CN110498464A - A kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat - Google Patents

A kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat Download PDF

Info

Publication number
CN110498464A
CN110498464A CN201910725888.8A CN201910725888A CN110498464A CN 110498464 A CN110498464 A CN 110498464A CN 201910725888 A CN201910725888 A CN 201910725888A CN 110498464 A CN110498464 A CN 110498464A
Authority
CN
China
Prior art keywords
photothermal conversion
wood chip
water
carbon nanotube
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910725888.8A
Other languages
Chinese (zh)
Other versions
CN110498464B (en
Inventor
苗蕾
穆晓江
顾宇飞
王鹏飞
周建华
刘静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guilin University of Electronic Technology
Original Assignee
Guilin University of Electronic Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guilin University of Electronic Technology filed Critical Guilin University of Electronic Technology
Priority to CN201910725888.8A priority Critical patent/CN110498464B/en
Publication of CN110498464A publication Critical patent/CN110498464A/en
Application granted granted Critical
Publication of CN110498464B publication Critical patent/CN110498464B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention discloses a kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiats and preparation method and application, pass through freeze-drying one-step shaping, carbon nanotube (CNTs) aeroge and natural wood chip are combined together, constitute bipolar filter layer, preparation method is simple, at low cost, it may be implemented to be mass produced and be widely applied, it can play the role of regulation water to be evaporated additionally by the thickness of control wood chip, matched by regulating and controlling the energy that water to be evaporated is absorbed with absorber, to increase evaporation rate；The heat that upper layer absorber is absorbed is sufficiently used for evaporating, simultaneously, the applications such as sewage treatment, bacterium separation are carried out using this carbon nanotube aerogel/wood chip double-layer structure material, outlying district or poverty-stricken area can be met for being quickly obtained the requirement of pure water, provide a kind of new application mode for solar energy heat utilization.

