CN115404696B - Dopamine quinone fiber and preparation method, application and application method thereof - Google Patents
Dopamine quinone fiber and preparation method, application and application method thereof Download PDFInfo
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- CN115404696B CN115404696B CN202110579853.5A CN202110579853A CN115404696B CN 115404696 B CN115404696 B CN 115404696B CN 202110579853 A CN202110579853 A CN 202110579853A CN 115404696 B CN115404696 B CN 115404696B
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- quinone
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- 239000000835 fiber Substances 0.000 title claims abstract description 106
- PQPXZWUZIOASKS-UHFFFAOYSA-N dopaminoquinone Chemical compound NCCC1=CC(=O)C(=O)C=C1 PQPXZWUZIOASKS-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- 238000001179 sorption measurement Methods 0.000 claims abstract description 45
- 229960000686 benzalkonium chloride Drugs 0.000 claims abstract description 34
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920002972 Acrylic fiber Polymers 0.000 claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229960001149 dopamine hydrochloride Drugs 0.000 claims abstract description 26
- 239000003093 cationic surfactant Substances 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 24
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 13
- 230000003197 catalytic effect Effects 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 13
- 239000001569 carbon dioxide Substances 0.000 claims description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000000269 nucleophilic effect Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 5
- RNHDAKUGFHSZEV-UHFFFAOYSA-N 1,4-dioxane;hydrate Chemical compound O.C1COCCO1 RNHDAKUGFHSZEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical group [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 41
- 201000006292 polyarteritis nodosa Diseases 0.000 description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 230000004584 weight gain Effects 0.000 description 13
- 235000019786 weight gain Nutrition 0.000 description 13
- 239000012153 distilled water Substances 0.000 description 8
- 238000001291 vacuum drying Methods 0.000 description 8
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- -1 phenoxy anions Chemical class 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- SXPWTBGAZSPLHA-UHFFFAOYSA-M cetalkonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 SXPWTBGAZSPLHA-UHFFFAOYSA-M 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- KHSLHYAUZSPBIU-UHFFFAOYSA-M benzododecinium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 KHSLHYAUZSPBIU-UHFFFAOYSA-M 0.000 description 2
- HTZCNXWZYVXIMZ-UHFFFAOYSA-M benzyl(triethyl)azanium;chloride Chemical compound [Cl-].CC[N+](CC)(CC)CC1=CC=CC=C1 HTZCNXWZYVXIMZ-UHFFFAOYSA-M 0.000 description 2
- KXHPPCXNWTUNSB-UHFFFAOYSA-M benzyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1=CC=CC=C1 KXHPPCXNWTUNSB-UHFFFAOYSA-M 0.000 description 2
- PXFDQFDPXWHEEP-UHFFFAOYSA-M benzyl-dimethyl-octylazanium;chloride Chemical compound [Cl-].CCCCCCCC[N+](C)(C)CC1=CC=CC=C1 PXFDQFDPXWHEEP-UHFFFAOYSA-M 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 229960003638 dopamine Drugs 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- GAJBPZXIKZXTCG-VIFPVBQESA-N (2s)-2-amino-3-[4-(azidomethyl)phenyl]propanoic acid Chemical compound OC(=O)[C@@H](N)CC1=CC=C(CN=[N+]=[N-])C=C1 GAJBPZXIKZXTCG-VIFPVBQESA-N 0.000 description 1
- WOAHJDHKFWSLKE-UHFFFAOYSA-N 1,2-benzoquinone Chemical compound O=C1C=CC=CC1=O WOAHJDHKFWSLKE-UHFFFAOYSA-N 0.000 description 1
- AHMIDUVKSGCHAU-UHFFFAOYSA-N Dopaquinone Natural products OC(=O)C(N)CC1=CC(=O)C(=O)C=C1 AHMIDUVKSGCHAU-UHFFFAOYSA-N 0.000 description 1
- AHMIDUVKSGCHAU-LURJTMIESA-N L-dopaquinone Chemical compound [O-]C(=O)[C@@H]([NH3+])CC1=CC(=O)C(=O)C=C1 AHMIDUVKSGCHAU-LURJTMIESA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229960000228 cetalkonium chloride Drugs 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002816 fuel additive Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002638 heterogeneous catalyst Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001817 pituitary effect Effects 0.000 description 1
- 239000003880 polar aprotic solvent Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
-
- 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
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28023—Fibres or filaments
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
-
- B01J35/58—
-
- 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
-
- 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
- C02F2101/36—Organic compounds containing halogen
