CN111686697A - Preparation method of ginkgo leaf fiber composite adsorption material - Google Patents
Preparation method of ginkgo leaf fiber composite adsorption material Download PDFInfo
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- CN111686697A CN111686697A CN202010586223.6A CN202010586223A CN111686697A CN 111686697 A CN111686697 A CN 111686697A CN 202010586223 A CN202010586223 A CN 202010586223A CN 111686697 A CN111686697 A CN 111686697A
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- ginkgo leaf
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- 235000008100 Ginkgo biloba Nutrition 0.000 title claims abstract description 61
- 241000218628 Ginkgo Species 0.000 title claims abstract description 53
- 235000011201 Ginkgo Nutrition 0.000 title claims abstract description 53
- 239000000835 fiber Substances 0.000 title claims abstract description 46
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 title claims abstract description 30
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims abstract description 20
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 14
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229960001124 trientine Drugs 0.000 claims abstract description 10
- 238000004108 freeze drying Methods 0.000 claims abstract description 8
- 229940079877 pyrogallol Drugs 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- 239000000243 solution Substances 0.000 claims description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 9
- 150000002500 ions Chemical class 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000004061 bleaching Methods 0.000 abstract 1
- 238000010411 cooking Methods 0.000 abstract 1
- 244000194101 Ginkgo biloba Species 0.000 description 8
- 239000000975 dye Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910001430 chromium ion Inorganic materials 0.000 description 4
- IQFVPQOLBLOTPF-HKXUKFGYSA-L congo red Chemical compound [Na+].[Na+].C1=CC=CC2=C(N)C(/N=N/C3=CC=C(C=C3)C3=CC=C(C=C3)/N=N/C3=C(C4=CC=CC=C4C(=C3)S([O-])(=O)=O)N)=CC(S([O-])(=O)=O)=C21 IQFVPQOLBLOTPF-HKXUKFGYSA-L 0.000 description 4
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 4
- 238000003911 water pollution Methods 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000002156 adsorbate Substances 0.000 description 2
- 229960003638 dopamine Drugs 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 241000218791 Ginkgoaceae Species 0.000 description 1
- 241000237536 Mytilus edulis Species 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003592 biomimetic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229930003935 flavonoid Natural products 0.000 description 1
- 150000002215 flavonoids Chemical class 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 235000020638 mussel Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- -1 terpene triesters Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- 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
- C02F2101/30—Organic compounds
Abstract
The invention discloses a preparation method of a ginkgo leaf fiber composite adsorption material. The ginkgo leaf fiber composite adsorbing material comprises ginkgo leaf fibers, catechol (or pyrogallol or a mixture thereof) and triethylene tetramine (or tetraethylenepentamine or a mixture thereof). The preparation steps of the composite material are as follows: dispersing folium Ginkgo fiber prepared by alkali cooking, acid washing, bleaching, separating, washing, and drying in water solution (pH = 8-9), ultrasonic treating, sequentially adding catechol (or pyrogallol or mixture thereof), and triethylene tetramine (or tetraethylene pentamine or mixture thereof), and stirring at room temperature. And after the reaction is finished, centrifuging, washing, and freeze-drying to finally obtain the ginkgo leaf fiber composite adsorbing material. The preparation method has the advantages of wide raw materials, controllable process, good repeatability, low cost and convenient popularization and use. The prepared ginkgo leaf fiber composite adsorbing material has good adsorption performance, can be applied to adsorption of heavy metal ions and dye micromolecules, and has wide practical application prospect.
Description
Technical Field
The invention relates to the field of preparation of adsorbents, in particular to a preparation method of a ginkgo leaf adsorbing material for adsorbing heavy metal ions and organic dyes, and belongs to the technical field of functional polymer materials.
Background
With the development of industry and the progress of science and technology, the chemical industry is continuously developing, and environmental problems, such as ecological pollution, energy shortage, resource exhaustion, especially waste and pollution of water resources, become more and more prominent. The problem of water pollution is not inconstant, the generation factors of the water pollution are mainly heavy metal ion pollution and organic dye pollution, the water pollution has toxicity which is difficult to degrade for a long time, and the recycling application of drinking water is seriously damaged, so that the water pollution becomes one of important factors threatening human health.
In view of the harm of heavy metal ions and organic dyes to organisms and the environment, a plurality of methods are applied to treating polluted wastewater or recycling heavy metals. The current common wastewater treatment methods, such as neutralization method, reduction method, membrane separation method, precipitation method and the like, face the problems of small single treatment capacity, long treatment period, poor treatment effect, high treatment cost, secondary pollution and the like. In the adsorption method, various adsorbents are used to concentrate an adsorbate on an adsorbent by an interaction force between the material and the adsorbate. Compared with other traditional modes, the adsorption method can be flexibly designed and used, and has the advantages of simple operation and controllable implementation.