Description

A kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat
Technical field:
The present invention relates to photothermal conversion materiat technical fields, and in particular to a kind of carbon nanotube aerogel wood chip double-layer structure Photothermal conversion materiat and preparation method and application.
Background technique:
Freshwater resources are very deficient in the world at present, and in order to alleviate the status of world water resources anxiety, scientists are proposed The solar thermal utilization form of solar energy water evaporation, around three light absorption, water transport, heat loss aspects, researchers are by your gold Belong to nanoparticle, semiconductor nano material, conducting organic material or carbon-based material and be used as absorber, gradually increases the dimension of absorber Degree, so as to improve the evaporation rate of vapo(u)rization system, and the energy management absorbed for system with evaporated water and absorber without People research, and it is expensive, preparation process is complicated, be badly in need of solve.
Summary of the invention:
The object of the present invention is to provide a kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat and its preparations Carbon nanotube (CNTs) aeroge and natural wood chip are combined together by method and application by freeze-drying one-step shaping, Bipolar filter layer is constituted, preparation method is simple, at low cost, may be implemented to be mass produced and be widely applied, additionally by control The thickness of wood chip can play the role of regulation water to be evaporated, the energy phase absorbed by regulating and controlling water to be evaporated with absorber Matching, to increase evaporation rate；The heat that upper layer absorber is absorbed is sufficiently used for evaporating, meanwhile, utilization is this Carbon nanotube aerogel/wood chip double-layer structure material carries out the applications such as sewage treatment, bacterium separation, can meet outlying district or Poverty-stricken area provides a kind of new application mode for being quickly obtained the requirement of pure water, for solar energy heat utilization.
The present invention is achieved by the following technical programs:
A kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat, the material are upper with carbon nanotube aerogel Layer, natural wood chip are lower layer, the preparation method of the material the following steps are included:
1) 1~6ml mass fraction is stirred for the chitosan solution of 1~2wt% and 30~150 μ l carbon nano tube dispersion liquids Mixing, obtains uniformly mixed Carbon Nanotubes/Chitosan solution；
2) wood is sawn into wood chip with saw, is then polished with sand paper, wear into circle, later, by the wood chip of milled in wine Ultrasonic in smart environment, ultrasonic power is 60%~100%, then the good wood chip of ultrasound is dry in air dry oven, dry temperature Degree is 60~80 DEG C, repeats ultrasound, drying 3 times, it is ensured that the sawdust for not having polishing remaining on wood；
3) wood chip that step 2) makes 1~2min in the Carbon Nanotubes/Chitosan solution that step 1) obtains is immersed to obtain Quasi- sample；
4) -60~-50 DEG C are set by the pre-freezing temperature of freeze drier, the quasi- sample that step 3) is obtained is placed in freezing 24~30h is freeze-dried in drying machine, then 100~120 DEG C of carbon nanotubes for being dried to obtain double-layer structure in vacuum oven Aeroge/wood chip material.
Particularly, 0.1mol will be used before the carbon nanotube aerogel of double-layer structure made from step 4)/wood chip materials'use In~0.5mol/LNaOH solution and solidify, then be washed with deionized water to neutrality, can be increased the stability and continuity of sample.
Particularly, dried thickness is 5mm~9mm.
The present invention also protects the application of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat, is used for solar energy Hot steam conversion or sewage treatment, the sewage treatment include in bean curd brine bacterium separation or ionic adsorption or sea water desalination or Water-oil separating or heavy mental treatment.
When for the conversion of solar energy hot steam, comprising the following steps: the carbon nanotube aerogel wood chip double-layer structure Photothermal conversion materiat is placed in progress solar energy hot steam conversion in the steam generation facility based on surface local photothermal conversion； The steam generation facility based on surface local photothermal conversion from bottom to top successively includes lower layer's insulated foam coating, water container With upper foam thermal insulation layer (upper and lower two layers of foam thermal insulation layer can also wrap up water container), in upper foam thermal insulation layer Portion, which is dug, a hole up and down, is photothermal conversion materiat layer above upper foam thermal insulation layer；In addition, further including that water delivery is logical Road, the water transport channel lower end is immersed in water container liquid level or less and water transport channel upper end is through insulated foam coating connection photo-thermal Converting material layer provides moisture for photothermal conversion materiat layer；Distilled water is filled in water container；The photothermal conversion materiat layer Photothermal conversion materiat is carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat of the present invention.
The carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat for bacterium separation in bean curd brine or from Heavy mental treatment in son absorption or sea water desalination or water-oil separating or water, comprising the following steps: the carbon nanotube airsetting Bakelite sheet double-layer structure base photothermal conversion materiat is placed in the evaporation based on surface local photothermal conversion-condensing unit system Bacterium separation, ionic adsorption, sea water desalination, water-oil separating, heavy mental treatment are carried out, surface local photothermal conversion should be based on Evaporation-condenser system by the above-mentioned steam generation facility based on surface local photothermal conversion, tip upside down on steam generation facility Condensing cover above water container and the collection vessel that carry vaporising device and condensing cover, the Sheng in the steam generation facility Bean curd brine or grease or salt water or lake water (containing heavy metal ion) are filled in water container respectively, is placed with photothermal conversion materiat layer； The photothermal conversion materiat of the photothermal conversion materiat layer is carbon nanotube aerogel wood chip double-layer structure photothermal conversion material of the present invention Material.
Beneficial effects of the present invention are as follows:
1) present invention is low in cost, and preparation method is simple, can be mass-produced.
2) the carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat that obtains of the present invention by adjusting wood chip thickness Degree, so that the energy that water to be evaporated is absorbed with absorber matches, is most managed to regulate and control water to be evaporated to reach absorber The volatility thought.In 1KWm-2Intensity of illumination under, add the sample of wood chip optimal evaporation generate rate be 2.22kg m-2·h-1, compared with the sample of no wood chip addition, evaporation rate about improves 50%.
3) the carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat that obtains of the present invention, it is attached due to carbon nanotube So that its within the scope of 250~2500nm to the absorptivity of sunlight up to 93.2%.
4) the carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat that the present invention obtains possesses the unique double-deck knot Structure, lower layer are the wood chip of macropore, can play the role of primary filter to sewage to be processed, upper layer is that chitosan and carbon are received Mitron aeroge can be very good to further filter out harmful microorganism and molecule in evaporation process, so that answering Condensed water in is able to maintain very high cleanliness, can be used for bacterium separation in bean curd brine, ionic adsorption, sea water desalination, Water-oil separating, heavy mental treatment.
In short, the present invention is low in cost, preparation method is simple, the carbon nanotube aerogel wood chip double-layer structure photo-thermal of acquisition Converting material passes through the application of energy match mechanism, adjusts wood chip in carbon nanotube aerogel wood chip double-layer structure photothermal conversion material Thickness in material effectively improves steam generation rate to adjust water to be evaporated, while right within the scope of 250~2500nm The absorptivity of sunlight is up to 93.2%.In 1KWm-2Intensity of illumination under, it is 2.22kgm that the evaporation of sample, which generates rate,-2·h-1.In addition, unique double-layer filter structure, so that the carbon nanotube aerogel wood chip double-layer structure photothermal conversion material obtained Material bacterium separation, ionic adsorption, sea water desalination, water-oil separating, heavy mental treatment in bean curd brine have more satisfactory Effect, provide new approaches for various sewage treatments.
Detailed description of the invention:
Fig. 1 is that carbon nanotube aerogel/wood chip double-layer structure photothermal conversion materiat microstructure that embodiment 1 obtains is swept Retouch electron microscope picture；
Fig. 2 is carbon nanotube aerogel/wood chip double-layer structure photothermal conversion materiat ultraviolet-visible light-that embodiment 1 obtains Near-infrared absorption spectrum figure；
Fig. 3 is the structural schematic diagram of steam generation facility of the embodiment 3 based on surface local photothermal conversion；
Wherein 1, lower layer's insulated foam coating, 2, water container, 3, upper foam thermal insulation layer, 4, water transport channel, 5, photo-thermal turn Change material layer；
Fig. 4 is the carbon nanotube aerogel/wood chip double-layer structure photothermal conversion materiat for the different-thickness that embodiment 3 obtains Quality of steam loss-time chart；Wherein CA refers to the sample for not adding wood chip, CACW5Finger dried thickness is 5mm, CACW7 Finger dried thickness is 7mm, CACW9Finger dried thickness is 9mm；
Fig. 5 is the sewage treatment experimental device front view of embodiment 4；
1, steam generation facility, 2, condensing cover, 3, collection vessel；
Fig. 6 is the shows fluorescent microscopy images of 4 bean curd brine filtered fluid and condensate liquid of embodiment；
Wherein, (a) brine filtered fluid shows fluorescent microscopy images (b) condensate liquid shows fluorescent microscopy images.
Fig. 7 is bean curd brine filtered fluid and condensate liquid intermediate ion concentration in 3 experiment condition 1 of embodiment；
Fig. 8 is the shows fluorescent microscopy images of oil water mixture and condensate liquid in 3 experiment condition 2 of embodiment；
Wherein, (a) grease shows fluorescent microscopy images (b) condensed water shows fluorescent microscopy images
Fig. 9 is the ion concentration of natural lake water and condensate liquid in 3 experiment condition 3 of embodiment.
Specific embodiment:
It is to further explanation of the invention, rather than limiting the invention below.
A kind of embodiment 1: preparation method of carbon nanotube aerogel/wood chip double-layer structure photothermal conversion materiat
The material is using carbon nanotube aerogel as upper layer, and natural wood chip is lower layer, and preparation method includes the following steps:
It 1) be 1.5wt% chitosan and 70 μ l carbon nano tube dispersion liquids by 3ml mass fraction in basal diameter is about 3cm's It is mixed in beaker, then 8~10min is stirred with magnetic stirrer, so that chitosan and carbon nanotube (CNTs) dispersion liquid are abundant Mixing, obtains uniform Carbon Nanotubes/Chitosan solution；
