CN111318265A - Preparation method and application of mosaic type magnetic imprinting adsorbent - Google Patents
Preparation method and application of mosaic type magnetic imprinting adsorbent Download PDFInfo
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Abstract
The invention relates to a preparation method of a mosaic type magnetic imprinting adsorbent, belonging to the technical field of preparation of specific separation functional materials; firstly, preparing amino modified Fe3O4Particles and Janus nano sheets, and then preparing a Janus molecularly imprinted polymer by an ATRP molecularly imprinted technology; then adding Alg-Ca2+Combined with the anisotropy of Pickering emulsion and Janus-MIPs nano-sheets and filled with Fe3O4‑NH2Preparation of mosaic type Alg-Ca2+A magnetic molecularly imprinted adsorbent of the core; the mosaic magnetic imprinting adsorbent prepared by the invention has higher adsorption capacity, and can effectively solve the problem that molecular imprinting nanosheet materials are easy to stack; meanwhile, paramagnetic particles are filled, so that the Pickering emulsion has magnetic response and is easy to separate and collect; and is provided withThe obvious dA molecule recognition performance is used for selective recognition and separation of dA in aqueous solution.
Description
Technical Field
The invention belongs to the technical field of preparation of specific selective separation functional materials, and particularly relates to a preparation method of a mosaic magnetic imprinting adsorbent.
Background
The nanosheet adsorbent has good physical and chemical properties, and is widely concerned in the field of adsorption separation due to the advantages of high specific surface area and easiness in modification. Two surfaces of the nano-sheet can be modified or grafted with different types of functional groups or polymer chains through covalent interaction to obtain the functionalized nano-sheet. However, the traditional nanosheet adsorbent still has the defects that the selectivity of adsorption separation needs to be improved, the site loss caused by agglomeration and stacking of flaky materials and the problem of difficult separation and collection limit the application in the separation of complex system targets. Therefore, there is an urgent need to develop a new strategy to solve the above limitations of the conventional nanosheet adsorbent.
Surface-initiated atom transfer radical polymerization (SI-ATRP) is a common method for grafting polymers on the surface of a substrate, generates molecular imprinted polymers (SI-MIPs) on the surface of a substrate material, and builds molecular imprinted sites on the surface of the substrate material, thereby bringing brand-new possibility for surface functionalization of the substrate material. In general, the generated polymer has highly controllable structure, high binding capacity, rapid mass transfer and rapid binding kinetics, and can be used as an ideal reaction platform for further chemical modification. At present, the nano sheet has high specific surface area and high transverse-longitudinal ratio, so that the nano sheet has differentiation directionality, and the nano sheet is used as a substrate of molecular imprinting to prepare the molecularly imprinted nano sheet material through a surface imprinting process, so that the selectivity of the nano sheet material is obviously improved. The bernous (Janus) material refers to an anisotropic material with two different structures and chemical compositions, and has wide application in many fields and great attention from the scientific community. Therefore, a suitable method can be adopted to combine the Janus material and the molecularly imprinted nanosheet, so that the multifunctional nanosheet adsorbent (Janus-MIPs) is prepared, and the versatility of the nanosheet material is endowed.
The Pickering emulsion is an emulsion which utilizes solid particles to be adsorbed on an oil-water interface to reduce the surface energy of the oil-water interface, thereby improving the stability of the oil-water interface. The anisotropic Janus nanosheet is provided with two opposite wetting surfaces, the Pickering emulsion can be well stabilized, the embedding depth of the nanosheet can be controllably adjusted according to the wettability of the two surfaces of the nanosheet, the Pickering emulsion similar to a mosaic type is generated, and the problem that molecularly imprinted nanosheet materials are easy to stack is solved. Alginate (Alg)-) Is a natural ion-reactive polysaccharide, due to its biocompatibility and degradability, and is associated with divalent cations (especially Ca)2+) Has good gelation and good biomedical application, so that Alg-Ca can be prepared by a suitable method2+And Pickering emulsion and Janus-MIPsAnisotropic bonding of nanoplates while filling with paramagnetic particles (Fe)3O4-NH2) Preparation of mosaic type Alg-Ca2+The core magnetic molecular imprinting adsorbent (J-SNs-MMIPs-Pickering) is used for selectively adsorbing and separating 2' -deoxyadenosine (dA) molecules.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a mosaic type magnetic imprinting adsorbent for solving the technical bottlenecks of selectivity of the existing nanosheet adsorbent, site loss caused by agglomeration and stacking of flaky materials, difficult separation and collection and the like, and is used for selective adsorption and separation of dA.
Firstly, Graphene Oxide (GO) nanosheets are used as stable particles to generate Pickering emulsion of solid paraffin in water, bromine is modified on the outer surface of the Pickering emulsion through bromo-isobutyryl bromide (BIBB), and paraffin is removed to generate Janus nanosheets (J-SNs) with one surface provided with bromine and the other surface not modified; then, bromine on the surface is used as an initiator of Atom Transfer Radical Polymerization (ATRP), dA is used as a template molecule, 5- (2-methoxyvinyl) -2' -deoxyuridine (AcrU) which forms hydrogen bond with dA and has better matching property is used as a functional monomer, and dA molecularly imprinted polymers (J-SNs-MIPs) are grafted on the hydrophobic surface of the Janus nanosheets; then J-SNs-MIPs are used as stable particles to obtain Ca as the inner phase respectively2+And Fe3O4-NH2The Pickering emulsion B and the internal phase are Alg-With Fe3O4-NH2The Pickering emulsion A of (1) mixing the two emulsions by mild mechanical stirring, dynamically combining, inducing Alg-Ca2+Gelatinizing to obtain Alg-Ca2+The material is a mosaic magnetic imprinting adsorbent (J-SNs-MMIPPs-Pickering) which is used as a core, and the obtained material is applied to the efficient selective adsorption and separation of dA in an aqueous solution.
