to the substrate after infiltration；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Embodiment 6
Nanogold/graphene wooden structures optical-thermal conversion material preparation method, comprising steps of
Graphene oxide obtained is added distilled water to be slowly diluted to 4mg/ml by step 1；
Progress ultrasonic disperse 1.5h in step 2, the graphene oxide solution for obtaining a certain amount of gold chloride addition step 1,
During ultrasonic disperse, mixed solution temperature is maintained at 20 DEG C, makes concentration 0.04wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse, ultrasound point in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2
1.5h is dissipated, during ultrasonic disperse, mixed solution temperature is maintained at 15 DEG C, and the mixing for obtaining triethylene tetramine in this step is molten
Concentration is 0.06wt% in liquid；
Solution and bamboo matter substrate that step 3 obtains are put into vacuum bag and vacuumize infiltration by step 4, and vacuum degree is maintained at
0.12Mpa and pressure maintaining 1h；
Step 5 is heated to 180 DEG C of progress hydro-thermal reactions to the substrate after infiltration for 24 hours；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photo-thermal
Transition material.
Various prior art materials are compared in test light intensity 1sun (1KW/m2) evaporation rate that is lauched, test result is as follows
Table, the results showed that nanogold/graphene wooden structures optical-thermal conversion material water evaporation rate is much higher than other materials.
Claims (6)
1. a kind of nanogold/graphene wooden structures optical-thermal conversion material preparation method, which is characterized in that including following step
Rapid: step 1, graphene oxide add distilled water to be slowly diluted to 2~5mg/ml；Step 1 is added in a certain amount of gold chloride by step 2
Ultrasonic disperse is carried out in obtained graphene oxide solution, makes concentration 0.02~0.1wt ‰ of the gold chloride in mixed solution；
Step 3 will carry out ultrasonic disperse in the obtained mixed solution of a certain amount of triethylene tetramine addition step 2, and triethylene tetramine is made to exist
Concentration is 0.02~0.1wt% in the mixed solution that this step obtains；Step 4 puts solution and wood substrate that step 3 obtains
Enter and vacuumizes infiltration in vacuum bag；Step 5 is heated to 150~200 DEG C of 12~36h of progress hydro-thermal reaction to the substrate after infiltration；
Step 6, after reaction to the material of acquisition carry out washing be dried to obtain nanogold/graphene wooden structures photothermal conversion material
Material.
2. nanogold according to claim 1/graphene wooden structures optical-thermal conversion material preparation method, feature exist
In holding mixed solution temperature is 15~25 DEG C when ultrasonic disperse in the step 2.
3. nanogold according to claim 1/graphene wooden structures optical-thermal conversion material preparation method, feature exist
In holding mixed solution temperature is 10~25 DEG C when ultrasonic disperse in the step 3.
4. nanogold according to claim 1/graphene wooden structures optical-thermal conversion material preparation method, feature exist
In the ultrasonic disperse time is 0.5~1.5h in the step 2 and step 3.
5. nanogold according to claim 1/graphene wooden structures optical-thermal conversion material preparation method, feature exist
In when the step 3 vacuumizes infiltration, vacuum degree is maintained at 0.1~0.15Mpa and 0.5~1h of pressure maintaining.
6. nanogold according to claim 1/graphene wooden structures optical-thermal conversion material preparation method, feature exist
In the graphene oxide is prepared using improved Hummers ' method.
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