2) natural wood is sawn into area with saw is 3cm × 3cm × 1cm wood chip, is then polished with 320 mesh sand paper, Wood is worn into the circle that diameter of section is about 3cm, thickness 5mm is later, ultrasonic in alcohol environment by the wood chip of milled, surpasses Acoustical power is 60%~100%, then the good wood chip of ultrasound is placed in drying in air dry oven, and drying temperature is 60~80 DEG C, Repeat ultrasound, drying 3 times, it is ensured that the sawdust for not having polishing remaining on wood；
3) the round wood chip that step 2) obtains is placed in uniform carbon nanotubes aeroge/chitosan solution of step 1) acquisition In 1~2min so that solution comes into full contact with wood chip；
4) the quasi- bilayer sample that step 3) obtains is placed in freeze drier 24~30h of freezing, freeze drier it is pre- Freezing temperature is -60~-50 DEG C；100~120 DEG C of dry 3h are placed in a vacuum drying oven, except the acetic acid of de-redundancy, can be obtained double Carbon nanotube aerogel/wood chip material of layer structure；
5) material that step 4) obtains is used in 0.1mol~0.5mol/LNaOH solution and is solidified, Zhi Houzai again using preceding It is washed with deionized water to neutrality, can be increased the stability and continuity of sample.
Embodiment 2:
Reference implementation example 1, the difference is that: step 1) are as follows: by 1ml mass fraction be 1wt% chitosan and 30 μ l carbon Nanotube dispersion liquid mixes in the beaker that basal diameter is about 3cm, then 8~10min is stirred with magnetic stirrer, so that shell Glycan and carbon nano tube dispersion liquid are sufficiently mixed, and obtain uniform Carbon Nanotubes/Chitosan solution；Step 2) are as follows: will be naturally wooden It is 3cm × 3cm × 1cm wood chip that head, which is sawn into area with saw, is then polished with 320 mesh sand paper, wood is worn into diameter of section The about circle of 3cm, thickness 7mm is later, ultrasonic in alcohol environment by the wood chip of milled, and ultrasonic power is 60%~ 100%, then the good wood chip of ultrasound is placed in drying in air dry oven, drying temperature is 60~80 DEG C, repeats ultrasound, dry 3 It is secondary, it is ensured that the sawdust for not having polishing remaining on wood.
Embodiment 3: steam generation experiment
Photothermal conversion materiat of the present invention, under experiment condition what follows, illumination after a certain period of time, be can produce certain The steam of amount.
It is illustrated in figure 3 steam generation facility of the present embodiment based on surface local photothermal conversion, the device is from bottom to top Including lower layer's insulated foam coating 1, water container 2 and upper foam thermal insulation layer 3, digging inside upper foam thermal insulation layer 3 has about one The hole of perforation is photothermal conversion materiat layer 5 above upper foam thermal insulation layer 3, additionally includes water transport channel 4, the water delivery Channel lower end is immersed in 2 liquid level of water container or less and water transport channel upper end is through the connection photothermal conversion of upper foam thermal insulation layer 3 Material layer 5 provides moisture for photothermal conversion materiat layer 5, fills distilled water in water container 2；The photothermal conversion materiat layer 5 Photothermal conversion materiat is carbon nanotube aerogel/wood chip double-layer structure base photothermal conversion materiat.Lower layer's insulated foam coating 1 It is respectively 10 × 10 × 3.2cm with upper foam thermal insulation layer 33With 10 × 10 × 2.2cm3Polystyrene foam.The water delivery is logical Road is cut into the dust-free paper of strip by edge and basal diameter is about 3cm, the polystyrene foam composition of a height of 1.2cm.
Specific experiment condition is as follows:
Experiment condition 1: the intensity of illumination of simulated solar irradiation is 1kWm-2, liquid is 6~20mL deionization in water container Water, light application time 60min, photothermal conversion materiat are simple carbon nanotube aerogel, and no wood chip, preparation method is referring to real 1 carbon nanotube aerogel of example/wood chip double-layer structure photothermal conversion materiat preparation process is applied, the difference is that omitting step 2) With 3), comprising the following steps: by 3ml mass fraction be 1.5wt% chitosan and 70 μ l carbon nano tube dispersion liquids in basal diameter It is about mixed in the beaker of 3cm, then 8~10min is stirred with magnetic stirrer, so that chitosan and carbon nano tube dispersion liquid fill Divide mixing, obtains uniform Carbon Nanotubes/Chitosan solution；It is subsequently placed in 24-30h of freezing in freeze drier, freeze-drying The pre-freezing temperature of machine is -60~-50 DEG C；100~120 DEG C of dry 3h are placed in a vacuum drying oven, the material of acquisition is before use It uses in 0.1mol~0.5mol/LNaOH solution and solidifies again, be washed with deionized water again later to neutrality.It is placed in homemade photo-thermal On transformation experiment device (as shown in Figure 3).
Experiment condition 2: the intensity of illumination of simulated solar irradiation is 1kWm-2, liquid is 6~20mL deionization in water container Water, light application time 60min, photothermal conversion materiat are that carbon nanotube aerogel/wood chip double-layer structure photo-thermal described in embodiment 1 turns Change material, wherein dried thickness 5mm.It is placed on homemade photothermal conversion experimental provision (as shown in Figure 3).
Experiment condition 3: the intensity of illumination of simulated solar irradiation is 1kWm-2, liquid is 6~20mL deionization in water container Water, light application time 60min, CNTs aeroge/wood chip double-layer structure base photo-thermal described in photothermal conversion materiat reference implementation example 1 turn Change material, the difference is that, dried thickness 7mm.It is placed on homemade photothermal conversion experimental provision (as shown in Figure 3).