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
- D06M2101/28—Acrylonitrile; Methacrylonitrile
Abstract
The invention is applicable to the technical field of materials, and provides a dopamine quinone fiber, and a preparation method, an application and an application method thereof, wherein the dopamine quinone fiber has a structural general formula as follows:the dopamine quinone fiber obtained by carrying dopamine quinone on the surface of the acrylic fiber through the reaction of the acrylic fiber and the dopamine hydrochloride is a high-efficiency adsorbent for removing the cationic surfactant, and is also a catalyst for converting CO by recycling pollutants 2 Can realize the secondary utilization of the benzalkonium chloride pollutant and CO under mild conditions 2 The catalyst is converted into chemical products, the yield of more than 90 percent can be obtained under the conditions of low temperature and low pressure only by using the catalyst consumption of 0.8mol percent, and the catalyst has stronger adsorption capacity and higher catalytic reaction activity, is more environment-friendly in reaction, and has wider application range and more resource saving.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a dopamine quinone fiber and a preparation method, application and an application method thereof.
Background
In sustainable chemistry and engineering, environmental pollution and energy shortage have become two major problems, and many efforts have been addressed. To solve these problems, chemists have developed a number of novel materials and exhibit excellent adsorption or catalytic capabilities.
Benzalkonium chloride (DDBAC) is a common cationic surfactant widely used as a disinfectant in hospitals, food processing industry and personal care products, and is finally discharged into water environments to not only contaminate groundwater but also further induce human pituitary (GH) 3 ) Toxic mutation of cells occurs. Various methods have been reported in the literature for the removal of cationic surfactants from simulated or actual sewage. The adsorption method has the advantages of simplicity, convenience and economy, so that the method has wider applicability, and particularly the loaded adsorbent hardly has secondary pollution and is more concerned by the small molecular adsorbent. In recent years, various materials have been investigated as carriers for adsorbents, including zeolites, silica, graphene, composites, magnetic Fe 3 O 4 And an organic polymer. However, they have a series of problems such as high cost, poor adsorption capacity, difficulty in preparation, and the like. Therefore, the preparation of the efficient heterogeneous adsorbent and the further realization of green application accords with the green development concept and has higher research value.
In addition, the greenhouse effect has become one of the global climate problems, and so far, researchers have mainly reduced CO from sources 2 Emissions and fixed conversion of pollutant emissions CO 2 Two aspects treat the greenhouse effect. Of these, the most practical CO 2 The immobilization process is cyclization with epoxides to form cyclic carbonates which are useful as polar aprotic solvents, fuel additives and industrial feedstocks for polycarbonates or isocyanates. The high-efficiency catalyst is critical to the conversion, can avoid the reaction under the high-temperature and high-pressure condition, and achieves the aim of safe production.
However, the existing adsorbents and catalysts have the problems of single function and high resource consumption.
Disclosure of Invention
The embodiment of the invention aims to provide dopamine quinone fibers and aims to solve the problems of single function and high resource consumption of the existing adsorbent and catalyst.
The embodiment of the invention is realized in such a way that the structural general formula of the dopamine quinone fiber is as follows:
another object of the embodiment of the present invention is a method for preparing a dopamine quinone fiber, comprising:
adding acrylic fiber, dopamine hydrochloride, strong alkali weak acid salt, water and 1, 4-dioxane into a reaction container, refluxing for 17-20 hours under nitrogen protection at 80-120 ℃, then blowing air or oxygen for reaction for 20-40 min, and washing and drying after the reaction is finished to obtain the acrylic fiber/dopamine hydrochloride composite material.
Another object of the embodiment of the invention is to use the dopamine quinone fiber in adsorbing cationic surfactant.
Another object of an embodiment of the invention is the use of said dopamine quinone fiber for the catalytic conversion of carbon dioxide.
