CN106519306A - Cellulose based Ag @ ZnO nano composite hydrogel and preparation method thereof - Google Patents
Cellulose based Ag @ ZnO nano composite hydrogel and preparation method thereof Download PDFInfo
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- 239000001913 cellulose Substances 0.000 title claims abstract description 90
- 229920002678 cellulose Polymers 0.000 title claims abstract description 90
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000017 hydrogel Substances 0.000 title abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 63
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000004202 carbamide Substances 0.000 claims description 27
- 235000013877 carbamide Nutrition 0.000 claims description 27
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 19
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 239000003125 aqueous solvent Substances 0.000 claims description 15
- GYFSXXFOVVPFSP-UHFFFAOYSA-N sodium zinc oxygen(2-) Chemical compound [O-2].[Na+].[Zn+2] GYFSXXFOVVPFSP-UHFFFAOYSA-N 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 13
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003993 interaction Effects 0.000 abstract description 5
- 239000004065 semiconductor Substances 0.000 abstract description 3
- 230000033558 biomineral tissue development Effects 0.000 abstract description 2
- 239000000975 dye Substances 0.000 abstract 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 14
- 229910052709 silver Inorganic materials 0.000 description 13
- 239000004332 silver Substances 0.000 description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 11
- 239000000835 fiber Substances 0.000 description 11
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 11
- 229910001948 sodium oxide Inorganic materials 0.000 description 11
- 239000011701 zinc Substances 0.000 description 11
- 229910052725 zinc Inorganic materials 0.000 description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- 239000002105 nanoparticle Substances 0.000 description 8
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- 241000209094 Oryza Species 0.000 description 6
- 230000000844 anti-bacterial effect Effects 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 150000004679 hydroxides Chemical class 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 241000549556 Nanos Species 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003385 bacteriostatic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920005615 natural polymer Polymers 0.000 description 2
- 239000004246 zinc acetate Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- 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
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- 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
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
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- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0806—Silver
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
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Abstract
The invention discloses a cellulose based Ag @ ZnO nano composite hydrogel and a preparation method thereof. The cellulose based Ag @ ZnO nano composite hydrogel uses porous cellulose as a bracket, nano ZnO is distributed in a cellulose matrix, and the surface of the nano ZnO is coated with nano Ag; by clever use of biological mineralization effect and ZnO semiconductor material light responsive property, the cellulose based ZnO nano composite hydrogel can be prepared by a simple preparation method under mild conditions; and interaction of internal components of the cellulose based ZnO nano composite hydrogel constructed by use of interfacial interaction is good, so that the cellulose based Ag @ ZnO nano composite hydrogel has excellent antimierobial performance and properties of photocatalytic degradation of organic dyes.
Description
Invention field
The present invention relates to a kind of cellulose base Ag@ZnO nano composite aquogels and preparation method thereof, belong to composite neck
Domain.
Technical background
Cellulose is the most natural polymer of storage capacity in the world, is a kind of critically important regenerated resources, to environment friend
Good, the development of bio-compatible and functional material plays an important role.In recent years, cellulose and Nanocomposites are obtained into new multiple
Condensation material becomes focus, and the nanoparticle of heterojunction structure has been attracted widely due to its latent effect in nano-device
Concern.Wherein metal-semiconductor is then most conventional heterojunction structure, and they possess the light of uniqueness, and electricity is biomedical and catalysis
Characteristic.Nano zine oxide is that, with antibacterial and light-catalysed effect, which has the spy not available for common metal as quasiconductor
Property.The chemically and physically characteristic that Nano silver grain is projected due to which, is often doped in material.Therefore, prepare Ag/ZnO heterogeneous
Structure nano particle, then be compound on certain carrier composite is obtained, the anti-microbial property of material can be greatly improved with
And photocatalysis performance.However, cellulose has not antibacterial, biological activity differs from two big shortcomings, Ag/ZnO Nanocomposites is arrived
Become a difficult point on cellulose.Research shows (Cellulose 201522:Ag/ZnO nanoparticles are being prepared 1275-1293)
When, the method for generally adopting is, from the beginning of zinc acetate, to be first added thereto to 80 DEG C of stirrings of sodium hydroxide and obtain zinc hydroxide, then
Add silver nitrate and be stirred vigorously and obtain Ag/ZnO nanoparticles.By itself and cellulose compound tense, cellulose need to be carried out pre- place
Reason (Molecules 2013,18,6269-6280)：First cellulose is added in concentrated sulphuric acid and is aoxidized and destroyed its structure,
Again dilute with water, be centrifuged, dialysing to neutrality obtains nano-cellulose, then by nano-cellulose and zinc acetate, silver nitrate, hydrogen-oxygen
Change sodium water solution mixing high temperature is stirred vigorously and obtains cellulose/Ag/ZnO nano composite materials.Said method exists significantly scarce
Point and deficiency：1) preparation process is harsh, it is often necessary to the condition such as high temperature, concentrated acid, is not easy to industrialization；3) cellulose for obtaining/
In Ag/ZnO nano composite materials, the distribution of nanoparticle is not easy to control, is such as difficult to nanoparticle embedded in selection part orientation
Son.