Experiment condition 4: the intensity of illumination of simulated solar irradiation is 1kWm-2, liquid is 6~20mL deionization in water container Water, light application time 60min, CNTs aeroge/wood chip double-layer structure base photo-thermal described in photothermal conversion materiat reference implementation example 1 turn Change material, the difference is that dried thickness is 9mm.It is placed on homemade photothermal conversion experimental provision (as shown in Figure 3).
Solar energy water evaporation experiment condition and steam generation rate the results are shown in Table 1:
Table 1
The carbon nanotube aerogel of different-thickness wood chip/wood chip double-layer structure photothermal conversion materiat steam generation rate- Time chart is as shown in Figure 4.
It can thus be appreciated that: the powerful hydrophily of simple carbon nanotube aerogel (water contact angle be 67.85 °) and its from the sun The energy level absorbed at light mismatches, and can not reach the optimal evaporation performance of carbon nanotube, and wood is due to having naturally Vertical channel and lower hydrophily (water contact angle is 88.90 °), can play transport moisture and regulate and control the work of water to be evaporated With by can oneself in the case where absorber absorbs energy coincidence for nature wood chip and carbon nanotube aerogel combination Water to be evaporated is controlled by ground, enables to match with energy, to reach the optimal volatility of absorber.
Thickness by controlling wood chip can play the role of regulation water to be evaporated, by regulating and controlling water to be evaporated and inhaling The energy that acceptor absorbs matches, to increase evaporation rate.
Embodiment 4: sewage treatment experiment
Carbon nanotube aerogel/wood chip double-layer structure base photothermal conversion materiat, under experiment condition what follows, in light According to after a certain period of time, can produce a certain amount of steam, and collected after being condensed.
As shown in figure 5, be somebody's turn to do the evaporation-condensation apparatus system based on surface local photothermal conversion includes steam hair from inside to outside Generating apparatus 1 tips upside down on the condensing cover 2 in steam generation facility 1 above water container and carries water container and condensing cover Collection vessel 3, the steam generation facility includes lower layer's insulated foam coating, water container and upper foam thermal insulation layer, upper layer Digging inside insulated foam coating has a hole up and down, is photothermal conversion materiat layer above upper foam thermal insulation layer, and upper and lower two The bottom surface of layer insulated foam coating is the circle that diameter is about 8cm, and the water container is the culture dish that diameter is about 6cm, is contained Pending liquid, the condensing cover are that the diameter tipped upside down on above culture dish is 9cm beaker, carry water container with it is cold It is 10cm culture dish that the collection vessel of solidifying cover, which is diameter,；The photothermal conversion materiat of the photothermal conversion materiat layer is CNTs airsetting Glue/wood chip double-layer structure base photothermal conversion materiat.
Specific experiment condition is as follows:
Experiment condition 1: the intensity of illumination of simulated solar irradiation is 6kWm-2, liquid to be evaporated is the beans that 25mL is derived from bean curd mill Rotten brine filtered fluid, light application time 360min, photothermal conversion materiat are that carbon nanotube aerogel/wood chip described in embodiment 1 is double Layer structure base photothermal conversion materiat, the difference is that, dried thickness 7mm.It is placed in homemade evaporation-condensation experimental provision In (such as Fig. 5).Culture dish obtains the Escherichia coli test paper test result of condensate liquid and bean curd brine filtered fluid are as follows: condensate liquid is free of Escherichia coli, bean curd brine filtered fluid contain Escherichia coli.
Brine filtered fluid shows fluorescent microscopy images and condensate liquid shows fluorescent microscopy images are referring to Fig. 6.
Bean curd brine filtered fluid and condensate liquid intermediate ion concentration are referring to Fig. 7.
Experiment condition 2: the intensity of illumination of simulated solar irradiation is 6kWm-2, liquid to be evaporated is the mixed of 25mL water and vegetable oil Liquid, light application time 360min are closed, photothermal conversion materiat is carbon nanotube aerogel/wood chip double-layer structure base described in embodiment 1 Photothermal conversion materiat, the difference is that, dried thickness 7mm.It is placed in homemade evaporation-condensation experimental provision (such as Fig. 5). Culture dish obtains the shows fluorescent microscopy images of condensate liquid and oil water mixture referring to Fig. 8
Experiment condition 3: the intensity of illumination of simulated solar irradiation is 6kWm-2, liquid to be evaporated is 25mL nature lake water, when illumination Between be 360min, photothermal conversion materiat be embodiment 1 described in carbon nanotube aerogel/wood chip double-layer structure base photothermal conversion material Material, the difference is that, dried thickness 7mm.It is placed in homemade evaporation-condensation experimental provision (such as Fig. 5).Culture dish obtains The ion concentration of condensate liquid and natural lake water is referring to Fig. 8
The above experiment is learnt in condensed water of the present invention without pollutant, can be used for bacterium isolation or grease point in bean curd brine From or the sewage treatments such as lake water heavy mental treatment.