In order to achieve the above purpose, the specific steps of the invention are as follows:
(1)Fe3O4-NH2preparing;
adding a certain amount of FeCl3·6H2Mixing O, 1, 6-hexanediamine, anhydrous sodium acetate and ethylene glycol to obtainStirring the mixed solution at a certain temperature and 50 ℃ until the mixed solution is transparent, and then transferring the mixed solution into a high-pressure kettle for heating reaction; heating to 200 deg.C for 6 hr, washing with water and ethanol, separating with magnet, and vacuum drying at 50 deg.C to obtain black modified amino Fe3O4Nanoparticles, denoted Fe3O4-NH2(ii) a Dispersing the obtained product in toluene at a concentration of 10 mg/mL;
(2) preparing J-SNs nanosheets;
first by Hummer’Preparing GO nano-sheets by a method s; taking GO nano-sheets as stable particles, respectively taking water and solid paraffin as a continuous phase and a dispersed phase, adding a certain amount of saturated sodium chloride (NaCl) solution as electrolyte, and stirring at a certain rotating speed to generate GO-Pickering emulsion; then centrifugally collecting and vacuum drying; dispersing the obtained GO-Pickering product in N, N-Dimethylformamide (DMF) solution, adding a certain amount of BIBB and triethylamine for reaction, centrifugally collecting after reaction, cleaning to remove oil phase, ultrasonically crushing, and drying in vacuum to obtain J-SNs nanosheets for later use;
(3) preparing J-SNs-MIPs nanosheets;
firstly, mixing dimethyl sulfoxide and acetonitrile, adding 2 '-deoxyadenosine (dA) and 5- (2-methoxyvinyl) -2' -deoxyuridine (AcrU), introducing nitrogen gas at normal temperature for reaction, and then carrying out self-assembly in a dark place; then, adding Ethylene Glycol Dimethacrylate (EGDMA) and the J-SNs nanosheet prepared in the step (2), stirring at a certain temperature, and adding N, N, N, N, N-Pentamethyldiethylenetriamine (PMDEIA) and copper bromide (CuBr)2) Continuously stirring and carrying out water bath heating reaction with ascorbic acid (VC), centrifuging after reaction, collecting a product, washing twice with methanol and acetone, carrying out Soxhlet extraction on the product by using a methanol/hydrochloric acid mixed solution as an eluent (7:3, V: V), and finally drying to obtain J-SNs-MIPs nanosheets;
(4) J-SNs-preparation of MMIPPs-Pickering;
taking the J-SNs-MIPs nanosheet prepared in the step (3) as a stable particle, adding a certain amount of span80 for assisting stabilization, and then addingWater, toluene, a certain amount of Alg-Na and Fe prepared in step (1)3O4-NH2Stirring the particles for 30min under mechanical stirring at a certain rotating speed to obtain Pickering emulsion A;
taking the J-SNs-MIPs nanosheets prepared in the step (3) again as stable particles, adding a certain amount of span80 for assisting in stabilization, and then adding water, toluene and CaCl2And Fe3O4-NH2Granulating to obtain Pickering emulsion B; adding the emulsion A into the emulsion B to obtain a mixed solution, stirring and mixing under a certain rotation speed condition, stirring under the same rotation speed mechanical stirring, adding ethanol for stirring, centrifuging, washing off toluene, and drying under vacuum to obtain the mosaic type magnetic imprinting adsorbent, which is recorded as J-SNs-MMIPs-Pickering.
Preferably, FeCl as described in step (1)3·6H2The dosage ratio of O, 1, 6-hexamethylene diamine, anhydrous sodium acetate and glycol is as follows: 1.0g, 6.0-7.0g, 50-70mg, 1.5-2.5g, 20-40 mL.
Preferably, in the step (2), the dosage ratio of the GOGO nano sheets, water, solid paraffin and saturated sodium chloride (NaCl) solution is as follows: 0.8-1.2mL of 1.0mg and 0.08-0.12g and 0.07-0.08mL of the total weight of the composition.
Preferably, in the step (2), the dosage ratio of GO-Pickering, N-dimethylformamide, BIBB and triethylamine is as follows: 1.0g, 60 mL: 45-55 mu L of 90-110 mu L.
Preferably, the high-speed stirring in the step (2) is carried out at 14000rpm for 5-10 min; the reaction time is 24 hours when certain amount of BIBB and triethylamine are added.
Preferably, in the step (3), the ratio of the 2 '-deoxyadenosine, the 5- (2-methoxyvinyl) -2' -deoxyuridine, the dimethyl sulfoxide and the acetonitrile is 1.0g: 4.0-5.0 g: 40-60 mL: 140-160 mL.
Preferably, in the step (3), the dosage ratio of the 2' -deoxyadenosine to the ethylene glycol dimethacrylate to the J-SNs nanosheets is 1.0g: 10-12 mL: 900 and 1100 mg.