Technical problem to be solved：Cellulose is the most abundant natural polymer of nature reserves, cheap, but is lacked
Weary feature, introduces the nanoparticles such as Ag, ZnO and can preferably solve this defect.But the cellulose base Ag/ for having reported
The method of ZnO nano composite is excessively complicated, loaded down with trivial details, and Ag/ZnO nanoparticles are difficult to control in the distribution of cellulose matrix
System.
The content of the invention
The present invention be directed to the deficiencies in the prior art, it is proposed that a kind of cellulose base Ag@ZnO nanos compound hydrogel materials and
Its preparation method：Using hydrogen bond interfacial interaction, from common solution, temperate condition, straightforward procedure are obtained cellulose base Ag/
ZnO nano composite, obtained nano composite material have the functions such as excellent antibacterial and photocatalytically degradating organic dye.
A kind of cellulose base Ag@ZnO nano composite aquogels, using porous cellulose as support, nano-ZnO is distributed in fibre
In the plain substrate of dimension, nanometer Ag is coated on nano-ZnO surface.
A kind of preparation method of described cellulose base Ag@ZnO nano composite aquogels, the method specifically include following step
Suddenly：
Step one：Prepare NaOH, carbamide, Zinc sodium oxide (Na2ZnO2). aqueous solvent and be simultaneously cooled to -12～-15 DEG C in advance, wherein aqueous solvent by 6～
10wt%NaOH, 0.5～1.8wt% Zinc sodium oxide (Na2ZnO2) ies, 5～15wt% carbamide and water composition；
Step 2：Dissolve which NaOH of cellulose immersion pre-cooling, carbamide, Zinc sodium oxide (Na2ZnO2). aqueous solvent, quick stirring；
Step 3：By the solution cast film formation after dissolving and immerse in water, ethanol, ethylene glycol or glycerol solidify be obtained fibre
The plain base ZnO nano composite aquogel of dimension；
Step 4：Obtained cellulose base ZnO nano composite aquogel is immersed into 1 × 10-5～5 × 10-5The nitre of mol/L
In sour silver solution and using the ultra violet lamp 2～8 hours of 10～50W, a kind of cellulose base Ag@ZnO nanos are finally obtained again
Heshui gel；
A kind of cellulose base Ag@ZnO nano composite aquogels for obtaining, receive when cellulose base ZnO is irradiated using ultraviolet
Rice composite aquogel single side surface, the nanometer Ag for obtaining only is distributed in the one side with UV contact, not with UV contact
One side does not contain nanometer Ag；The particle diameter of nano-ZnO is 40～70nm, and content is 5～15wt%；The particle diameter of nanometer Ag be 10～
30nm, content are 3～7wt%.
Compared with the prior art compared with having marked improvement using technical solution of the present invention, and beneficial effect can be obtained：1) this
The bright optical Response for cleverly utilizing biomineralization and ZnO semi-conducting materials, under temperate condition, straightforward procedure prepares fine
The plain base ZnO nano composite aquogel of dimension；2) the cellulose base ZnO nano composite aquogel for obtaining is built using interfacial interaction
There is between internal each component preferably interaction, therefore with excellent antibacterial and photocatalytically degradating organic dye performance.
Description of the drawings
Fig. 1 is cellulose base Ag@ZnO nano composite aquogel structural representations.
Specific implementation method
Technical scheme is further illustrated below in conjunction with specific embodiment.
As shown in figure 1, a kind of cellulose base Ag@ZnO nano composite aquogels, it is characterised in that：Made with porous cellulose
For support, nano-ZnO is distributed in cellulose matrix, and nanometer Ag is coated on nano-ZnO surface.
The particle diameter of described nano-ZnO is 40～70nm, and content is 5～15wt%.
Embodiment 1
First step configuration NaOH, carbamide, Zinc sodium oxide (Na2ZnO2). aqueous solvent are simultaneously refrigerated to -15 DEG C, and combination aqueous systems are by 7wt% hydroxides
Sodium, 0.5wt% Zinc sodium oxide (Na2ZnO2) ies, 5wt% carbamide and water composition；Cellulose is immersed the NaOH of pre-cooling, carbamide, Zinc sodium oxide (Na2ZnO2). water by second step
Solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and immerses the prepared fiber of solidification in ethylene glycol
Plain base ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 1 × 10 by the 4th step-5mol/L
Silver nitrate solution in and using the ultra violet lamp 2 hours of 10W, a kind of cellulose base Ag@ZnO nano Compound Waters are finally obtained
Gel.
