CN103316637A - Preparation method of three-dimensional metal mesh with preferential adsorption/separation performance - Google Patents
Preparation method of three-dimensional metal mesh with preferential adsorption/separation performance Download PDFInfo
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- CN103316637A CN103316637A CN2013102983968A CN201310298396A CN103316637A CN 103316637 A CN103316637 A CN 103316637A CN 2013102983968 A CN2013102983968 A CN 2013102983968A CN 201310298396 A CN201310298396 A CN 201310298396A CN 103316637 A CN103316637 A CN 103316637A
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Abstract
A preparation method of a three-dimensional metal mesh with preferential adsorption/separation performance comprises the following steps: (1) graphene with the nanosheet thickness is coated on a metal mesh by an immersion method so as to construct nanoscale surface roughness, and then a matter with low surface energy is coated on the graphene surface layer by an immersion method so as to change chemical energy of the surface and construct a super-hydrophobic super-lipophilic two-dimension metal mesh with surface water contact angle being 150-155 degrees and oil contact angle being zero degree; and (2) the at least two two-dimension metal meshes are angled and overlapped to form a stereo three-dimensional metal mesh.
Description
Technical field
The present invention relates to environmental protection technology, specifically relate to the preparation of the 3-dimensional metal net with selective absorption/separating property.
Background technology
Problem of environmental pollution has caused the attention of countries in the world.Adsorption technology is that poisonous industrial organic waste liquid or the crude oil leakage pollutant removed in the water body are a kind of effective methods, but traditional sorbing material such as active carbon, molecular sieve, diatomite etc., some shortcomings of ubiquity: (1) adsorption capacity is lower, and the adsorbance of oil and organic solvent is generally only had several times to tens times (weight ratio); (2) poor selectivity.Although activated carbon or porous carbon can adsorbed oil or organic solvents, it also has certain adsorption capacity to glassware for drinking water simultaneously, therefore be used for oil (organic solvent)/moisture from the time unsatisfactory.Although also have at present the polymer of the sorbing material of some reports such as CNT, hybrid inorganic-organic materials, functionalization or resin etc. to be used for the absorption of water body oil or non-polar solven, in various degree existence and activated carbon or similar shortcomings of porous carbon all.
At present, sorbing material is carried out the surface hydrophobic modification and become the important channel of improving the material adsorptive selectivity.Yet the sorbing material with super hydrophobic surface of report only has several examples at present: such as the super-hydrophobic film by the fabricate of nanowires, and the super-hydrophobic materials such as nano-pore polystyrene, super-hydrophobic graphene sponge etc.Preparation costs are relatively more expensive on the one hand, the absorption multiplying power is limited for these super hydrophobic materials, and these materials mostly are two-dimensional structure on the other hand, the use in having limited it particularly extensive Crude Oil at Sea leaking in practice.
Summary of the invention
The purpose of this invention is to provide a kind ofPreparation method with 3-dimensional metal net of selective absorption/separating property.
The present invention is the preparation method with 3-dimensional metal net of selective absorption/separating property, the steps include:
(1) is coated on the metal grill to construct the surface roughness of micro/nano-scale by the Graphene of infusion process with nanoscale twins thickness, and then be coated on the Graphene top layer to change its surface chemistry energy by the material of infusion process with low-surface-energy, constructing the surface water contact angle is 150 ~ 155 degree, and the contact angle of oil is that having of 0 degree is super-hydrophobic, the two-dimensional metallic grid of super-oleophilic energy;
(2) be three-dimensional 3-dimensional metal net with at least two angled overlap joints of two-dimensional metallic grid.
Usefulness of the present invention is: preparation were established is simple, easy and simple to handle, material is applied to oil in the water body or non-polar solven separates, during absorption, has adsorbance large, the advantage selective high, that reusability is good, reveal at crude oil process, industrial organic waste liquid is processed, liquid/liquid separates and the fields such as water treatment have potential using value.
Description of drawings
Fig. 1 is the SEM figure of the prepared two-dimensional metallic net of embodiment 1, Fig. 2 ~ Fig. 5 is the procedure chart of the selective absorption of the prepared 3-dimensional metal net of embodiment 2, Fig. 6 is the Dynamic Selection absorption figure of the prepared cylindrical metal net of embodiment 2, Fig. 7 be the prepared 3-dimensional metal net of embodiment 2 to the theoretical adsorbance of different organic matters and oil product, Fig. 8 is the recycling performance figure of the prepared 3-dimensional metal net of embodiment 2.