Another object of the embodiment of the present invention is to provide a method for applying the dopamine quinone fiber in catalytic conversion of carbon dioxide, including:
adsorbing benzalkonium chloride by utilizing nucleophilic attack reaction of chloride ions on the dopamine quinone fibers to obtain a fiber catalyst;
and placing the epoxy compound and the fiber catalyst in a reaction container, and introducing carbon dioxide to perform catalytic conversion reaction to obtain the cyclic carbonate.
The dopamine quinone fiber obtained by carrying dopamine quinone on the surface of acrylic fiber through the reaction of acrylic fiber and dopamine hydrochloride serving as raw materials is an efficient adsorbent for removing cationic surfactant, and is also used for catalytically converting CO by recycling pollutants 2 Can realize the effect of benzalkonium chloride di-pollution under mild conditionSecondary utilization and CO 2 The catalyst is converted into chemical products, the yield of more than 90 percent can be obtained under the conditions of low temperature and low pressure only by using the catalyst consumption of 0.8mol percent, and the catalyst has stronger adsorption capacity and higher catalytic reaction activity, is more environment-friendly in reaction, and has wider application range and more resource saving.
Drawings
FIG. 1 is a graph of the adsorption of benzalkonium chloride by differently weighted dopamine quinone fibers provided by an embodiment of the present invention;
FIG. 2 is a scanning electron microscope image of acrylic fiber and dopamine quinone fiber provided by the embodiment of the invention;
FIG. 3 is an FT-IR diagram of a dopamine quinone fiber provided by an embodiment of the invention;
fig. 4 is a bar graph of adsorption selectivity of dopamine quinone fibers to cationic surfactant provided in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
To date, it has not been developed that a particular material can continue to be applied as an environmentally friendly and energy science-friendly in situ catalyst after adsorbing environmental contaminants, possibly due to complex adsorption processes or difficult control of the surface properties of the material. Although some in situ prepared metal materials are excellent catalysts in environmental and high energy conversion, it is difficult to immobilize small organic molecules and achieve in situ catalytic related reactions.
The embodiment of the invention designs and synthesizes the dopamine quinone fiber by utilizing the special structure of the pollutant benzalkonium chloride (DDBAC) and the catalysis site phenoxy anions which can be provided by the functional fiber body in order to solve the defect that the existing adsorbent and catalyst have single function and high resource consumption, and the functional material can realize the conversion of carbon dioxide by adsorbing the pollutant firstly and then catalyzing the carbon dioxide in situ.
In the embodiment of the invention, the structural general formula of the dopamine quinone fiber is as follows:
in the embodiment of the invention, the dopamine quinone fiber is obtained by reacting cyano groups of acrylic fibers with aminoethyl groups of dopamine hydrochloride to load the dopamine quinone on the surfaces of the acrylic fibers.
In the embodiment of the invention, the polyacrylonitrile fiber (PANF) has a large number of cyano groups and methoxycarbonyl groups, can be modified through chemical reaction, is an ideal carrier for preparing the adsorbent and the heterogeneous catalyst, and can be simultaneously suitable for adsorption and catalytic reaction.
The preparation method of the dopamine quinone fiber provided by the embodiment of the invention comprises the following steps:
adding acrylic fiber, dopamine hydrochloride, strong alkali weak acid salt, water and 1, 4-dioxane into a reaction container, refluxing for 17-20 hours under nitrogen protection at 80-120 ℃, then blowing air or oxygen for reaction for 20-40 min, and washing and drying after the reaction is finished to obtain the acrylic fiber/dopamine hydrochloride composite material.
In the embodiment of the invention, the reflux temperature is higher, and the reaction is more sufficient; the reflow time is long, the fiber gain is large, but the mechanical strength of the fiber is too low after the long time.
In the embodiment of the invention, the loading step process of the dopamine quinone is realized through the aminoethyl reaction of cyano groups and dopamine hydrochloride in acrylic fibers, but the oxidation of phenol is not easy to control while the dopamine is rapidly polymerized in the reaction process, so that the functional group is not single.