Claims (7)

1. a kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat, which is characterized in that the material is with carbon nanotube Aeroge is upper layer, and natural wood chip is lower layer, the preparation method of the material the following steps are included:
1) 1~6ml mass fraction is stirred and is mixed for the chitosan solution of 1~2wt% and 30~150 μ l carbon nano tube dispersion liquids It closes, obtains uniformly mixed Carbon Nanotubes/Chitosan solution；
2) wood is sawn into wood chip with saw, is then polished with sand paper, wear into circle, later, by the wood chip of milled in alcohol ring Ultrasonic in border, ultrasonic power is 60%~100%, then the good wood chip of ultrasound is dry in air dry oven, and drying temperature is 60~80 DEG C, repeat ultrasound, drying, it is ensured that the sawdust for not having polishing remaining on wood；
3) wood chip that step 2) makes is immersed into 1~2min in the Carbon Nanotubes/Chitosan solution that step 1) obtains and obtains quasi- sample Product；
4) -60~-50 DEG C are set by the pre-freezing temperature of freeze drier, the quasi- sample that step 3) is obtained is placed in freeze-drying 24~30h is freeze-dried in machine, then 100~120 DEG C of carbon nanotube airsettings for being dried to obtain double-layer structure in vacuum oven Glue/wood chip material.
2. photothermal conversion materiat according to claim 1, which is characterized in that receive the carbon of double-layer structure made from step 4) With in 0.1mol~0.5mol/LNaOH solution and solidifying before mitron aeroge/wood chip materials'use, then be washed with deionized water to It is neutral.
3. photothermal conversion materiat according to claim 1 or 2, which is characterized in that dried thickness is 5mm~9mm.
4. carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat described in any one of claim 1-3 claim Application, which is characterized in that for solar energy hot steam conversion or sewage treatment.
5. application according to claim 4, which is characterized in that when for the conversion of solar energy hot steam, including following step Rapid: the carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat is placed in the steam based on surface local photothermal conversion The conversion of solar energy hot steam is carried out in generating device；The steam generation facility based on surface local photothermal conversion by lower and On successively include lower layer's insulated foam coating, water container and upper foam thermal insulation layer, digging inside upper foam thermal insulation layer has on one The hole of lower perforation, upper foam thermal insulation layer top is photothermal conversion materiat layer；In addition, further include water transport channel, the water delivery Channel lower end is immersed in water container liquid level or less and insulated foam coating connection photothermal conversion materiat layer is run through in water transport channel upper end, Moisture is provided for photothermal conversion materiat layer；Distilled water is filled in water container；The photothermal conversion material of the photothermal conversion materiat layer Material is carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat of the present invention.
6. application according to claim 4, which is characterized in that the sewage treatment include in bean curd brine bacterium separation or Ionic adsorption or sea water desalination or water-oil separating or heavy mental treatment.
7. application according to claim 6, which is characterized in that the carbon nanotube aerogel wood chip double-layer structure photo-thermal turns Change material for heavy metal ion in bacterium separation in bean curd brine or ionic adsorption or sea water desalination or water-oil separating or water at Reason, comprising the following steps: the carbon nanotube aerogel wood chip double-layer structure base photothermal conversion materiat is placed in based on surface office Bacterium separation, ionic adsorption, sea water desalination, water-oil separating, a huge sum of money are carried out in the evaporation of domain photothermal conversion-condensing unit system Belong to ion processing, should evaporation-condenser system based on surface local photothermal conversion by above-mentioned based on surface local photothermal conversion Steam generation facility tips upside down on the condensing cover above the water container of steam generation facility and carries vaporising device and condensing cover Collection vessel, fill bean curd brine or grease or salt water respectively in the water container in the steam generation facility or containing a huge sum of money Belong to ion lake water, is placed with photothermal conversion materiat layer；The photothermal conversion materiat of the photothermal conversion materiat layer is carbon nanometer of the present invention Pipe airsetting bakelite sheet double-layer structure photothermal conversion materiat.
CN201910725888.8A 2019-08-07 2019-08-07 Photothermal conversion material with carbon nanotube aerogel wood chip double-layer structure Active CN110498464B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910725888.8A CN110498464B (en) 2019-08-07 2019-08-07 Photothermal conversion material with carbon nanotube aerogel wood chip double-layer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910725888.8A CN110498464B (en) 2019-08-07 2019-08-07 Photothermal conversion material with carbon nanotube aerogel wood chip double-layer structure