Based on the biomimetic polymerization mechanism of mussels and the practical application of dopamine, the polyphenylamine material with low cost is widely concerned. Similar to dopamine polymerization, catechol and polyamino compounds are subjected to polycondensation to prepare polyphenylamine with adsorption and surface modification capabilities, and heavy metal ions and organic dyes can be effectively adsorbed. By replacing polyamine and pyrocatechol which participate in the reaction, materials with different hydrophilic and hydrophobic properties can be obtained, and then the materials are grafted with other materials, so that the other materials have no functions.
Folium Ginkgo is dry leaf of Ginkgo biloba of Ginkgoaceae. The ginkgo leaf is 3-12 cm long, 5-15 cm wide and the wedge-shaped petiole of the leaf base is 2-8 cm long. The leaves are multi-corrugated, with the intact one being fan-shaped, the upper edge presenting an irregular, undulating curvature, with some recesses in the middle. Has two fork-shaped parallel veins, is thin and dense, smooth and hairless, and is extremely easy to tear longitudinally. Folium Ginkgo contains abundant flavonoids and terpene triesters, and the extract is a good natural antibacterial agent, and has been applied in food, medicine, health product, daily chemical industry, etc. However, the application of ginkgo leaves is still limited, and thus, further research and development are required for the application of ginkgo leaves.
Disclosure of Invention
In order to overcome the defects and problems in the prior art, the invention aims to provide a preparation method of a ginkgo leaf fiber composite adsorption material, which has the advantages of wide raw materials, controllable process, good repeatability, low cost and convenience in popularization and use, and can be widely applied to the field of adsorption material preparation. The prepared ginkgo leaf fiber composite adsorbing material has good performances of adsorbing heavy metal ions and organic pollutants, and has wide application prospect.
In order to realize the purpose of the invention, the following technical scheme is provided:
(1) boiling a certain mass of ginkgo leaves with a sodium hydroxide solution (4 h, 98 ℃), washing with water, pickling with a sulfuric acid solution (20 min), washing with water, oxidizing with hydrogen peroxide (4 h, 80 ℃), washing with water, treating, separating, washing and freeze-drying the obtained product for later use. (2) Adding a certain mass of ginkgo biloba leaves into a three-mouth bottle filled with 100mL of aqueous solution (pH = 8-9) and carrying out ultrasonic treatment until the ginkgo biloba leaves are uniformly dispersed. And (3) sequentially adding a certain mass of catechol (or pyrogallol or a mixture thereof) and triethylene tetramine (or tetraethylenepentamine or a mixture thereof) into the solution, and stirring and reacting for 72 hours at room temperature. And after the reaction is finished, centrifugally washing, and freeze-drying to finally obtain the ginkgo leaf fiber composite adsorbing material.
Further, the concentration of the sodium hydroxide is 5-12 wt%. Preferably 10 wt%; the concentration of the sulfuric acid solution is 1-3 g/L, preferably 1 g/L.
Furthermore, the times of the sodium hydroxide solution boiling and the sulfuric acid pickling are 1-3 times, and preferably 2 times.
Further, the preparation method of the ginkgo leaf fiber composite adsorbing material is characterized in that the dosage of the ginkgo leaf fibers is 0.2-10 g, and preferably 0.5-2.2 g.
Further, the mass ratio of the ginkgo leaf fibers to the triethylene tetramine is 15-3: 1, preferably 5: 1; the mass ratio of the ginkgo leaf fibers to the tetraethylenepentamine is 14-2.5: 1, and preferably 4: 1.
Further, the preparation method of the ginkgo leaf fiber composite adsorbing material is characterized in that the molar ratio of catechol (or pyrogallol or a mixture thereof) to triethylene tetramine (or tetraethylenepentamine or a mixture thereof) is 1: 1-2.5, and 1:1.2 is preferable.
Further, the application of the ginkgo leaf fiber composite adsorbing material is characterized in that the ginkgo leaf fiber composite adsorbing material is used for adsorbing heavy metal ions and organic dyes.
The invention has the following beneficial effects:
(a) the ginkgo leaf fiber composite adsorbing material has the advantages of wide preparation raw materials, controllable process, good repeatability, low cost and strong operability, and the prepared ginkgo leaf fiber composite material has stable performance.
(b) The ginkgo leaf fiber composite adsorbing material has good performances of adsorbing heavy metal ions and organic pollutants, and has wide application prospect.
