CN113173778A - Ordered pore bionic material and preparation method and application thereof - Google Patents
Ordered pore bionic material and preparation method and application thereof Download PDFInfo
- Publication number
- CN113173778A CN113173778A CN202110377123.7A CN202110377123A CN113173778A CN 113173778 A CN113173778 A CN 113173778A CN 202110377123 A CN202110377123 A CN 202110377123A CN 113173778 A CN113173778 A CN 113173778A
- Authority
- CN
- China
- Prior art keywords
- pore
- ordered pore
- ordered
- bionic material
- bionic
- 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.)
- Pending
Links
- 239000011148 porous material Substances 0.000 title claims abstract description 86
- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 36
- 239000002689 soil Substances 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 17
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 17
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 17
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010453 quartz Substances 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000498 ball milling Methods 0.000 claims abstract description 14
- 229920002749 Bacterial cellulose Polymers 0.000 claims abstract description 11
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000005016 bacterial cellulose Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 230000008014 freezing Effects 0.000 claims abstract description 9
- 238000007710 freezing Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000010433 feldspar Substances 0.000 claims abstract description 6
- 229940072033 potash Drugs 0.000 claims abstract description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000002977 biomimetic material Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000005067 remediation Methods 0.000 claims description 12
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 8
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 6
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 6
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 6
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000007787 solid Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 239000000017 hydrogel Substances 0.000 description 6
- 238000001878 scanning electron micrograph Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/16—Lean materials, e.g. grog, quartz
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/24—Manufacture of porcelain or white ware
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0054—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity the pores being microsized or nanosized
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate or hypophosphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/95—Products characterised by their size, e.g. microceramics
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an ordered pore bionic material and a preparation method and application thereof. The ordered pore bionic material comprises kaolin, potassium feldspar and quartz, and has a directional pore structure, and the pore diameter is 5-160 mu m. The preparation method of the ordered pore bionic material comprises the following steps: 1) mixing kaolin, potash feldspar and quartz, then carrying out ball milling, adding bacterial cellulose and an organic-inorganic composite dispersing agent, and continuing ball milling to obtain ceramic slurry; 2) injecting the ceramic slurry into a mold, and performing freezing molding to obtain a ceramic blank; 3) sintering the ceramic blank to obtain the ordered pore bionic material. The ordered pore bionic material has a structure similar to a plant xylem conduit, is good in chemical stability and repairing effect on heavy metal polluted soil, and can be recycled after being treated by means of ultrasonic cleaning and the like after being used.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to an ordered pore bionic material and a preparation method and application thereof.
Background
Soil is an important component of an ecosystem, and with the rapid development of world economy in recent decades, the soil environment condition is not optimistic, potential threats are caused to public health, and the treatment work of polluted soil is urgent.
At present, the heavy metals are separated from the soil by methods such as chemical leaching, electric remediation, thermal desorption, phytoremediation and the like, so that the remediation of the polluted soil is realized. Chemical leaching refers to leaching to remove heavy metals from soil with water or a suitable solution, but the adverse effect of the leaching agent on the physicochemical properties of soil limits the application. The electric restoration is that voltage is applied to two sides of soil, heavy metal ions are enriched near an electrode under the action of an electric field and are led out. The thermal desorption method can effectively remove volatile heavy metals in soil, but the method has the disadvantages of high energy consumption and difficult recovery of gaseous heavy metals. The phytoremediation technology is to realize the purification of polluted soil by utilizing the functions of enrichment, transfer and the like of the plants on pollutants, and has the advantages of in-situ treatment, low cost, environmental friendliness, landscape beautification and the like, but the phytoremediation technology also has limitations, such as: the super-enriched plants have few varieties, long repair period, difficulty in survival of the plants in the heavily polluted soil and the like.
In conclusion, the existing soil remediation technologies have obvious defects and are difficult to completely meet the requirements of practical application.
Disclosure of Invention
The invention aims to provide an ordered pore bionic material, and a preparation method and application thereof.