Obtained hydrogel is constructed and is formed by cellulose nanometer fento, nano-ZnO, nanometer silver and water, and wherein cellulose is received
A diameter of 40nm of rice fiber, the particle diameter of nano-ZnO is 70nm, and its content is 5wt%；The particle diameter of nanometer silver is 30nm, and which contains
Measure as 3wt%；Gained hydrogel has photocatalysiss, and concentration is dropped on hydrogel in day illumination for 30mg/L rhodamine Bs
Penetrate lower 3 hours and just can fade, with automatically cleaning effect.
Embodiment 2
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -12 DEG C, and combination aqueous systems are by 7wt% hydroxides
Sodium, 1wt% Zinc sodium oxide (Na2ZnO2) ies, 12wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). water of pre-cooling
Solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and is immersed in the water the prepared cellulose base of solidification
ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 1.5 × 10 by the 4th step-5Mol/L's
In silver nitrate solution and using the ultra violet lamp 2 hours of 30W, a kind of cellulose base Ag@ZnO nano compound water congealings are finally obtained
Glue.
Obtained hydrogel is constructed and is formed by cellulose nanometer fento, nano-ZnO, nanometer silver and water, and wherein cellulose is received
A diameter of 40nm of rice fiber, the particle diameter of nano-ZnO is 65nm, and its content is 7wt%；The particle diameter of nanometer silver is 25nm, and which contains
Measure as 4wt%；Gained hydrogel has photocatalysiss, and concentration is dropped on hydrogel in day illumination for 30mg/L rhodamine Bs
Penetrate lower 2.5 hours and just can fade, with automatically cleaning effect.
Embodiment 3
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -13 DEG C, and combination aqueous systems are by 8wt% hydroxides
Sodium, 1.2wt% Zinc sodium oxide (Na2ZnO2) ies, 8wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). water of pre-cooling
Solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and is immersed in the water the prepared cellulose base of solidification
ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 2.5 × 10 by the 4th step-5Mol/L's
In silver nitrate solution and using the ultra violet lamp 2 hours of 50W, a kind of cellulose base Ag@ZnO nano compound water congealings are finally obtained
Glue.
Obtained hydrogel is constructed and is formed by cellulose nanometer fento, nano-ZnO, nanometer silver and water, and wherein cellulose is received
A diameter of 30nm of rice fiber, the particle diameter of nano-ZnO is 50nm, and its content is 9wt%；The particle diameter of nanometer silver is 20nm, and which contains
Measure as 5wt%；Gained hydrogel has photocatalysiss, and concentration is dropped on hydrogel in day illumination for 30mg/L rhodamine Bs
Penetrate lower 2.0 hours and just can fade, with automatically cleaning effect.
Embodiment 4
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -12 DEG C, and combination aqueous systems are by 10wt% hydrogen-oxygens
Change sodium, 1.5wt% Zinc sodium oxide (Na2ZnO2) ies, 12wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/zincic acid of pre-cooling
Sodium aqueous solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and is immersed in the water the prepared fiber of solidification
Plain base ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 4 × 10 by the 4th step-5mol/L
Silver nitrate solution in and using the ultra violet lamp 4 hours of 50W, a kind of cellulose base Ag@ZnO nano Compound Waters are finally obtained
Gel.
Obtained hydrogel is constructed and is formed by cellulose nanometer fento, nano-ZnO, nanometer silver and water, and wherein cellulose is received
A diameter of 30nm of rice fiber, the particle diameter of nano-ZnO is 45nm, and its content is 11wt%；The particle diameter of nanometer silver is 10nm, and which contains
Measure as 6wt%；Gained hydrogel has photocatalysiss, and concentration is dropped on hydrogel in day illumination for 30mg/L rhodamine Bs
Penetrate lower 1.5 hours and just can fade, with automatically cleaning effect.
Embodiment 5
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -15 DEG C, and combination aqueous systems are by 6wt% hydroxides
Sodium, 1.8wt% Zinc sodium oxide (Na2ZnO2) ies, 15wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). of pre-cooling
Aqueous solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and is immersed in the water the prepared cellulose of solidification
Base ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 5 × 10 by the 4th step-5Mol/L's
In silver nitrate solution and using the ultra violet lamp 4 hours of 50W, a kind of cellulose base Ag@ZnO nano compound water congealings are finally obtained
Glue.
Obtained hydrogel is constructed and is formed by cellulose nanometer fento, nano-ZnO, nanometer silver and water, and wherein cellulose is received
A diameter of 30nm of rice fiber, the particle diameter of nano-ZnO is 40nm, and its content is 15wt%；The particle diameter of nanometer silver is 10nm, and which contains
Measure as 7wt%；Gained hydrogel has photocatalysiss, and concentration is dropped on hydrogel in day illumination for 30mg/L rhodamine Bs
Penetrate lower 1.0 hours and just can fade, with automatically cleaning effect.