In the embodiment of the invention, the mass ratio of the acrylic fiber to the dopamine hydrochloride is (5-7) to (17-23).
In the embodiment of the invention, the strong base weak acid salt is potassium carbonate or sodium carbonate.
In a preferred embodiment of the present invention, the steps of adding acrylic fiber, dopamine hydrochloride, strong alkali weak acid salt, water and 1, 4-dioxane into a reaction vessel, refluxing for 17-20 hours under nitrogen protection at 80-120 ℃ and then blowing air or oxygen for reaction for 20-40 min include:
5-7 g of acrylic fiber, 17-23 g of dopamine hydrochloride, 9-13 g of strong alkali weak acid salt, 100-140 mL of water and 100-140 mL of 1, 4-dioxane are added into a reaction vessel, and after nitrogen protection reflux is carried out for 17-20 h at the temperature of 80-120 ℃, air or oxygen is blown in for reaction for 20-40 min.
In the embodiment of the invention, the alkaline environment is favorable for grafting reaction; too much water can result in too low weight gain and insufficient functionalization. The necessary molar ratio of the strong alkali weak acid salt to the dopamine is 1:1.
the embodiment of the invention also provides application of the dopamine quinone fiber in adsorbing cationic surfactant.
The embodiment of the invention also provides application of the dopamine quinone fiber in catalytic conversion of carbon dioxide.
The embodiment of the invention also provides an application method of the dopamine quinone fiber in the catalytic conversion of carbon dioxide, which comprises the following steps:
adsorbing benzalkonium chloride by utilizing nucleophilic attack reaction of chloride ions to the dopamine quinone fiber to obtain a fiber catalyst;
and placing the epoxy compound and the fiber catalyst in a reaction container, and introducing carbon dioxide to perform catalytic conversion reaction to obtain the cyclic carbonate.
In the embodiment of the invention, the step of adsorbing benzalkonium chloride by using the dopamine quinone fiber through a chloride ion nucleophilic attack reaction to obtain a fiber catalyst specifically comprises the following steps:
and (3) putting the dopamine quinone fibers into a benzalkonium chloride solution with the concentration of 300-600 ppm, adjusting the pH value to 8-10, and performing reaction adsorption for 30-180 min at the temperature of 298-303K to obtain the fiber catalyst.
In the examples of the present invention, the amount of the above epoxy compound was 12.5 equivalents of the benzalkonium chloride content in the fiber catalyst.
It is worth noting that the invention focuses on the preparation of multifunctional fibers, and the green recycling is realized to the greatest extent. The principle of adsorbing benzalkonium chloride by dopamine quinone fibers is explored to determine the PAN of the dopamine quinone fibers dpq F and fiber catalyst DDBAC@PAN dpq F structure, further utilizing adsorbed long-chain cation benzalkonium chloride as catalytic site to catalytically convert CO 2 The reaction finally determines that the dopamine quinone fiber has stronger adsorption capacity and higher catalytic reaction activity, has stronger innovation and continuity, and is more environment-friendly.
Examples of certain embodiments of the invention are given below and are not intended to limit the scope of the invention.
In addition, it should be noted that the numerical values set forth in the following examples are as precise as possible, but those skilled in the art will understand that each numerical value should be construed as a divisor rather than an absolute precise numerical value due to measurement errors and experimental operation problems that cannot be avoided. For example, due to errors in the weighing apparatus, it should be understood that the weight values of the respective raw materials for preparing the dopamine quinone fibers with respect to the respective examples may have an error of ±2% or ±1%.
Example 1
6.0g of dry acrylic fiber, 19.0g (0.10 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 100mL of water and 100mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 18 hours under the protection of nitrogen at 100 ℃ and then blown into air for reaction for 20 minutes, and the mixture is repeatedly washed with distilled water at 75 ℃ and refluxed and washed with ethanol by a Soxhlet extractor for 6 hours to be neutral. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 6.9% and the functionality was 0.3mmol/g.