The technical scheme adopted by the invention is as follows:
the ordered porous bionic material consists of kaolin, potash feldspar and quartz and has oriented pore structure of 5-160 micron pore size.
Preferably, the mass ratio of the kaolin to the potassium feldspar to the quartz is 50-70: 5-30.
More preferably, the mass ratio of the kaolin to the potassium feldspar to the quartz is 1: 0.5-0.6.
The preparation method of the ordered pore bionic material comprises the following steps:
1) mixing kaolin, potash feldspar and quartz, then carrying out ball milling, adding bacterial cellulose and an organic-inorganic composite dispersing agent, and continuing ball milling to obtain ceramic slurry;
2) injecting the ceramic slurry into a mold, and performing freezing molding to obtain a ceramic blank;
3) sintering the ceramic blank to obtain the ordered pore bionic material.
Preferably, the organic-inorganic composite dispersant in the step 1) is prepared by compounding sodium polyacrylate and at least one of sodium pyrophosphate, sodium tripolyphosphate, trisodium phosphate, sodium dihydrogen phosphate and sodium hexametaphosphate according to a mass ratio of 0.5: 1-2.5: 1.
Preferably, the usage amount of the bacterial cellulose in the step 1) is 1.5-9% of the total mass of the kaolin, the potash feldspar and the quartz.
Preferably, the bacterial cellulose in the step 1) is added in a hydrogel form, and the water content of the bacterial cellulose hydrogel is more than 95%.
Preferably, the amount of the organic-inorganic composite dispersant in the step 1) is 0.3-1.2% of the total mass of the kaolin, the potassium feldspar and the quartz.
Preferably, the solid content of the ceramic slurry in the step 1) is 10-40%.
Preferably, the mold of step 2) is a cylindrical mold.
Preferably, the freezing and forming in the step 2) are carried out at-30 ℃ to-50 ℃.
Preferably, the sintering in step 3) is carried out at 1250 ℃ to 1400 ℃.
Preferably, the sintering of step 3) is performed in an air atmosphere.
The invention has the beneficial effects that: the ordered pore bionic material has a structure similar to a plant xylem conduit, is good in chemical stability and repairing effect on heavy metal polluted soil, and can be recycled after being treated by means of ultrasonic cleaning and the like after being used.
Specifically, the method comprises the following steps:
1) the ordered hole bionic material has a highly ordered directional hole structure, the microstructure of the ordered hole is similar to a plant xylem conduit structure, and compared with a repair device assembled by multi-element fillers, PVC pipes and bottom end accessories, the ordered hole bionic material is more consistent with the bionic concept in structure;
2) the ordered pore bionic material disclosed by the invention is used for carrying out plant bionic in-situ remediation, breaks through the physiological limitation of plants, can be used for the remediation of various heavy metals such as Cu, Zn, Pb, Cr and the like in heavy metal polluted soil, avoids the use of a large amount of chemical reagents in the remediation process, cannot change the original physicochemical property of the soil, is environment-friendly and green and safe in materials, and cannot generate secondary pollution;
3) the ordered pore bionic material has better chemical stability, and the used bionic material can be recycled after being treated by means of ultrasonic cleaning and the like.
Drawings
Figure 1 is a digital photograph of the ordered pore biomimetic material of example 1.
FIG. 2 is a two-dimensional CT image of the cross section of the ordered pore biomimetic material of example 1.
FIG. 3 is an SEM image of a vertical section of the ordered pore biomimetic material of example 1.
FIG. 4 is a graph showing the relationship between porosity and solid content of the ordered pore biomimetic material prepared from the ceramic slurries with different solid contents in examples 1-4.
FIG. 5 is a digital photograph of the ordered pore biomimetic material of example 1 for testing the remediation effect of heavy metal contaminated soil.
Detailed Description
The invention will be further explained and illustrated with reference to specific examples.