Preferably, in step (3), the 2' -deoxyadenosine, the PMDEIA and the CuBr are used2The dosage ratio of VC and VC is 1.0g:1.0mL:70-80mg:60-65 mg.
Preferably, in the step (3), the reaction time of introducing nitrogen is 30-40 min; the time for self-assembly in a dark place is 90-100 min; the stirring temperature under a certain temperature condition is 30 ℃, and the stirring time is 30-40 min; the temperature of the water bath heating reaction is 60-70 ℃, and the time is 12-15 h; the temperature of the drying was 45 ℃.
Preferably, in the step (4), the dosage ratio of J-SNs-MIPs, water and toluene in the emulsion A is as follows: 0.225-0.275mL of 1.0mg and 0.35-0.4mL of the total amount of the mixture.
Preferably, in step (4), the emulsion A contains J-SNs-MIPs, span80, Alg-Na and Fe3O4-NH2The dosage ratio of the components is 1.0mg to 0.01-0.02g to 0.003-0.004g to 0.2-0.3 g.
Preferably, in the step (4), the dosage ratio of J-SNs-MIPs, water and toluene in the emulsion B is as follows: 0.225-0.275mL of 1.0mg and 0.35-0.4mL of the total amount of the mixture.
Preferably, in the step (4), J-SNs-MIPs, span80 and CaCl in the emulsion B2And Fe3O4-NH2The dosage ratio of the components is 1.0mg to 0.01-0.02g to 0.015-0.020g to 0.2-0.3 g.
Preferably, the volume ratio of the emulsion A, the emulsion B and the ethanol in the step (4) is 1: 5.
preferably, the rotation speed of the mechanical stirring in the step (4) is 800rpm, and the stirring time is 30-50 min; and the time for adding the ethanol and stirring is 5-10 min.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, a Janus nano sheet is used as a substrate, a polymer prepared by an ATRP technology is used as a reaction platform, AcrU is used as a functional monomer, a novel nano sheet adsorbent (J-SNs-MIPs) with high selectivity is constructed, and the selectivity of a nano sheet material is obviously improved; then J-SNs-MIPs are used as stable particles to obtain Ca with magnetic particles in the internal phase2+And Alg-The Pickering emulsions A and B are dynamically combined to induce Alg-Ca2+Gelation, and the prepared J-SNs-MMIPPs-Pickering can effectively solve the problem that the molecularly imprinted nano-sheet material is easy to stack; simultaneously filled with paramagnetic particles (Fe)3O4-NH2) The Pickering emulsion has magnetic response and is easy to separate and collect.
Drawings
FIG. 1 is a scanning electron micrograph of J-SNs (a), J-SNs-MIPs (b), J-SNs-MMIPs-Pickering (c, d) prepared in example 1.
FIG. 2 is the contact angle for GO, J-SNs-MIPs and GO-MIPs prepared in this example 1.
FIG. 3 shows Fe prepared in example 13O4-NH2(a) IR spectra of GO (B), J-SNs-MIPs (c) and J-SNs-MMIPPs-Pickering (d).
FIG. 4 shows Fe prepared in example 13O4-NH2And XRD spectra of J-SNs-MMIPPs-Pickering.
FIG. 5 is a graph showing the adsorption kinetics of J-SNs-MMIPPs-Pickering and J-SNs-MNIPs-Pickering prepared in example 1 and a model-fitted curve thereof.
FIG. 6 shows the adsorption equilibrium of J-SNs-MMIPPs-Pickering and J-SNs-MNIPs-Pickering in example 1 and a model-fitted curve thereof.
FIG. 7 shows the regenerated adsorption capacities of J-SNs-MMIPs-Pickering and J-SNs-MNIPs-Pickering in example 1.
Detailed Description
In order to better understand the technical solutions of the present invention for those skilled in the art, the following further describes the technical solutions of the present invention with reference to specific embodiments and drawings.
The identification performance evaluation in the embodiment of the invention is carried out according to the following method:
completing by using a static adsorption experiment; adding 5mL of dA solution with a certain concentration into a centrifuge tube, adding a certain amount of J-SNs-MMIPs-Pickering adsorbent, standing in a constant-temperature water area at 25 ℃ for several hours, measuring the content of dA after adsorption by using an ultraviolet-visible spectrophotometer, and calculating the adsorption capacity according to the result; 5mL of dA solution with the initial concentration of 300 mu mol/L is added into a centrifuge tube, a certain amount of J-SNs-MMIPs-Pickering adsorbent is added, the dA solution is taken out under a certain time gradient, and the adsorption capacity is calculated according to the result and is used for participating in the study on the kinetic performance of the J-SNs-MMIPs-Pickering adsorbent. Several nucleoside compounds with similar structures and properties, such as 2-deoxyguanosine (dG), 2-deoxycytidine (dC), 5' -monophosphate-Adenosine (AMP) and the like, are selected as selective adsorbates and participate in researching the recognition performance of the adsorbents.
The invention is further illustrated by the following examples.
Example 1:
(1)Fe3O4-NH2preparing;
1.0g FeCl3·6H2O, 6.5g of 1, 6-hexanediamine, 2.0g of anhydrous sodium acetate and 30mL of ethylene glycol were stirred at 50 ℃ to be transparent. The mixture was transferred to an autoclave and heated to 200 ℃ for 6 hours. After the reaction is finished, washing the black amino-modified Fe by water and ethanol3O4Nanoparticles (Fe)3O4-NH2) Separating with magnet, and vacuum drying at 50 deg.C. The product was redispersed in toluene at a concentration of 10 mg/mL.