Example 2
6.0g of dry acrylic fiber, 19.0g (0.10 mol) of dopamine hydrochloride, 12.0g (0.12 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 18.5 hours under the protection of nitrogen at the temperature of 110 ℃ and then blown into air for reaction for 20 minutes, and the mixture is repeatedly washed with distilled water at the temperature of 75 ℃ and then a soxhlet extractor is usedEthanol reflux washing for 6h to neutrality. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 14.3% and the functionality was 0.8mmol/g.
Example 3
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 19h under the protection of nitrogen at 110 ℃ and then blown into air for reaction for 30min, repeatedly washed with 75 ℃ distilled water and refluxed and washed with ethanol of a Soxhlet extractor for 6h to neutrality. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 29.4% and the functionality was 1.5mmol/g.
Example 4
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 12.0g (0.12 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 19.5 hours under the protection of nitrogen at 110 ℃ and then blown into air for reaction for 30 minutes, and the mixture is repeatedly washed with distilled water at 75 ℃ and refluxed and washed with ethanol of a Soxhlet extractor for 6 hours to be neutral. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 36.9% and the functionality was 1.8mmol/g. .
Example 5
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 12.0g (0.12 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 20 hours under the protection of nitrogen at 120 ℃ and then blown into air for reaction for 30 minutes, and the mixture is repeatedly washed with distilled water at 75 ℃ and refluxed and washed with ethanol of a Soxhlet extractor for 6 hours to be neutral. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 40.8% and the functionality was 2.1mmol/g.
Comparative example 1
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, and nitrogen protection is carried out at 110 DEG CHeating and refluxing for 16h, then bubbling air for reaction for 30min, repeatedly washing with 75 ℃ distilled water, and refluxing and washing with ethanol of a Soxhlet extractor for 6h to neutrality. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 2.4% and the functionality was 0.1mmol/g.
Comparative example 2
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, and after heating and refluxing for 21h under nitrogen protection at 110 ℃, the fiber is found to melt and cannot be subjected to subsequent treatment.
Comparative example 3
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 18 hours at 110 ℃ under nitrogen protection, then air is blown for reaction for 15 minutes, and the mixture is repeatedly washed with 75 ℃ distilled water and is refluxed and washed with ethanol of a Soxhlet extractor for 6 hours to be neutral. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq F weight gain was 0.0% and functionality was 0.0mmol/g (dopamine quinone loading was unsuccessful).
Comparative example 4
6.0g of dry acrylic fiber, 20.8g (0.11 mol) of dopamine hydrochloride, 11.0g (0.11 mol) of anhydrous sodium carbonate, 120mL of water and 120mL of 1, 4-dioxane are added into a 500mL single-neck flask, the mixture is heated and refluxed for 18 hours at 110 ℃ under nitrogen protection, then air is blown for reaction for 45 minutes, and the mixture is repeatedly washed with 75 ℃ distilled water and is refluxed and washed with ethanol of a Soxhlet extractor for 6 hours to be neutral. Vacuum drying at 60deg.C for 12 hr to obtain dopamine quinone fiber PAN dpq F，PAN dpq The F weight gain was 10.9% and the functionality was 0.9mmol/g.
The invention aims at researching PAN dpq Influence of the degree of modification of F on adsorption Capacity, dry PANs with different modification functionalities will be used dpq F (15 mg) was put into 40mL of DDBAC solution (200 ppm) having pH=8, and stirred at room temperature for 12 hours, respectively. The fibers were removed with forceps and the concentration of benzalkonium chloride in the residual solution was determined with an ultraviolet-visible spectrophotometerDegree, as shown in fig. 1, it was found that the adsorption amount reached a maximum of 395.9mg/g when the weight gain was 29.4% (f=1.5 mmol/g) of the dopamine quinone fiber (example 3); while the adsorption amount remained almost unchanged as the weight gain reached 36.9% (example 4); when the weight gain approaches 40.0% (example 5), the adsorption capacity decreases drastically, while the mechanical strength decreases. Thus, a fiber with a functionality of 1.5mmol/g, namely the dopamine quinone fiber prepared in example 3, was selected for further structural analysis and adsorption experiments.
The effect of the reflux time on the weight gain of the fiber was investigated by changing only the reflux time on the basis of example 3, and the results are shown in table 1.