Example 1:
the preparation method of the ordered pore bionic material comprises the following steps:
1) 7.15g of kaolin, 3.724g of potassium feldspar and 4.022g of quartz are sieved by a 200-mesh sieve and then added into a ball mill, the speed of the ball mill is adjusted to 350r/min, the ball milling is carried out for 3 hours, then 85g of bacterial cellulose hydrogel (with the water content of 99%), 0.052g of sodium polyacrylate and 0.052g of sodium hexametaphosphate are added, and the ball milling is continued for 3.5 hours to obtain ceramic slurry with the solid content of 15%;
2) slowly injecting the ceramic slurry into a mould which is cylindrical and has the diameter of 3cm and the height of 13.5cm, then placing the mould into a freeze dryer, freezing and molding at-45 ℃, and drying in vacuum to obtain a ceramic blank;
3) and (3) placing the ceramic blank in a muffle furnace, heating the ceramic blank to 1350 ℃ at the speed of 5 ℃/min in the air atmosphere, and preserving the heat for 90min to obtain the ordered pore bionic material (the height is 73.15mm, the diameter is 20.26mm, and the pore diameter is distributed in the range of 120-160 mu m).
The digital photograph of the ordered pore biomimetic material prepared in this example is shown in fig. 1, the two-dimensional CT image of the cross section is shown in fig. 2, and the SEM image of the vertical section is shown in fig. 3.
As can be seen from fig. 1 to 3: the ordered pore bionic material prepared by the embodiment has a layered ordered pore structure with a directionally arranged plant-like xylem conduit structure inside, the pores are uniformly distributed, a bridging structure exists between layers, and the ordered pore bionic material has obvious orientation along the growth direction of ice crystals.
Example 2:
the preparation method of the ordered pore bionic material comprises the following steps:
1) 9.533g of kaolin, 4.965g of potash feldspar and 5.362g of quartz are sieved by a 200-mesh sieve and then added into a ball mill, the speed of the ball mill is adjusted to 350r/min, the ball milling is carried out for 3 hours, then 80g of bacterial cellulose hydrogel (with the water content of 99 percent), 0.07g of sodium polyacrylate and 0.07g of sodium hexametaphosphate are added, and the ball milling is continued for 3.5 hours to obtain ceramic slurry with the solid content of 20 percent;
2) slowly injecting the ceramic slurry into a mould which is cylindrical and has the diameter of 3cm and the height of 13.5cm, then placing the mould into a freeze dryer, freezing and molding at-45 ℃, and drying in vacuum to obtain a ceramic blank;
3) and (3) placing the ceramic blank in a muffle furnace, heating the ceramic blank to 1350 ℃ at the speed of 5 ℃/min in the air atmosphere, and preserving the heat for 90min to obtain the ordered pore bionic material (the height is 73.27mm, the diameter is 20.61mm, and the pore diameter is distributed in the range of 50-80 μm).
Referring to the method of example 1, the two-dimensional CT image and the SEM image of the vertical section of the cross section of the prepared ordered pore biomimetic material were tested, and the results showed that the ordered pore biomimetic material prepared in this example exhibited a layered ordered pore structure of a directionally arranged ligneous conduit structure of the plant-like plant inside, the pores were uniformly distributed, and had an obvious orientation along the ice crystal growth direction, and the pore diameter was smaller than that of the ordered pore biomimetic material of example 1.
Example 3:
the preparation method of the ordered pore bionic material comprises the following steps:
1) 11.917g of kaolin, 6.207g of potassium feldspar and 6.703g of quartz are sieved by a 200-mesh sieve, then are added into a ball mill, the speed of the ball mill is adjusted to 350r/min, the ball milling is carried out for 3 hours, 75g of bacterial cellulose hydrogel (with the water content of 99 percent), 0.087g of sodium polyacrylate and 0.087g of sodium hexametaphosphate are added, and the ball milling is continued for 3.5 hours, so that ceramic slurry with the solid content of 25 percent is obtained;
2) slowly injecting the ceramic slurry into a mould which is cylindrical and has the diameter of 3cm and the height of 13.5cm, then placing the mould into a freeze dryer, freezing and molding at-45 ℃, and drying in vacuum to obtain a ceramic blank;
3) and (3) placing the ceramic blank in a muffle furnace, heating the ceramic blank to 1350 ℃ at the speed of 5 ℃/min in the air atmosphere, and preserving the heat for 90min to obtain the ordered pore bionic material (the height is 73.31mm, the diameter is 20.96mm, and the pore diameter is distributed in the range of 35-70 mu m).