(2) Preparing J-SNs nanosheets;
by Hummer’And(s) preparing GO nano-sheets by using a method. 50mg GO nano-sheets are taken as stable particles, 50mL of water and 5g of solid paraffin are respectively taken as a continuous phase and a dispersed phase, 3.75mL of saturated sodium chloride (NaCl) solution is added as electrolyte, and the mixture is stirred at the rotating speed of 14000rpm for 5min at a high speed to generate GO-stable Pickering emulsion (GO-Pickering). Then, the mixture was collected by centrifugation and dried in vacuum. 8.0g of GO-Pickering is dispersed in 60mL of N, N-Dimethylformamide (DMF) solution, 400 mu of LBIBB and 800 mu of triethylamine are added for reaction for 24 hours, and then the mixture is centrifugally collected, the oil phase is washed off, and the mixture is ultrasonically crushed to obtain J-SNs nanosheets which are dried in vacuum.
(3) Preparing J-SNs-MIPs nanosheets;
dissolving 0.1g of 2 '-deoxyadenosine (dA) and 0.45g of 5- (2-methoxyvinyl) -2' -deoxyuridine (AcrU) in a mixed solution of 5mL of dimethyl sulfoxide and 15mL of acetonitrile, introducing nitrogen at normal temperature for 30min, and self-assembling for 1.5h in a dark place; then 1.09mL of Ethylene Glycol Dimethacrylate (EGDMA) and 100mg of J-SNs nanosheet are added, stirred at 30 ℃ for 0.5h, and then 0.4mL of N, N, N, N, N-Pentamethyldiethylenetriamine (PMDEIA) and 30mg of copper bromide (CuBr) are added2) And 25mg of ascorbic acid (VC), the mixed solution was continuously stirred and heated in a water bath at 70 ℃ for 12 hours of reaction, the product was collected by centrifugation, followed by washing twice with methanol and acetone, Soxhlet extraction of J-SNs-MIPs using a mixed solution of methanol/hydrochloric acid as an eluent (7:3, V: V) to remove unreacted template molecules and organic solvents, and finally, the purified J-SNs-MIPs were dried at 45 ℃.
(4) J-SNs-preparation of MMIPPs-Pickering;
20mg of J-SNs-MIPs nano-sheet as a stable particle, 0.3g of span80 as auxiliary stability, 5mL of water and 7.5mL of toluene as a dispersed phase and a continuous phase respectively, and 0.075g of Alg-Na and 5mg of Fe are added into the water phase3O4-NH2Stirring the particles for 30min under mechanical stirring at a certain rotating speed to obtain Pickering emulsion A; under the same conditions, 0.35g of CaCl was added to the aqueous phase2And 5mgFe3O4-NH2Granulating to obtain Pickering emulsion B; adding the emulsion A into the emulsion B, mixing, stirring at the same rotation speed for 30min under mechanical stirring, adding 5ml ethanol, stirring for 5min, centrifuging, washing off toluene to obtain J-SNs-MMIPs-Pickering, and vacuum drying.
The preparation procedure of J-SNs-MNIPs-Pickering was the same as that of J-SNs-MMIPs-Pickering except that no template molecule, 2' -deoxyadenosine (dA), was added.
FIG. 1 is a scanning electron micrograph of J-SNs (a), J-SNs-MIPs (b), J-SNs-MMIPs-Pickering (c, d) prepared in the examples. The figure shows that J-SNs-MIPs obviously generate polymers relative to the surface of J-SNs, the molecularly imprinted polymers are successfully modified on the nanosheets, the size of J-SNs-MMIPPs-Pickering is 15 micrometers, the surface can obviously see the distribution of the nanosheets, and the successful preparation of the J-SNs-MMIPPs-Pickering is shown.
FIG. 2 is the contact angle of GO, J-SNs-MIPs and GO-MIPs prepared in the examples. The figure shows that the hydrophobicity of GO, J-SNs-MIPs and GO-MIPs nano-sheets is sequentially increased, the structures on two sides of the nano-sheets are different, and the J-SNs-MIPs nano-sheets are successfully prepared.
FIG. 3 is Fe prepared in example3O4-NH2(a) IR spectra of GO (b), J-SNs-MIPs (c) and J-SNs-MMIPPs-Pickering (d). The figure shows that the peak voltage is at 576cm-1、669cm-1、1108～1729cm-1、2920cm-1Several characteristic absorption peaks are generated, which indicates that the mosaic magnetic imprinting adsorbent is successfully prepared.
FIG. 4 shows Fe prepared in example3O4-NH2And XRD spectra of J-SNs-MMIPPs-Pickering. The diagram shows the Fe produced3O4-NH2And J-SNs-MMIPPs-Pickering and Fe3O4And (4) matching standard cards to show that the mosaic type magnetic imprinting adsorbent is successfully prepared.
Example 2:
(1)Fe3O4-NH2preparing;
1.0g FeCl3·6H2O, 6g of 1, 6-hexanediamine, 1.5g of anhydrous sodium acetate and 20mL of ethylene glycol are stirred at the temperature of 50 ℃ to be transparent; the mixture was transferred to an autoclave and heated to 200 ℃ for 6 h. After the reaction is finished, washing the black amino-modified Fe by water and ethanol3O4Nanoparticles (Fe)3O4-NH2) Separating with magnet, and vacuum drying at 50 deg.C. The product was redispersed in toluene at a concentration of 10 mg/mL.