TABLE 1
The morphology of the dopamine quinone fiber prepared in the embodiment 3 of the present invention is observed, as shown in a scanning electron microscope image of the dopamine quinone fiber shown in fig. 2, wherein fig. 2a is acrylic fiber and fig. 2b is dopamine quinone fiber, and it is known that the modified fiber (dopamine quinone fiber) remains intact.
Further, infrared characterization of the dopamine quinone fiber prepared in example 3 of the present invention, as shown in the FT-IR chart of the dopamine quinone fiber shown in FIG. 3 below, revealed that the original PANF was in 2244 and 1734cm- 1 The peaks appearing at these correspond to the stretching vibrations of the c≡n and c=o groups, respectively. In PAN dpq In the F spectrum, both peaks remain and are relatively attenuated, indicating that there is some unconverted cyano and carbonyl functionality, which helps the modified fiber to retain the mechanical strength and other properties of the original PANF. PAN (PAN) dpq F at 3348 and 1565cm- 1 The new absorption peaks appearing at the sites are respectively attributed to N-H stretching and bending vibration of the amide. 1669cm- 1 The peak at this point may be due to the superposition of stretching vibrations of the carbonyl group and the o-quinone carbonyl group in the amide. In additionIn 827 and 700cm- 1 The adsorption peaks at these correspond to the out-of-plane flexural vibration of C-Hs in the tri-and cis-di-substituted c=c, respectively, in the structure of o-benzoquinone, further demonstrating that dopamine quinone has been grafted to pamf.
Further, the dopamine quinone fiber prepared in example 3 of the present invention was tested for the removal ability of cationic surfactant, specifically, dried PAN at 25deg.C dpq F (15 mg) was placed in 35mL of a solution (300 ppm) of trimethylbenzyl ammonium chloride (TMBAC), triethylbenzyl ammonium chloride (TEBAC), octyldimethylbenzyl ammonium chloride (ODBAC), dodecyldimethylbenzyl ammonium chloride (DDBAC), dodecyldimethylbenzyl ammonium bromide (DDBAB), hexadecyldimethylbenzyl ammonium chloride (CDBAC) at pH=7 and stirred for 12 hours. Taking out the dopamine quinone fiber, measuring residual concentration in quaternary ammonium salt series solution by ultraviolet-visible spectrophotometer (UV), and measuring adsorption selectivity of dopa quinone fiber to cationic surfactant as shown in figure 4, wherein PAN is known dpq F has the adsorption capacity of 0.8 mmol.mmol of benzyl quaternary ammonium salt with the chain length of more than 8- 1 The adsorption of quaternary ammonium ions with short carbon chain and strong polarity is less. This is possible because of the PAN dpq F surface constructs a relatively hydrophobic microenvironment, indicating PAN despite slightly lower adsorption of CDBAC dpq F has a higher affinity for hydrophobic quaternary ammonium ions having longer alkyl chains. Notably, for quaternary ammonium salts having the same quaternary ammonium structure but different halogen ions, the adsorption amount of DDBAC was about 2 mmol.mmol- 1 . The present invention recognizes that the larger gap is not due to the difference in attraction between positive and negative ions, and is more likely to be the difference in nucleophilicity of Cl-and Br-ions in solution. Thus, the present invention proposes a novel adsorption mechanism for nucleophilic attack of chloride ions.
Further, the dopamine quinone fiber prepared in example 3 of the present invention was directed against PAN dpq F (15 mg) was put into benzalkonium chloride solutions of different concentrations and stirred for a certain period of time, and pH and temperature were adjusted to explore PAN dpq F adsorption capacity for benzalkonium chloride. Taking out the fiber, washing and drying to obtain DDBAC@PAN dpq F. Measurement of residue by UV analysisAnd (3) calculating the average value of the adsorption quantity of the benzalkonium chloride by taking the adsorption results of three parallel experiments.
Specifically, PAN is processed under the condition of 25 DEG C dpq F (15 mg) is put into benzalkonium chloride solution with pH of 3-11 and concentration of 300ppm, stirred for 60min, and then the fiber is taken out, washed and dried to obtain DDBAC@PAN dpq F. The concentration of the residual solution was measured by UV analysis, and the adsorption result of three parallel experiments was taken to calculate the average value of the adsorption amount of benzalkonium chloride, and the effect of the obtained different pH on the adsorption of benzalkonium chloride by the dopamine quinone fiber was shown in table 2.