Referring to the method of example 1, the two-dimensional CT image and the SEM image of the vertical section of the cross section of the prepared ordered pore biomimetic material were tested, and the results showed that the ordered pore biomimetic material prepared in this example exhibited a layered ordered pore structure of a directionally arranged ligneous conduit structure of the plant-like plant inside, the pores were uniformly distributed, and had a significant orientation along the ice crystal growth direction, and the degree of order of the pore structure was increased, but the pore diameter was decreased, compared with the ordered pore biomimetic materials of examples 1 and 2.
Example 4:
the preparation method of the ordered pore bionic material comprises the following steps:
1) sieving 14.3g of kaolin, 7.448g of potassium feldspar and 8.044g of quartz by a 200-mesh sieve, adding the mixture into a ball mill, adjusting the speed of the ball mill to 350r/min, carrying out ball milling for 3 hours, adding 70g of bacterial cellulose hydrogel (with the water content of 99%), 0.104g of sodium polyacrylate and 0.104g of sodium hexametaphosphate, and continuing ball milling for 3.5 hours to obtain ceramic slurry with the solid content of 30%;
2) slowly injecting the ceramic slurry into a mould which is cylindrical and has the diameter of 3cm and the height of 13.5cm, then placing the mould into a freeze dryer, freezing and molding at-45 ℃, and drying in vacuum to obtain a ceramic blank;
3) and (3) placing the ceramic blank in a muffle furnace, heating the ceramic blank to 1350 ℃ at the speed of 5 ℃/min in the air atmosphere, and preserving the heat for 90min to obtain the ordered pore bionic material (the height is 73.5mm, the diameter is 21.02mm, and the pore diameter is distributed in the range of 5-40 mu m).
With reference to the method in example 1, a two-dimensional CT image and an SEM image of a vertical section of the cross section of the prepared ordered pore biomimetic material were tested, and the results showed that the interior of the ordered pore biomimetic material prepared in this example exhibited a layered ordered pore structure of a directionally arranged ligneous conduit-like structure of a plant, the pore structure had an obvious orientation along the growth direction of ice crystals, the order of the pore structure was increased compared with the ordered pore biomimetic materials of examples 1 to 3, but the pore wall was thicker, the pore diameter was decreased, and a slight pore blocking phenomenon was present.
And (3) performance testing:
1) the relationship graph of porosity and solid content of the ordered pore bionic material prepared from the ceramic slurry with different solid contents in the examples 1-4 is shown in FIG. 4.
As can be seen from fig. 4: with the increase of the solid content of the ceramic slurry, the porosity of the prepared ordered pore bionic material is reduced.
2) And (3) testing the repairing effect of the ordered pore bionic material on the heavy metal contaminated soil: the ordered pore bionic materials of embodiments 1-4 are respectively inserted into Cu composite contaminated soil with water content of 50%, foam sheets are covered on the periphery of the ordered pore bionic materials, so that the soil forms a closed environment (a digital photo of the ordered pore bionic materials for testing the heavy metal contaminated soil remediation effect is shown in figure 5), after 16h remediation, the Cu content of the remediated contaminated soil is detected by a aqua regia digestion method and an inductively coupled plasma emission spectrometer (ICP), and the testing results are shown in the following table:
TABLE 1 results of testing the remediation effect of ordered pore bionic materials on heavy metal contaminated soil
| Test items | Cu content reduction value (mg/kg) | Cu content reduction ratio (%) |
| Example 1 | 90 | 12.81 |
| Example 2 | 76 | 10.82 |
| Example 3 | 64 | 9.11 |
| Example 4 | 45 | 6.41 |
As can be seen from Table 1: heavy metal contaminated soil is through all decline of Cu content after restoreing, mainly because the hosepipe moves during heavy metal migrates the orderly hole of bionic material from soil, forms continuous water column in the orderly hole through capillary force, and material top water evaporation produces negative pressure (tension), transmits the bottom through continuous water column to reinforcing bottom is to the absorption of moisture and heavy metal, reduces the content of Cu in the soil.