Embodiment 6
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -15 DEG C, and combination aqueous systems are by 7wt% hydroxides
Sodium, 0.5wt% Zinc sodium oxide (Na2ZnO2) ies, 5wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). water of pre-cooling
Solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and immerses the prepared fiber of solidification in ethylene glycol
Plain base ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 1 × 10 by the 4th step-5mol/L
Silver nitrate solution in and using the ultra violet lamp 8 hours of 20W, a kind of cellulose base Ag@ZnO nano Compound Waters are finally obtained
Gel.
Obtained cellulose base Ag@ZnO nanos composite aquogels are by cellulose nanometer fento, nano-ZnO, nanometer silver and water
Construct and form, wherein cellulose nano-fibrous a diameter of 40nm, the particle diameter of nano-ZnO is 70nm, and its content is 5wt%；Receive
The particle diameter of meter Yin is 30nm, and its content is 3wt%；Bacteriostatic experiment is done to gained compound hydrogel material, when 0.5g nanometers is multiple
Heshui gel immersion 100ml concentration is 3.0 × 108When in the E. coli clones solution of CFU/mL, antibacterial 30 minutes is just complete
It is complete to kill.
Embodiment 7
The first step configures NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). aqueous solvent and is refrigerated to -15 DEG C, and combination aqueous systems are by 7wt% hydroxides
Sodium, 0.5wt% Zinc sodium oxide (Na2ZnO2) ies, 5wt% carbamide and water composition；Cellulose is immersed second step the NaOH/ carbamide/Zinc sodium oxide (Na2ZnO2). water of pre-cooling
Solvent, quick stirring dissolve which；3rd step is by the solution cast film formation after dissolving and immerses the prepared fiber of solidification in ethylene glycol
Plain base ZnO nano composite aquogel；Obtained cellulose base ZnO nano composite aquogel is immersed 5 × 10 by the 4th step-5mol/L
Silver nitrate solution in and using the ultra violet lamp 4 hours of 50W, a kind of cellulose base Ag@ZnO nano Compound Waters are finally obtained
Gel.
Obtained cellulose base Ag@ZnO nanos composite aquogels are by cellulose nanometer fento, nano-ZnO, nanometer silver and water
Construct and form, wherein cellulose nano-fibrous a diameter of 30nm, the particle diameter of nano-ZnO is 40nm, and its content is 5wt%；Receive
The particle diameter of meter Yin is 10nm, and its content does bacteriostatic experiment for 5wt% to gained compound hydrogel material, when 0.5g is nano combined
Hydrogel immersion 100ml concentration is 3.0 × 108When in the S. aureus colonies solution of CFU/mL, antibacterial 30 minutes is just
Killed completely.
Claims (4)
1. a kind of cellulose base Ag@ZnO nano composite aquogels, it is characterised in that：Using porous cellulose as support, nanometer
ZnO is distributed in cellulose matrix, and nanometer Ag is coated on nano-ZnO surface.
2. a kind of cellulose base Ag@ZnO nano composite aquogels according to claim 1, it is characterised in that：Described receives
The particle diameter of rice ZnO is 40～70nm, and content is 5～15wt%.
3. a kind of cellulose base Ag@ZnO nano composite aquogels according to claim 1, it is characterised in that：Nanometer Ag
Particle diameter is 10～30nm, and content is 3～7wt%.
4. the preparation method of a kind of cellulose base Ag@ZnO nano composite aquogels according to claim 1, the method tool
Body is comprised the following steps：
Step one：Prepare NaOH, carbamide, Zinc sodium oxide (Na2ZnO2). aqueous solvent and be cooled to -12～-15 DEG C in advance, wherein aqueous solvent is by 6～10wt%
NaOH, 0.5～1.8wt% Zinc sodium oxide (Na2ZnO2) ies, 5～15wt% carbamide and water composition；
Step 2：Dissolve which NaOH of cellulose immersion pre-cooling, carbamide, Zinc sodium oxide (Na2ZnO2). aqueous solvent, quick stirring；
Step 3：By the solution cast film formation after dissolving and immerse in water, ethanol, ethylene glycol or glycerol solidify be obtained cellulose
Base ZnO nano composite aquogel；
Step 4：Obtained cellulose base ZnO nano composite aquogel is immersed into 1 × 10-5～5 × 10-5The silver nitrate of mol/L is molten
In liquid and using the ultra violet lamp 2～8 hours of 10～50W, a kind of cellulose base Ag@ZnO nano compound water congealings are finally obtained
Glue.
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