(2) Preparing J-SNs nanosheets;
by Hummer’Preparing GO nano-sheets by a method s; 50mg GO nano-sheets are taken as stable particles, 40mL of water and 4g of solid paraffin are respectively taken as a continuous phase and a dispersed phase, 3.5mL of saturated sodium chloride (NaCl) solution is added as electrolyte, and the mixture is stirred at the rotating speed of 14000rpm for 5min at a high speed to generate GO-stable Pickering emulsion (GO-Pickering). Then, the mixture was collected by centrifugation and dried in vacuum. 8.0g of GO-Pickering is dispersed in 60mL of N, N-Dimethylformamide (DMF) solution, 360 mu of LBIBB and 720 mu of triethylamine are added for reaction for 24 hours, and then the mixture is centrifugally collected, washed to remove an oil phase, ultrasonically crushed to obtain J-SNs nanosheets, and dried in vacuum.
(3) Preparing J-SNs-MIPs nanosheets;
dissolving 0.1g 2 '-deoxyadenosine (dA) and 0.4g 5- (2-methoxyvinyl) -2' -deoxyuridine (AcrU) in a mixture of 4mL dimethyl sulfoxide and 16mL acetonitrile, introducing nitrogen at room temperature for 30min, and self-assembling 1.5 in the darkh; then adding 1.0mL of Ethylene Glycol Dimethacrylate (EGDMA) and 90mg of J-SNs nanosheet, stirring at 30 ℃ for 0.5h, and then adding 0.4mL of N, N, N, N, N-Pentamethyldiethylenetriamine (PMDEIA) and 28mg of copper bromide (CuBr)2) And 24mg of ascorbic acid (VC), the mixed solution was continuously stirred and heated in a water bath at 70 ℃ for 12 hours of reaction, the product was collected by centrifugation, followed by washing twice with methanol and acetone, Soxhlet extraction of J-SNs-MIPs using a mixed solution of methanol/hydrochloric acid as an eluent (7:3, V: V) to remove unreacted template molecules and organic solvents, and finally, the purified J-SNs-MIPs were dried at 45 ℃.
(4) J-SNs-preparation of MMIPPs-Pickering;
20mg of J-SNs-MIPs nanosheet as a stable particle, 0.2g of span80 as auxiliary stability, 4.5mL of water and 7mL of toluene as a dispersed phase and a continuous phase respectively, and 0.06g of Alg-Na and 4mg of Fe are added into the water phase3O4-NH2Stirring the particles for 30min under mechanical stirring at a certain rotating speed to obtain Pickering emulsion A; under the same conditions, 0.3g of CaCl was added to the aqueous phase2And 4mgFe3O4-NH2Granulating to obtain Pickering emulsion B; adding the emulsion A into the emulsion B, mixing, stirring at the same rotation speed for 30min under mechanical stirring, adding 5ml ethanol, stirring for 5min, centrifuging, washing off toluene to obtain J-SNs-MMIPs-Pickering, and vacuum drying.
Example 3:
(1)Fe3O4-NH2preparing;
1.0g FeCl3·6H2O, 7g of 1, 6-hexanediamine, 2.5g of anhydrous sodium acetate and 40mL of ethylene glycol were stirred at 50 ℃ to be transparent. The mixture was transferred to an autoclave and heated to 200 ℃ for 6 h. After the reaction is finished, washing the black amino-modified Fe by water and ethanol3O4Nanoparticles (Fe)3O4-NH2) Separating with magnet, and vacuum drying at 50 deg.C. The product was redispersed in toluene at a concentration of 10 mg/mL.
(2) Preparing J-SNs nanosheets;
by Hummer’And(s) preparing GO nano-sheets by using a method. 50mg GO nano-sheet as stable particle, 60mL water and6g of solid paraffin is respectively used as a continuous phase and a dispersion phase, 4mL of saturated sodium chloride (NaCl) solution is added as electrolyte, and the mixture is stirred at the rotating speed of 14000rpm for 5min at a high speed to generate a Pickering emulsion (GO-Pickering) with stable GO. Then, the mixture was collected by centrifugation and dried in vacuum. 8.0g of GO-Pickering is dispersed in 60mL of N, N-Dimethylformamide (DMF) solution, 440 mu L of BIBB and 880 mu L of triethylamine are added for reaction for 24 hours, and then the mixture is centrifugally collected, the oil phase is washed away, and the mixture is ultrasonically crushed to obtain J-SNs nanosheets which are dried in vacuum.
(3) Preparing J-SNs-MIPs nanosheets;
dissolving 0.1g of 2 '-deoxyadenosine (dA) and 0.5g of 5- (2-methoxyvinyl) -2' -deoxyuridine (AcrU) in a mixed solution of 6mL of dimethyl sulfoxide and 14mL of acetonitrile, introducing nitrogen at normal temperature for 30min, and self-assembling for 1.5h in a dark place; then adding 1.2mL of Ethylene Glycol Dimethacrylate (EGDMA) and 90mg of J-SNs nanosheet, stirring at 30 ℃ for 0.5h, and then adding 0.4mL of N, N, N, N, N-Pentamethyldiethylenetriamine (PMDEIA) and 32mg of copper bromide (CuBr)2) And 26mg of ascorbic acid (VC), the mixed solution was continuously stirred and heated in a water bath at 70 ℃ for 12 hours of reaction, the product was collected by centrifugation, followed by washing twice with methanol and acetone, Soxhlet extraction of J-SNs-MIPs using a mixed solution of methanol/hydrochloric acid as an eluent (7:3, V: V) to remove unreacted template molecules and organic solvents, and finally, the purified J-SNs-MIPs were dried at 45 ℃.