The specific embodiment
The present invention is the preparation method with 3-dimensional metal net of selective absorption/separating property, the steps include:
(1) is coated on the metal grill to construct the surface roughness of micro/nano-scale by the Graphene of infusion process with nanoscale twins thickness, and then be coated on the Graphene top layer to change its surface chemistry energy by the material of infusion process with low-surface-energy, constructing the surface water contact angle is 150 ~ 155 degree, and the contact angle of oil is that having of 0 degree is super-hydrophobic, the two-dimensional metallic grid of super-oleophilic energy;
(2) be three-dimensional 3-dimensional metal net with at least two angled overlap joints of two-dimensional metallic grid.
According to the aboveMethod, by infusion process the Graphene of nanoscale twins thickness is coated on the metal grill with the surface roughness of structure micro/nano-scale, the lamellar spacing of Graphene is between 0.8 ~ 2 nanometer.
According to more thanDescribed method, the Graphene of nano thickness adopts dilatometry, perhaps graphite oxidation, perhaps reducing process makes.
According to more thanDescribed method, the material of low-surface-energy is dimethyl silicone polymer, perhaps ptfe emulsion, perhaps 13 fluoro trimethoxy silanes.
According to more thanDescribed method, employed metal grill are stainless steel mesh, or the copper screen cloth, and the order number of screen cloth is between 200 ~ 400 orders.
According to more thanDescribed method, the 3-dimensional metal net of overlap joint is cube, or column.
Further launch the present invention below by specific embodiment more.
Embodiment 1:
The 30mg graphite oxide is dissolved in ultrasonic dispersion 30min in the 10mL distilled water, makes 3mg/mL graphite oxide aqueous solution, according to organic phase and water volume ratio 9:1, add 90mL nitrogen, nitrogen-dimethyl formamide is made 0.3mg/mL graphene oxide solution.Add 30 μ L hydrazine hydrates, in 80 ℃ of reaction 1h, obtain the Graphene maceration extract.Selecting the order number is that 400 metal grill is substrate, and dipping, 80 ℃ of oven dry are attached to graphene sheet layer on the metal grill.Subsequently, the metal grill that will adhere to Graphene is dipped in the toluene solution of dimethyl silicone polymer of 1mg/ml, obtains having two-dimensional metallic net super-hydrophobic, super-oleophilic matter after 12 hours through 80 ℃ of dryings.Its SEM photo as shown in Figure 1, the two-dimensional metallic net surface of preparation adheres to the stratiform Graphene and has formed the micro-rough face as seen from the figure.
Embodiment 2:
Super-hydrophobic, the super oleophylic two-dimensional metallic grid that obtains in the embodiment 1 is made cube or cylindrical metal net sorbing material by mechanical processing tools.Fig. 2 ~ Fig. 5 has shown that the cube wire netting is for organic selective absorption procedure chart in the water.Fig. 6 has shown that the cylindrical metal net is for organic Dynamic Selection absorption figure in the water.Fig. 7 has shown that the cube wire netting is for organic adsorbance in the water.Fig. 8 has shown the repeatability of cube wire netting in application take the surface water contact angle as foundation.
The contact angle of the super-hydrophobic wire netting surface water of the present invention's preparation is 152 degree, the contact angle of oil is 6.7 degree, oil in the water body and non-polar solven had selective adsorption capacity (adsorbed oil or non-polar solven, adsorbed water not), repeat performance is good, can reclaim by methods such as simple distillation, washings to re-use; By simple construction method, the two-dimensional metallic net is made 3D shape, just can prepare the 3-dimensional metal net with selective absorption/separating property, it has high selective and large theoretical adsorbance to a series of oil, non-polar solven and polar solvent.
Claims (6)
1. have the preparation method of the 3-dimensional metal net of selective absorption/separating property, the steps include:
(1) is coated on the metal grill to construct the surface roughness of micro/nano-scale by the Graphene of infusion process with nanoscale twins thickness, and then be coated on the Graphene top layer to change its surface chemistry energy by the material of infusion process with low-surface-energy, constructing the surface water contact angle is 150 ~ 155 degree, and the contact angle of oil is that having of 0 degree is super-hydrophobic, the two-dimensional metallic grid of super-oleophilic energy;
(2) be three-dimensional 3-dimensional metal net with at least two angled overlap joints of two-dimensional metallic grid.