According to the method, the ordered pore bionic material with the best repairing effect is inserted into Zn, Pb and Cr composite polluted soil with the water content of 50% for testing, the reduction rates of the obtained Zn, Pb and Cr contents are 3.69%, 4.62% and 32.62% in sequence, then the used ordered pore bionic material is cleaned and recycled for 5 times through ultrasonic waves, and the polluted soil is tested, so that the reduction rates of the Cu contents are 12.81%, 11.88%, 10.32%, 8.92% and 8.37% in sequence, therefore, the ordered pore bionic material has good cyclic regeneration performance.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An ordered pore bionic material is characterized in that: the ordered pore bionic material comprises the components of kaolin, potassium feldspar and quartz; the ordered porous bionic material has a directional pore structure, and the pore diameter is 5-160 mu m.
2. The ordered pore biomimetic material of claim 1, wherein: the mass ratio of the kaolin to the potassium feldspar to the quartz is 50-70: 5-30.
3. The method for preparing the ordered pore bionic material of claim 1 or 2, which is characterized by comprising the following steps:
1) mixing kaolin, potash feldspar and quartz, then carrying out ball milling, adding bacterial cellulose and an organic-inorganic composite dispersing agent, and continuing ball milling to obtain ceramic slurry;
2) injecting the ceramic slurry into a mold, and performing freezing molding to obtain a ceramic blank;
3) sintering the ceramic blank to obtain the ordered pore bionic material.
4. The method for preparing the ordered pore bionic material according to claim 3, which is characterized in that: the organic-inorganic composite dispersing agent in the step 1) is prepared by compounding sodium polyacrylate and at least one of sodium pyrophosphate, sodium tripolyphosphate, trisodium phosphate, sodium dihydrogen phosphate and sodium hexametaphosphate according to the mass ratio of 0.5: 1-2.5: 1.
5. The method for preparing the ordered pore bionic material according to claim 3 or 4, which is characterized in that: the dosage of the bacterial cellulose in the step 1) is 1.5-9% of the total mass of the kaolin, the potassium feldspar and the quartz.
6. The method for preparing the ordered pore bionic material according to claim 3 or 4, which is characterized in that: the dosage of the organic-inorganic composite dispersant in the step 1) is 0.3-1.2% of the total mass of the kaolin, the potassium feldspar and the quartz.
7. The method for preparing the ordered pore bionic material according to claim 3, which is characterized in that: and 2) the mould is a cylindrical mould.
8. The method for preparing the ordered pore biomimetic material according to any one of claims 3, 4 and 7, characterized in that: and 2) performing the freezing molding at the temperature of between 30 ℃ below zero and 50 ℃ below zero.
9. The method for preparing the ordered pore biomimetic material according to any one of claims 3, 4 and 7, characterized in that: the sintering in the step 3) is carried out at 1250-1400 ℃.