(4) J-SNs-preparation of MMIPPs-Pickering;
20mg of J-SNs-MIPs nanosheet as a stable particle, 0.4g of span80 as auxiliary stability, 5.5mL of water and 8mL of toluene as a dispersed phase and a continuous phase respectively, and 0.08g of Alg-Na and 6mg of Fe are added into the water phase3O4-NH2Stirring the particles for 30min under mechanical stirring at a certain rotating speed to obtain Pickering emulsion A; under the same conditions, 0.4g of CaCl was added to the aqueous phase2And 6mgFe3O4-NH2Granulating to obtain Pickering emulsion B; adding the emulsion A into the emulsion B, mixing, stirring at the same rotation speed for 30min under mechanical stirring, adding 5ml ethanol, stirring for 5min, centrifuging, washing off toluene to obtain J-SNs-MMIPs-Pickering, and vacuum drying.
Test example 1:
respectively adding 5mL of 2' -deoxyadenosine (dA) solution with the initial concentration of 300 mu mol/L into a centrifuge tube, respectively adding 5mg of J-SNs-MMIPs-Pickering and J-SNs-MNIPs-Pickering adsorbents in example 1, and respectively taking out at the time of 5min, 15 min, 30min, 60min, 120 min, 240 min, 360 min, 480 min and 720 min; the blot adsorbent was separated from the solution by a magnet. The concentration of dA in the filtrate was determined by calculation using an ultraviolet spectrophotometer at a wavelength of 259nm, and from the results, FIG. 5 was obtained and the time to equilibrium of adsorption was calculated; the results show that the adsorption capacity of J-SNs-MMIPPs-Pickering and J-SNs-MNIPs-Pickering increases rapidly during the first 60min, indicating that the template molecules can diffuse into the adsorbent easily. And the adsorption efficiency of J-SNs-MMIPPs-Pickering is obviously faster than that of J-SNs-MNIPs-Pickering, the adsorption capacity of dA is larger than that of J-SNs-MNIPs-Pickering, and a large number of empty imprinting sites are formed on the surface of J-SNs-MMIPPs-Pickering. After rapid adsorption, the adsorption rate drops sharply and reaches equilibrium at 100min due to the drop in dA concentration and the reduction in the number of binding sites.
Test example 2:
5mL of dA solutions having initial concentrations of 20, 40, 70, 100, 300, 500, 700 and 1000. mu. mol/L were added to a centrifuge tube, 5mg of J-SNs-MNIPs-Pickering adsorbent of example 1 was added, the test solution was left to stand in a water bath at 25 ℃ for 4 hours, the blotting adsorbent and the solution were separated by a magnet, the concentrations of dA molecules not adsorbed were measured by an ultraviolet-visible spectrophotometer at a wavelength of 259nm, and from the results, FIG. 6 was obtained and the adsorption capacity was calculated. The result shows that the maximum adsorption capacity of J-SNs-MMIPs-Pickering to dA is 73.04 mu mol/g when adsorption equilibrium is achieved, the maximum adsorption capacity of J-SNs-MNIPs-Pickering to dA is 53.39 mu mol/g respectively when adsorption equilibrium is achieved, and the maximum adsorption capacity of J-SNs-MMIPs-Pickering is higher than that of J-SNs-MNIPs-Pickering at the same temperature, which indicates that J-SNs-MMIPs-Pickering is an adsorbent for effectively identifying dA.
Test example 3:
2-deoxyguanosine (dG), 2-deoxycytidine (dC), 5' -monophosphate-Adenosine (AMP), and the like were selected as selective adsorbates, solutions of the above three compounds were prepared at a concentration of 300. mu. mol/L, 5mL of each was added to a centrifuge tube, 5mg of the imprinted adsorbent and the non-imprinted adsorbent prepared in example 1 were added, respectively, the test solution was placed in a water bath oscillator at 25 ℃ for 10 hours, the imprinted adsorbent and the solution were separated by a magnet, the concentration of unadsorbed dA molecules was measured by an ultraviolet-visible spectrophotometer at a wavelength of 259nm, and FIG. 7 was obtained based on the results. The result shows that the adsorption capacity of J-SNs-MMIPs-Pickering on four compounds follows the sequence of dA & gt dG & gt dC & gt AMP, so that the existence of imprinted sites with the shape and the size consistent with that of dA on the surface of J-SNs-MMIPs-Pickering can be inferred, and the J-SNs-MMIPs-Pickering has better adsorption specificity on dA.