Publications (2)

Publication Number Publication Date
CN110498464A true CN110498464A (en) 2019-11-26
CN110498464B CN110498464B (en) 2021-10-26

Family

ID=68587118

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910725888.8A Active CN110498464B (en) 2019-08-07 2019-08-07 Photothermal conversion material with carbon nanotube aerogel wood chip double-layer structure

Country Status (1)

Country Link
CN (1) CN110498464B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111204831A (en) * 2020-01-19 2020-05-29 陕西科技大学 CNF-based homologous heterogeneous photothermal material for seawater desalination and preparation method thereof
CN111218025A (en) * 2020-01-08 2020-06-02 东华大学 Tree-like photo-thermal hydrogel and preparation method and application thereof
CN111285425A (en) * 2020-04-01 2020-06-16 国际竹藤中心 Preparation and application method of carbon nanotube-palmetto vine film
CN113896834A (en) * 2021-11-03 2022-01-07 桂林电子科技大学 Preparation method and application of composite hydrogel photothermal conversion material
CN114314719A (en) * 2022-01-28 2022-04-12 中国科学院重庆绿色智能技术研究院 Composite evaporation rod based on interface evaporation and application thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127708A1 (en) * 2016-01-22 2017-07-27 Voxel8, Inc. 3d printable composite waterborne dispersions
CN107443823A (en) * 2017-08-11 2017-12-08 中国林业科学研究院林产化学工业研究所 A kind of forest and agricultural biomass base photothermal conversion materiat for water process, preparation method and applications
CN107487801A (en) * 2017-08-11 2017-12-19 桂林电子科技大学 A kind of preparation method for the porous charcoal piece for realizing the conversion of efficiency light vapours
CN107934937A (en) * 2017-11-24 2018-04-20 中国科学院深圳先进技术研究院 A kind of carbon material black phosphorus alkene composite aerogel and preparation method thereof
CN108745306A (en) * 2018-06-27 2018-11-06 东华理工大学 A kind of preparation method of epoxychloropropane cross-linked chitosan/aminated carbon nano tube composite aerogel
CN108905981A (en) * 2018-07-12 2018-11-30 山东联星能源集团有限公司 A kind of graphene/CNTs aeroge preparation method of low cost absorption heavy metal ion
CN109266314A (en) * 2018-11-16 2019-01-25 北京师范大学 A kind of flexible compound phase-change material and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127708A1 (en) * 2016-01-22 2017-07-27 Voxel8, Inc. 3d printable composite waterborne dispersions
CN107443823A (en) * 2017-08-11 2017-12-08 中国林业科学研究院林产化学工业研究所 A kind of forest and agricultural biomass base photothermal conversion materiat for water process, preparation method and applications
CN107487801A (en) * 2017-08-11 2017-12-19 桂林电子科技大学 A kind of preparation method for the porous charcoal piece for realizing the conversion of efficiency light vapours
CN107934937A (en) * 2017-11-24 2018-04-20 中国科学院深圳先进技术研究院 A kind of carbon material black phosphorus alkene composite aerogel and preparation method thereof
CN108745306A (en) * 2018-06-27 2018-11-06 东华理工大学 A kind of preparation method of epoxychloropropane cross-linked chitosan/aminated carbon nano tube composite aerogel
CN108905981A (en) * 2018-07-12 2018-11-30 山东联星能源集团有限公司 A kind of graphene/CNTs aeroge preparation method of low cost absorption heavy metal ion
CN109266314A (en) * 2018-11-16 2019-01-25 北京师范大学 A kind of flexible compound phase-change material and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111218025A (en) * 2020-01-08 2020-06-02 东华大学 Tree-like photo-thermal hydrogel and preparation method and application thereof
CN111204831A (en) * 2020-01-19 2020-05-29 陕西科技大学 CNF-based homologous heterogeneous photothermal material for seawater desalination and preparation method thereof
CN111285425A (en) * 2020-04-01 2020-06-16 国际竹藤中心 Preparation and application method of carbon nanotube-palmetto vine film
CN111285425B (en) * 2020-04-01 2022-03-15 国际竹藤中心 Preparation and application method of carbon nanotube-palmetto vine film
CN113896834A (en) * 2021-11-03 2022-01-07 桂林电子科技大学 Preparation method and application of composite hydrogel photothermal conversion material
CN114314719A (en) * 2022-01-28 2022-04-12 中国科学院重庆绿色智能技术研究院 Composite evaporation rod based on interface evaporation and application thereof