TABLE 2
Specifically, PAN is processed under the condition of 25 DEG C dpq F (15 mg) is put into a benzalkonium chloride solution with pH of 8 and concentration of 300ppm to be stirred for 5 to 180 minutes, and then the fiber is taken out to be washed and dried to obtain DDBAC@PAN dpq F. The concentration of the residual solution was measured by UV analysis, and the average value of the adsorption amount of benzalkonium chloride was calculated by taking the adsorption results of three parallel experiments, and the effect of the obtained different adsorption times on the adsorption of benzalkonium chloride by the dopamine quinone fibers was shown in table 3.
TABLE 3 Table 3
Specifically, PAN is processed under the condition of 25 DEG C dpq F (15 mg) is put into a benzalkonium chloride solution with the pH value of 8 and the concentration of 100-600 ppm, stirred for 60min, and then taken out, washed and dried to obtain DDBAC@PAN dpq F. By UV analysisThe concentration of the residual solution was measured, and the average value of the adsorption amount of benzalkonium chloride was calculated by taking the adsorption results of three parallel experiments, and the influence of the obtained different initial concentrations on the adsorption of benzalkonium chloride by the dopamine quinone fibers was shown in table 4.
TABLE 4 Table 4
| Initial concentration (ppm) | Adsorption quantity |
| 100 | 259.44 |
| 150 | 345.93 |
| 200 | 472.43 |
| 250 | 545.79 |
| 300 | 600.38 |
| 400 | 613.73 |
| 500 | 644.32 |
| 600 | 649.71 |
Specifically, the temperatureUnder 298-308K conditions, PAN dpq F (15 mg) is put into a benzalkonium chloride solution with pH of 8 and concentration of 300ppm, stirred for 40min, and then the fiber is taken out, washed and dried to obtain DDBAC@PAN dpq F. The concentration of the residual solution was measured by UV analysis, and the average value of the adsorption amount of benzalkonium chloride was calculated by taking the adsorption results of three parallel experiments, and the effect of the obtained different temperatures on the adsorption of benzalkonium chloride by the dopamine quinone fibers was shown in table 5.
TABLE 5
From tables 2 to 5, it is clear that the dopamine quinone fiber of the embodiment of the present invention adsorbs benzalkonium chloride, and the adsorption conditions corresponding to the maximum adsorption amount are ph=8, benzalkonium chloride concentration of 300ppm, reaction time of 40min, and reaction temperature of 25 ℃.
Further, an epoxy compound (5 mmol) and 0.8mol% equivalent of a fiber catalyst DDBAC@PAN dpq F was placed in a 10mL Schlenk tube equipped with a magnetic stirring bar. By CO 2 CO in normal pressure state is introduced after the gas in the reactor is replaced for 10 times 2 The reaction was carried out at 80℃for 12 hours. After the reaction, the reaction device was cooled by a cold water bath, the fiber catalyst was filtered and washed with acetone, and the cyclic carbonate yield was analyzed and calculated by gas chromatography normalization.
Specifically, the fiber catalyst DDBAC@PAN with the maximum adsorption amount is taken dpq F, in various amounts (0.1 to 0.8 mol%) into a 10mL Schlenk tube previously charged with an epoxy compound (5 mmol), with CO 2 CO in normal pressure state is introduced after the gas in the reactor is replaced for 10 times 2 The reactivity under various conditions was tried, and the yield of the obtained cyclic carbonate was as shown in Table 6, and the yield under the optimum conditions was 94.7% as determined by screening.