Description of the drawings: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (10)
1. A preparation method of a mosaic type magnetic imprinting adsorbent is characterized by comprising the following specific steps:
(1) preparation to obtain Fe3O4-NH2；
(2) Preparing to obtain J-SNs nano-sheets;
(3) firstly, mixing dimethyl sulfoxide and acetonitrile, adding 2 '-deoxyadenosine and 5- (2-methoxyvinyl) -2' -deoxyuridine, introducing nitrogen gas at normal temperature for reaction, and then carrying out light-resistant self-assembly; then, adding ethylene glycol dimethacrylate and the J-SNs nanosheet prepared in the step (2), stirring at a certain temperature, adding N, N, N, N, N-pentamethyldiethylenetriamine, copper bromide and ascorbic acid, continuously stirring, carrying out water bath heating reaction, centrifuging after the reaction, collecting a product, washing twice with methanol and acetone, carrying out Soxhlet extraction on the product by using a methanol/hydrochloric acid mixed solution as an eluent, and finally drying to obtain the J-SNs-MIPs nanosheet;
(4) J-SNs-preparation of MMIPPs-Pickering;
taking the J-SNs-MIPs nanosheet prepared in the step (3) as a stable particle, adding a certain amount of span80 for assisting stabilization, and then adding water, toluene, Alg-Na and Fe prepared in the step (1)3O4-NH2Stirring the particles under mechanical stirring at a certain rotating speed to obtain Pickering emulsion A;
taking the J-SNs-MIPs nanosheets prepared in the step (3) again as stable particles, adding a certain amount of span80 for assisting in stabilization, and then adding water, toluene and CaCl2And Fe3O4-NH2Granulating to obtain Pickering emulsion B; adding the emulsion A into the emulsion B to obtain a mixed solution, stirring and mixing under a certain rotation speed condition, stirring under the same rotation speed mechanical stirring, adding ethanol for stirring, centrifuging, washing off toluene, and drying under vacuum to obtain the mosaic type magnetic imprinting adsorbent, which is recorded as J-SNs-MMIPs-Pickering.
2. The method for preparing mosaic-type magnetic imprinting adsorbent of claim 1, wherein in step (3), the ratio of the amounts of 2 '-deoxyadenosine, 5- (2-methoxyvinyl) -2' -deoxyuridine, dimethylsulfoxide and acetonitrile is 1.0g: 4.0-5.0 g: 40-60 mL: 140-160 mL.
3. The preparation method of the mosaic-type magnetic imprinting adsorbent according to claim 1, wherein in the step (3), the dosage ratio of the 2' -deoxyadenosine, the ethylene glycol dimethacrylate and the J-SNs nanosheets is 1.0g: 10-12 mL: 900 and 1100 mg.
4. The method for preparing mosaic-type magnetic blotting adsorbent according to claim 1, wherein in step (3), the dosage ratio of 2' -deoxyadenosine, N, N, N, N-pentamethyldiethylenetriamine, copper bromide and ascorbic acid is 1.0g:1.0mL:70-80mg:60-65 mg.
5. The preparation method of the mosaic-type magnetic imprinting adsorbent according to claim 1, wherein in the step (3), the reaction time of introducing nitrogen is 30-40 min; the time for self-assembly in a dark place is 90-100 min; the stirring temperature under a certain temperature condition is 30 ℃, and the stirring time is 30-40 min; the temperature of the water bath heating reaction is 60-70 ℃, and the time is 12-15 h; the temperature of the drying was 45 ℃.
6. The method for preparing mosaic-type magnetic imprinting adsorbent of claim 1, wherein in step (4), the dosage ratio of J-SNs-MIPs, water and toluene in emulsion A is: 0.225-0.275mL of 1.0mg and 0.35-0.4mL of the total amount of the mixture.
7. The method for preparing mosaic-type magnetic imprinting adsorbent of claim 1, wherein in step (4), said emulsion A contains J-SNs-MIPs, span80, Alg-Na and Fe3O4-NH2The dosage ratio of the components is 1.0mg to 0.01-0.02g to 0.003-0.004g to 0.2-0.3 g.
8. The method for preparing mosaic-type magnetic imprinting adsorbent of claim 1, wherein in step (4), the dosage ratio of J-SNs-MIPs, water and toluene in emulsion B is: 0.35-0.4mL for 1.0mg of 0.225-0.275 mL; J-SNs-MIPs, span80 and CaCl in the emulsion B2And Fe3O4-NH2The dosage ratio of the components is 1.0mg to 0.01-0.02g to 0.015-0.020g to 0.2-0.3 g.
9. The method for preparing the mosaic-type magnetic imprinted adsorbent according to claim 1, wherein the volume ratio of the emulsion A, the emulsion B and the ethanol in the step (4) is 1: 5; the rotating speed of the mechanical stirring is 800rpm, and the stirring time is 30-50 min; and the time for adding the ethanol and stirring is 5-10 min.