10. Use of the ordered pore biomimetic material of claim 1 or 2 as a heavy metal contaminated soil remediation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110377123.7A CN113173778A (en) | 2021-04-08 | 2021-04-08 | Ordered pore bionic material and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110377123.7A CN113173778A (en) | 2021-04-08 | 2021-04-08 | Ordered pore bionic material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113173778A true CN113173778A (en) | 2021-07-27 |
Family
ID=76924584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110377123.7A Pending CN113173778A (en) | 2021-04-08 | 2021-04-08 | Ordered pore bionic material and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113173778A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103736719A (en) * | 2014-01-02 | 2014-04-23 | 重庆绿色智能技术研究院 | In-situ self-sustaining contaminated soil restoring device based on plant bionics and method |
| CN104016657A (en) * | 2013-03-01 | 2014-09-03 | 格丰科技材料有限公司 | Ultrahigh specific surface area ceramic material and preparation method thereof |
| CN106269849A (en) * | 2016-09-22 | 2017-01-04 | 北京新源环境有限公司 | A kind of plant bionic and the method for plant combined repairing polluted soil |
| CN111533531A (en) * | 2020-04-13 | 2020-08-14 | 华南理工大学 | Porous mullite and preparation method thereof |
-
2021
- 2021-04-08 CN CN202110377123.7A patent/CN113173778A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016657A (en) * | 2013-03-01 | 2014-09-03 | 格丰科技材料有限公司 | Ultrahigh specific surface area ceramic material and preparation method thereof |
| CN103736719A (en) * | 2014-01-02 | 2014-04-23 | 重庆绿色智能技术研究院 | In-situ self-sustaining contaminated soil restoring device based on plant bionics and method |
| CN106269849A (en) * | 2016-09-22 | 2017-01-04 | 北京新源环境有限公司 | A kind of plant bionic and the method for plant combined repairing polluted soil |
| CN111533531A (en) * | 2020-04-13 | 2020-08-14 | 华南理工大学 | Porous mullite and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 聂道伟 编著: "《千万个科学故事（化学故事） 上》", 31 January 2003, 时代文艺出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zou et al. | Structure and adsorption properties of sewage sludge-derived carbon with removal of inorganic impurities and high porosity | |
| Mahar et al. | Fabrication and characterization of MXene/carbon composite-based nanofibers (MXene/CNFs) membrane: An efficient adsorbent material for removal of Pb+ 2 and As+ 3 ions from water | |
| CN102908979B (en) | Preparation method of efficient adsorbent porous magnesium oxide | |
| Shahzad et al. | Synthesis and characterization of alumina-CNT membrane for cadmium removal from aqueous solution | |
| CN104194796B (en) | A kind of soil remediation material based on clay and apatite and preparation method thereof | |
| CN109908865A (en) | A kind of preparation method and applications of pig bone and bamboo wood copyrolysis charcoal | |
| CN110833817A (en) | Dry synthesis method of rice hull biochar loaded nano-iron material | |
| Zang et al. | Hollow carbon fiber sponges from crude catkins: an ultralow cost absorbent for oils and organic solvents | |
| CN104607144A (en) | Structure self-growing aqueous phase phosphate radical adsorbing material and preparation method and application thereof | |
| CN102941060B (en) | Manganese oxide and infusorial earth composite adsorbent for treating lead-containing wastewater and preparation method | |
| CN105329883A (en) | Porous graphene preparation method | |
| Gao et al. | Zeolite–carbon composites prepared from industrial wastes:(I) Effects of processing parameters | |
| Onsri et al. | Novel magnetically interconnected micro/macroporous structure of monolithic porous carbon adsorbent derived from sodium alginate and wasted black liquor and its adsorption performance | |
| CN109467073B (en) | Preparation method and application of porous carbon | |
| CN104888708B (en) | Corn scytoblastema three-dimensional multistage pore structure carbon material and preparation method thereof | |
| Shan et al. | Effect of surface modification of activated carbon on its adsorption capacity for NH3 | |
| CN113173778A (en) | Ordered pore bionic material and preparation method and application thereof | |
| CN103537258B (en) | A kind of preparation method of magnetic clay nanocomposites | |
| CN110482544B (en) | Activated carbon and preparation method and application thereof | |
| CN110327887B (en) | Al-MOFS/charcoal composite material and preparation method and application thereof | |
| CN107686156A (en) | A kind of Fenton methods of efficient degradation organic pollutants | |
| CN113102755B (en) | Intermetallic compound-carbon nanotube porous composite material and preparation method thereof | |
| Qian et al. | Preparation of biomorphic TiO2 ceramics from rattan templates | |
| KR102128160B1 (en) | Porous carbon-metal oxide composite for removal of heavy metal ions and manufacturing method thereof | |
| CN114452934B (en) | Porous carbon material based on eupatorium adenophorum, preparation method and application thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210727 |