TABLE 6
| Fiber catalyst dosage (mol%) | Temperature (. Degree. C.) | Time (h) | Yield (%) |
| 0.10 | 80 | 12 | 40.3 |
| 0.30 | 80 | 12 | 78.0 |
| 0.50 | 80 | 12 | 82.6 |
| 0.80 | 80 | 12 | 88.4 |
| 1.00 | 80 | 12 | 86.2 |
| 0.80 | 60 | 12 | 39.2 |
| 0.80 | 70 | 12 | 56.4 |
| 0.80 | 90 | 12 | 94.7 |
| 0.80 | 80 | 8 | 74.4 |
| 0.80 | 80 | 10 | 86.0 |
| 0.80 | 80 | 15 | 93.7 |
| 0.80 | 80 | 24 | 91.4 |
In conclusion, after the dopamine quinone fiber provided by the embodiment of the invention adsorbs the disinfectant benzalkonium chloride, CO can be catalyzed in situ 2 Converting it into cyclic carbonate commonly used in chemical industryThe water pollution and the air pollution are treated simultaneously, and the multi-dimensional utilization of the functional fiber is realized.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A method for preparing a dopamine quinone fiber, comprising:
adding acrylic fiber, dopamine hydrochloride, strong alkali weak acid salt, water and 1, 4-dioxane into a reaction container, refluxing for 17-20 hours under nitrogen protection at 80-120 ℃, then blowing air or oxygen for reaction for 20-40 minutes, and washing and drying after the reaction is finished to obtain the acrylic fiber/dopamine hydrochloride composite material;
the mass ratio of the acrylic fiber to the dopamine hydrochloride is (5-7) to (17-23).
2. The method for preparing the dopamine quinone fiber according to claim 1, wherein the strong alkali weak acid salt is potassium carbonate or sodium carbonate.
3. The method for preparing the dopamine quinone fiber according to claim 1, wherein the step of adding the acrylic fiber, the dopamine hydrochloride, the strong alkali weak acid salt, the water and the 1, 4-dioxane into the reaction vessel, refluxing for 17-20 hours under the condition of nitrogen protection at the temperature of 80-120 ℃, and then blowing air or oxygen for reacting for 20-40 minutes comprises the following steps:
5-7 g of acrylic fiber, 17-23 g of dopamine hydrochloride, 9-13 g of strong alkali weak acid salt, 100-140 mL of water and 100-140 mL of 1, 4-dioxane are added into a reaction container, nitrogen is protected and refluxed for 17-20 hours at the temperature of 80-120 ℃, and then air or oxygen is blown in for reaction for 20-40 minutes.
4. A dopamine quinone fiber, characterized in that the dopamine quinone fiber is prepared by the preparation method of the dopamine quinone fiber in claim 1; the structural general formula of the dopamine quinone fiber is as follows:
。
5. the dopamine quinone fiber according to claim 4, wherein the dopamine quinone fiber is obtained by reacting cyano groups of acrylic fiber with aminoethyl groups of dopamine hydrochloride to load the dopamine quinone on the surface of the acrylic fiber.
6. Use of a dopamine quinone fiber according to claim 4 or 5 for adsorption of cationic surfactants.
7. Use of a dopamine quinone fiber according to claim 4 or 5 for the catalytic conversion of carbon dioxide.
8. A method of using the dopamine quinone fiber of claim 4 or 5 in the catalytic conversion of carbon dioxide, comprising:
adsorbing benzalkonium chloride by using chloride ion nucleophilic attack reaction to the dopamine quinone fiber according to claim 4 or 5 to obtain a fiber catalyst;
and placing the epoxy compound and the fiber catalyst in a reaction container, and introducing carbon dioxide to perform catalytic conversion reaction to obtain the cyclic carbonate.
9. The method for using the dopamine quinone fiber in the catalytic conversion of carbon dioxide according to claim 8, wherein the step of adsorbing the benzalkonium chloride by using the chloride ion nucleophilic attack reaction of the dopamine quinone fiber according to claim 4 or 5 to obtain a fiber catalyst comprises the following steps:
the dopamine quinone fiber according to claim 4 or 5 is put into benzalkonium chloride solution with the concentration of 300-600 ppm, the pH is adjusted to 8-10, and the reaction adsorption is carried out for 30-180 min under the condition that the temperature is 298-303K, so as to obtain the fiber catalyst.
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| CN104313889A (en) * | 2014-10-22 | 2015-01-28 | 武汉纺织大学 | Preparation method of photosensitive antibacterial fabric |
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