Also Published As

Publication number Publication date
CN110498464B (en) 2021-10-26

Similar Documents

Publication Publication Date Title
CN110498464A (en) A kind of carbon nanotube aerogel wood chip double-layer structure photothermal conversion materiat
Wang et al. Solar-powered nanostructured biopolymer hygroscopic aerogels for atmospheric water harvesting
Huang et al. Review of interface solar-driven steam generation systems: High-efficiency strategies, applications and challenges
CN110090603A (en) A kind of MXene and graphene oxide composite aerogel and its preparation method and application
CN107487801B (en) Preparation method of porous charcoal piece for realizing efficient photo-thermal steam conversion
CN107829330A (en) A kind of preparation method of photo-thermal distillation film and the high-efficiency solar desalter containing photo-thermal distillation film
CN113005765B (en) Hydrophilic-hydrophobic 'Shuangshen' structure composite photothermal conversion material, preparation method and application thereof
Wang et al. A self-floating and integrated bionic mushroom for highly efficient solar steam generation
Cai et al. Advances in desalination technology and its environmental and economic assessment
Sun et al. Mesoporous cellulose/TiO 2/SiO 2/TiN-based nanocomposite hydrogels for efficient solar steam evaporation: Low thermal conductivity and high light-heat conversion
CN108715471B (en) Seawater desalination method based on copper nanoparticle photothermal effect
Feng et al. An efficient torrefaction Bamboo-based evaporator in interfacial solar steam generation
Guo et al. based integrated evaporation device for efficient solar steam generation through localized heating
CN107178772A (en) A kind of solar steam generation device of tri compound and its application
Guo et al. Design of MoS2/MMT bi-layered aerogels integrated with phase change materials for sustained and efficient solar desalination
Li et al. Porous wood-carbonized solar steam evaporator
CN113549228B (en) Solar evaporation body based on controllable closed-pore hydrogel and preparation method thereof
Kong et al. Manipulating a vertical temperature-gradient of Fe@ Enteromorpha/graphene aerogel to enhanced solar evaporation and sterilization
CN109092248A (en) A kind of biology carbon material and the preparation method and application thereof
CN111218025A (en) Tree-like photo-thermal hydrogel and preparation method and application thereof
CN112390247B (en) Reduced graphene oxide-carbon nanotube/cesium tungsten bronze composite three-dimensional foam material and preparation method thereof
Li et al. Biomass-based materials for solar-powered seawater evaporation
Nabeela et al. Hydrophilic 3D interconnected network of bacterial nanocellulose/black titania photothermal foams as an efficient interfacial solar evaporator
Wang et al. Highly efficient self-floating jellyfish-like solar steam generators based on the partially carbonized Enteromorpha aerogel
Ghafurian et al. Interfacial solar steam generation by sawdust coated with W doped VO2

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20191126

Assignee: Guangxi Ouliwen Information Technology Co.,Ltd.

Assignor: GUILIN University OF ELECTRONIC TECHNOLOGY

Contract record no.: X2022450000388

Denomination of invention: A carbon nanotube aerogel wood chip double-layer photothermal conversion material

Granted publication date: 20211026

License type: Common License

Record date: 20221226

EE01 Entry into force of recordation of patent licensing contract