Detailed Description
The present invention is further illustrated by the following specific embodiments. The following examples are intended to illustrate the invention without further limiting it. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
50g of ginkgo leaf is fed, sodium hydroxide solution (5 wt%) is boiled (4 h, 98 ℃), washed with water, washed with sulfuric acid solution (1 g/L, 20 min), washed with water, oxidized with hydrogen peroxide solution (2 g/L) (4 h, 80 ℃) and washed with water. The chemically treated product was washed by centrifugation and freeze-dried, giving a yield of 8.3%. 0.5g of ginkgo biloba leaves fiber is added into a three-necked flask containing 100mL of aqueous solution (pH = 8-9) and is ultrasonically treated until the dispersion is uniform, then 0.06g of pyrogallol and 0.1g of tetraethylenepentamine are added in sequence, and the reaction is stirred at room temperature for 72 hours. After the reaction is finished, centrifugally washing, and freeze-drying to obtain the ginkgo leaf fiber composite material.
The adsorption capacity of the ginkgo leaf fiber composite material prepared by the method on Congo red solution is 310mg/g, and the adsorption capacity on chromium ion solution is 110 mg/g.
Example 2
50g of ginkgo leaf is fed, sodium hydroxide solution (10 wt%) is boiled (4 h, 98 ℃), washed with water, washed with sulfuric acid solution (1 g/L, 20 min), washed with water, oxidized with hydrogen peroxide solution (2 g/L) (4 h, 80 ℃), washed with water, and the product after chemical treatment is centrifugally washed and freeze-dried, so that the yield is 13.7%. 1.0g of ginkgo biloba leaf fiber is added into a three-necked flask containing 100mL of aqueous solution (pH = 8-9) and ultrasonically treated until the dispersion is uniform, then 0.13g of catechol and 0.2g of triethylene tetramine are added in sequence, and the mixture is stirred and reacted for 72 hours at room temperature. After the reaction is finished, centrifugally washing, and freeze-drying to obtain the ginkgo leaf fiber composite material.
The adsorption capacity of the ginkgo leaf fiber composite material prepared by the method on Congo red solution is 328mg/g, and the adsorption capacity on chromium ion solution is 115 mg/g.
Example 3
50g of ginkgo leaf is fed, sodium hydroxide solution (10 wt%) is boiled (4 h, 98 ℃), water washing is carried out, sulfuric acid solution pickling is carried out (1 g/L, 20 min), water washing is carried out, sodium hydroxide solution is boiled (4 h, 98 ℃), water washing is carried out, sulfuric acid solution pickling is carried out (20 min), hydrogen peroxide solution (2 g/L) is oxidized (4 h, 80 ℃), water washing is carried out, the product obtained after chemical treatment is centrifugally washed and freeze-dried, and the yield is 16%. Adding 2.2g of ginkgo biloba leaf fibers into a three-necked flask containing 100mL of aqueous solution (pH = 8-9), performing ultrasonic treatment until the ginkgo biloba leaf fibers are uniformly dispersed, then adding 0.27g of catechol and 0.44g of triethylene tetramine in sequence, and stirring and reacting for 72 hours at room temperature. After the reaction is finished, centrifugally washing, and freeze-drying to obtain the ginkgo leaf fiber composite material.
The adsorption capacity of the ginkgo leaf fiber composite material prepared by the method on Congo red solution is 350 mg/g. The adsorption capacity to the chromium ion solution was 140 mg/g.
Example 4
50g of ginkgo leaf is fed, sodium hydroxide solution (10 wt%) is boiled (4 h, 98 ℃), water washing is carried out, sulfuric acid solution pickling is carried out (1 g/L, 20 min), water washing is carried out, sodium hydroxide solution is boiled (4 h, 98 ℃), water washing is carried out, sulfuric acid solution pickling is carried out (20 min), hydrogen peroxide solution (2 g/L) is oxidized (4 h, 80 ℃), water washing is carried out, the product obtained after chemical treatment is centrifugally washed and freeze-dried, and the yield is 16%. 1.5g of ginkgo biloba leaves fiber is added into a three-necked flask containing 100mL of aqueous solution (pH = 8-9) and is ultrasonically treated until the dispersion is uniform, then 0.21g of pyrogallol and 0.38g of tetraethylenepentamine are added in sequence, and the mixture is stirred and reacted for 72 hours at room temperature. After the reaction is finished, centrifugally washing, and freeze-drying to obtain the ginkgo leaf fiber composite material.