2.
According toPreparation method with 3-dimensional metal net of selective absorption/separating property claimed in claim 1, it is characterized in that: by infusion process the Graphene of nanoscale twins thickness is coated on the metal grill with the surface roughness of structure micro/nano-scale, the lamellar spacing of Graphene is between 0.8 ~ 2 nanometer.
3.
According toPreparation method with 3-dimensional metal net of selective absorption/separating property claimed in claim 1 is characterized in that: the Graphene of nano thickness adopts dilatometry, perhaps graphite oxidation, and perhaps reducing process makes.
4.
According toPreparation method with 3-dimensional metal net of selective absorption/separating property claimed in claim 1, the material that it is characterized in that low-surface-energy is dimethyl silicone polymer, perhaps ptfe emulsion, perhaps 13 fluoro trimethoxy silanes.
5.
According toPreparation method with 3-dimensional metal net of selective absorption/separating property claimed in claim 1 is characterized in that employed metal grill is stainless steel mesh, or the copper screen cloth, and the order number of screen cloth is between 200 ~ 400 orders.
6.
According toPreparation method with 3-dimensional metal net of selective absorption/separating property claimed in claim 1 is characterized in that the 3-dimensional metal net that overlaps is cube, or column.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606925A (en) * | 2015-01-28 | 2015-05-13 | 郑州大学 | Method for preparing super-hydrophobic super-oleophilic porous material |
| CN106830349A (en) * | 2016-12-28 | 2017-06-13 | 苏州大学 | Polymer-modified material of microorganism and preparation method thereof is wrapped up with the application in N, the treatment of N dimethylformamides |
| CN107417277A (en) * | 2017-07-24 | 2017-12-01 | 西北工业大学 | A kind of porous carbon materials are heat-insulated with the standby method of anti-oxidant coordinate system |
| CN109316976A (en) * | 2018-10-25 | 2019-02-12 | 长春工业大学 | A kind of electrochemical process preparation bionical graphene composite film of super-hydrophobic super-oleophylic |
| CN109621554A (en) * | 2019-01-23 | 2019-04-16 | 江苏盖姆纳米材料科技有限公司 | A kind of water-oil separation silk screen and utilize filter core made of the silk screen |
| CN110755888A (en) * | 2019-11-29 | 2020-02-07 | 济南大学 | Preparation method of super-hydrophobic oleophylic material |
| CN115382834A (en) * | 2022-09-06 | 2022-11-25 | 苏州清越光电科技股份有限公司 | Mask plate cleaning mechanism and mask plate cleaning equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104606925A (en) * | 2015-01-28 | 2015-05-13 | 郑州大学 | Method for preparing super-hydrophobic super-oleophilic porous material |
| CN106830349A (en) * | 2016-12-28 | 2017-06-13 | 苏州大学 | Polymer-modified material of microorganism and preparation method thereof is wrapped up with the application in N, the treatment of N dimethylformamides |
| CN107417277A (en) * | 2017-07-24 | 2017-12-01 | 西北工业大学 | A kind of porous carbon materials are heat-insulated with the standby method of anti-oxidant coordinate system |
| CN107417277B (en) * | 2017-07-24 | 2020-06-16 | 西北工业大学 | Method for synergistically preparing heat insulation and antioxidation of porous carbon material |
| CN109316976A (en) * | 2018-10-25 | 2019-02-12 | 长春工业大学 | A kind of electrochemical process preparation bionical graphene composite film of super-hydrophobic super-oleophylic |
| CN109316976B (en) * | 2018-10-25 | 2021-05-11 | 长春工业大学 | Super-hydrophobic super-oleophylic bionic graphene composite membrane prepared by electrochemical method |
| CN109621554A (en) * | 2019-01-23 | 2019-04-16 | 江苏盖姆纳米材料科技有限公司 | A kind of water-oil separation silk screen and utilize filter core made of the silk screen |
| CN110755888A (en) * | 2019-11-29 | 2020-02-07 | 济南大学 | Preparation method of super-hydrophobic oleophylic material |
| CN115382834A (en) * | 2022-09-06 | 2022-11-25 | 苏州清越光电科技股份有限公司 | Mask plate cleaning mechanism and mask plate cleaning equipment |
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