10. The mosaic magnetic imprinting adsorbent prepared by the method of any one of claims 1 to 9 is applied to selective adsorption of 2' -deoxyadenosine.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892430A (en) * | 2021-01-15 | 2021-06-04 | 江苏大学 | Method for constructing encapsulated ionic liquid extraction material by Pickering emulsion and application thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202682A1 (en) * | 2003-01-08 | 2004-10-14 | Emrick Todd S. | Liquid-liquid interfacial nanoparticle assemblies |
| WO2010097785A1 (en) * | 2009-02-26 | 2010-09-02 | University College Dublin, National University Of Ireland, Dublin | A method for the selective concentration of a specific low abundance biomolecule |
| CN103608010A (en) * | 2010-08-02 | 2014-02-26 | 中央佛罗里达大学研究基金公司 | Substituted 2-hydroxy-4-(2-(phenylsulfonamido)acetamido)benzoic acid analogs as inhibitors of STAT proteins |
| CN104386672A (en) * | 2014-10-22 | 2015-03-04 | 复旦大学 | Preparation method of graphite oxide alkene materials in dissymmetrical structure |
| CN105440208A (en) * | 2015-12-29 | 2016-03-30 | 江苏大学 | Preparation method and application of acephate molecularly imprinted polymer |
| CN106824139A (en) * | 2017-03-14 | 2017-06-13 | 西北农林科技大学 | It is a kind of that overall column preparation method of the Pickering emulsions as filler is stablized based on nano-particle |
| CN109718745A (en) * | 2019-01-25 | 2019-05-07 | 江苏大学 | A kind of Ianus type magnetic blotting nanometer sheet and its preparation method and application |
| CN109824840A (en) * | 2019-02-28 | 2019-05-31 | 陕西科技大学 | Amphipathic Janus SiO is prepared based on Pickering emulsion method2The preparation method of nanoparticle |
| CN110368826A (en) * | 2019-07-14 | 2019-10-25 | 山东理工大学 | A kind of preparation method of the pickering emulsion of magnetic field and redox double-response |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106749830B (en) * | 2016-12-29 | 2019-12-03 | 江苏大学 | A kind of preparation method of magnetic porous molecularly imprinted polymer |
-
2020
- 2020-02-17 CN CN202010097210.2A patent/CN111318265B/en active Active
- 2020-05-27 WO PCT/CN2020/092493 patent/WO2021164146A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202682A1 (en) * | 2003-01-08 | 2004-10-14 | Emrick Todd S. | Liquid-liquid interfacial nanoparticle assemblies |
| WO2010097785A1 (en) * | 2009-02-26 | 2010-09-02 | University College Dublin, National University Of Ireland, Dublin | A method for the selective concentration of a specific low abundance biomolecule |
| CN103608010A (en) * | 2010-08-02 | 2014-02-26 | 中央佛罗里达大学研究基金公司 | Substituted 2-hydroxy-4-(2-(phenylsulfonamido)acetamido)benzoic acid analogs as inhibitors of STAT proteins |
| CN104386672A (en) * | 2014-10-22 | 2015-03-04 | 复旦大学 | Preparation method of graphite oxide alkene materials in dissymmetrical structure |
| CN105440208A (en) * | 2015-12-29 | 2016-03-30 | 江苏大学 | Preparation method and application of acephate molecularly imprinted polymer |
| CN106824139A (en) * | 2017-03-14 | 2017-06-13 | 西北农林科技大学 | It is a kind of that overall column preparation method of the Pickering emulsions as filler is stablized based on nano-particle |
| CN109718745A (en) * | 2019-01-25 | 2019-05-07 | 江苏大学 | A kind of Ianus type magnetic blotting nanometer sheet and its preparation method and application |
| CN109824840A (en) * | 2019-02-28 | 2019-05-31 | 陕西科技大学 | Amphipathic Janus SiO is prepared based on Pickering emulsion method2The preparation method of nanoparticle |
| CN110368826A (en) * | 2019-07-14 | 2019-10-25 | 山东理工大学 | A kind of preparation method of the pickering emulsion of magnetic field and redox double-response |
Non-Patent Citations (4)
| Title |
|---|
| SUN, YH ET AL: "Molecularly imprinted polymers fabricated using Janus particle-stabilized Pickering emulsions and charged monomer polymerization", 《NEW JOURNAL OF CHEMISTRY》 * |
| WANG, P ET AL: "Janus silica nanosheets-based MMIPs platform for synergetic selective capture and fast separation of 2 "-deoxyadenosine: Two different components segmented on the surface of one object", 《CHEMICAL ENGINEERING JOURNAL》 * |
| XIN YANG ET AL: "Pickering emulsion-enhanced interfacial biocatalysis: tailored alginate microparticles act as particulate emulsifier and enzyme carrier", 《GREEN CHEM.》 * |
| 江龙 等: "基于Pickering乳液的分子印迹技术", 《科学通报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112892430A (en) * | 2021-01-15 | 2021-06-04 | 江苏大学 | Method for constructing encapsulated ionic liquid extraction material by Pickering emulsion and application thereof |
| CN112892430B (en) * | 2021-01-15 | 2022-08-23 | 江苏大学 | Method for constructing encapsulated ionic liquid extraction material by Pickering emulsion and application thereof |
| CN114392725A (en) * | 2021-12-24 | 2022-04-26 | 江苏大学 | Preparation method and application of Janus type single-hole hollow imprinted particle composite gel adsorbent |
| CN114392725B (en) * | 2021-12-24 | 2023-11-10 | 江苏大学 | Preparation method and application of Janus type single-hole hollow imprinting particle composite gel adsorbent |
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| CN115028206B (en) * | 2022-06-21 | 2023-10-31 | 中海石油(中国)有限公司 | Janus two-dimensional magnetic nanoparticle and preparation method and application thereof |
| CN115282943A (en) * | 2022-09-01 | 2022-11-04 | 江苏大学 | Antibacterial and anti-fouling anisotropic tubular imprinting adsorbent and rapid separation application thereof |
| CN115282943B (en) * | 2022-09-01 | 2024-03-19 | 江苏大学 | Antibacterial and anti-fouling anisotropic tubular imprinting adsorbent and rapid separation application thereof |
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