The adsorption capacity of the ginkgo leaf fiber composite material prepared by the method on the Congo red solution is 342 mg/g. The adsorption capacity to the chromium ion solution was 129 mg/g.
Claims (6)
1. A preparation method of a ginkgo leaf fiber composite adsorption material is characterized by comprising the following steps:
(1) boiling a certain mass of ginkgo leaves with a sodium hydroxide solution, washing with water, pickling with a sulfuric acid solution, washing with water, oxidizing with hydrogen peroxide, washing with water, and separating, washing and drying the obtained product for later use;
(2) adding a certain mass of ginkgo leaf fibers into a three-necked bottle filled with 100mL of aqueous solution (pH = 8-9) and carrying out ultrasonic treatment until the ginkgo leaf fibers are uniformly dispersed; sequentially adding a certain mass of catechol (or pyrogallol or a mixture thereof) and triethylene tetramine (or tetraethylenepentamine or a mixture thereof) into the solution, stirring at room temperature for reaction for 72 hours, and after the reaction is finished, centrifugally washing, and freeze-drying to finally obtain the ginkgo leaf fiber composite adsorbing material.
2. The preparation method of the ginkgo leaf fiber composite adsorbing material as claimed in claim 1, wherein the concentration of the sodium hydroxide is 5-12 wt%, preferably 10wt%, and the concentration of the sulfuric acid solution is 1-3 g/L, preferably 1 g/L.
3. The method for preparing the ginkgo leaf fiber composite adsorbing material as claimed in claim 1, wherein the number of times of the sodium hydroxide solution boiling and the sulfuric acid pickling is 1-3 times, preferably 2 times.
4. The preparation method of the ginkgo leaf fiber composite adsorbing material as claimed in claim 1, wherein the amount of the ginkgo leaf fibers is 0.2-10 g, preferably 0.5-2.2 g.
5. The preparation method of the ginkgo leaf fiber composite adsorbing material as claimed in claim 1, wherein the mass ratio of the ginkgo leaf fibers to the triethylene tetramine is 15-3: 1, preferably 5: 1; the mass ratio of the ginkgo leaf fibers to the tetraethylenepentamine is 14-2.5: 1, and preferably 4: 1.
6. The preparation method of the ginkgo leaf fiber composite adsorbing material as claimed in claim 1, wherein the molar ratio of catechol (or pyrogallol or a mixture thereof) to triethylene tetramine (or tetraethylenepentamine or a mixture thereof) is 1: 1-2.5, preferably 1: 1.2.
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| CN202010586223.6A CN111686697A (en) | 2020-06-24 | 2020-06-24 | Preparation method of ginkgo leaf fiber composite adsorption material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171162A1 (en) * | 2001-03-22 | 2002-11-21 | Izhar Halahmi | Strong durable low cost composite materials |
| CN106902790A (en) * | 2017-04-08 | 2017-06-30 | 西南石油大学 | A kind of high-efficiency adsorbent based on ginkgo leaf and preparation method thereof |
| CN107335409A (en) * | 2017-08-29 | 2017-11-10 | 齐鲁工业大学 | A kind of method that gingko episperm prepares sorbing material |
| CN107744801A (en) * | 2017-11-23 | 2018-03-02 | 齐鲁工业大学 | A kind of poly- phenol amine sorbing material of new lignin-base and preparation method |
| CN109627345A (en) * | 2018-12-06 | 2019-04-16 | 广西大学 | A kind of preparation method and application of sugarcane top hydrophobically modified nano-cellulose |
-
2020
- 2020-06-24 CN CN202010586223.6A patent/CN111686697A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171162A1 (en) * | 2001-03-22 | 2002-11-21 | Izhar Halahmi | Strong durable low cost composite materials |
| CN106902790A (en) * | 2017-04-08 | 2017-06-30 | 西南石油大学 | A kind of high-efficiency adsorbent based on ginkgo leaf and preparation method thereof |
| CN107335409A (en) * | 2017-08-29 | 2017-11-10 | 齐鲁工业大学 | A kind of method that gingko episperm prepares sorbing material |
| CN107744801A (en) * | 2017-11-23 | 2018-03-02 | 齐鲁工业大学 | A kind of poly- phenol amine sorbing material of new lignin-base and preparation method |
| CN109627345A (en) * | 2018-12-06 | 2019-04-16 | 广西大学 | A kind of preparation method and application of sugarcane top hydrophobically modified nano-cellulose |
Non-Patent Citations (1)
| Title |
|---|
| TAO HU等: "Toxic Cr removal from aqueous media using catechol-amine copolymer coating onto as-prepared cellulose", 《CARBOHYDRATE POLYMERS》 * |
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