CN109174204A - A kind of preparation method of high efficiency photocatalysis composite material - Google Patents
A kind of preparation method of high efficiency photocatalysis composite material Download PDFInfo
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- CN109174204A CN109174204A CN201810886226.4A CN201810886226A CN109174204A CN 109174204 A CN109174204 A CN 109174204A CN 201810886226 A CN201810886226 A CN 201810886226A CN 109174204 A CN109174204 A CN 109174204A
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- composite material
- high efficiency
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- efficiency photocatalysis
- deionized water
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 27
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 241000894006 Bacteria Species 0.000 claims abstract description 33
- 239000001913 cellulose Substances 0.000 claims abstract description 23
- 229920002678 cellulose Polymers 0.000 claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000008367 deionised water Substances 0.000 claims description 22
- 229910021641 deionized water Inorganic materials 0.000 claims description 22
- 235000015097 nutrients Nutrition 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 5
- 229930195725 Mannitol Natural products 0.000 claims description 5
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 5
- 239000000594 mannitol Substances 0.000 claims description 5
- 235000010355 mannitol Nutrition 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012137 tryptone Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 239000010919 dye waste Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000001802 infusion Methods 0.000 claims description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims description 2
- 238000004659 sterilization and disinfection Methods 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 9
- -1 polypropylene Polymers 0.000 abstract description 9
- 229920001155 polypropylene Polymers 0.000 abstract description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 239000004745 nonwoven fabric Substances 0.000 abstract description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 9
- 239000004750 melt-blown nonwoven Substances 0.000 description 9
- 229920002749 Bacterial cellulose Polymers 0.000 description 6
- 239000005016 bacterial cellulose Substances 0.000 description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 5
- 229960000907 methylthioninium chloride Drugs 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ORXJMBXYSGGCHG-UHFFFAOYSA-N dimethyl 2-methoxypropanedioate Chemical compound COC(=O)C(OC)C(=O)OC ORXJMBXYSGGCHG-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- ZWYDDDAMNQQZHD-UHFFFAOYSA-L titanium(ii) chloride Chemical compound [Cl-].[Cl-].[Ti+2] ZWYDDDAMNQQZHD-UHFFFAOYSA-L 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- 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
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- B01J35/39—
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of preparation methods of high efficiency photocatalysis composite material, belong to technical field of composite materials；The present invention is compound as nano-TiO by bacteria cellulose and melt-blown polypropylene non-woven fabric2Carrier, prevent nano-TiO2Particle gathers, inactivates, it avoids largely falling off, bacteria cellulose, melt-blow nonwoven are combined with the advantages of nano-titanium dioxide, improve the utilization rate to light, it is acted on simultaneously by the great amount of hydroxy group on the surface BC, the absorption property for improving material, can preferably be applied to photocatalysis field.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of preparation method of high efficiency photocatalysis composite material.
Background technique
With the fast development of light and textile industries, the production level of people is increasingly improved, and Clothing Color is bright and colourful, therewith
Come, a large amount of industrial dye waste waters are discharged into the Nature, and water pollution is caused to be on the rise.Therefore, it is dirty to solve water body
Dye the significant problem faced for current people.The method of currently processed waste water is mainly the following, as active carbon is inhaled
Attached method, aeration-oxidizing process, chemical precipitation method (hydroxide precipitating, ferrite precipitating), membrane separation process, ion-exchange etc..But
Occupation area of equipment used in above-mentioned processing method is big, and workflow is long, and energy consumption is high, and the purification effect of some processing methods
Fruit is less desirable.Photocatalysis technology developed rapidly in recent years, all showed to the processing of many organic pollutants
Excellent effect out is a kind of energy-efficient Modern sewage processing technique.
Nano-TiO2It is a kind of white, nontoxic powder.Its advantages mainly have anti-chemistry and photoetch, photocatalytic activity
It is high, in waste water organic matter degradation non-selectivity, it is without secondary pollution the advantages that, be to be currently referred to as possessing broad prospect of application
Photochemical catalyst.Nano-TiO2Photochemical catalyst has efficient, catalysis range extensively and effectively removes the spies such as Some Organic Pollutants
Point has broad application prospects in water process and air purification field.Early stage is to TiO2The research of photochemical catalytic oxidation utilizes mostly
Its colloidal solution and particle suspension system carry out degradable organic pollutant, but removal process is extremely complex.Therefore, preparation stablize,
Securely, efficiently immobilized titanium dioxide be photocatalysis technology functionization one of critical issue.
Melt-blown process principle is to squeeze out polymer melt from die head spinneret orifice, forms melt stream, the stretching of heating
Air is also known as the blowout of air cleft high speed from die head spinneret orifice two sides air duct, stretches to polymer melt stream.Cooling air
Certain position is filled into from two sides below die head, makes fiber crystallisation by cooling, in addition may also set up spray below cooling air device
Mist device, is further rapidly cooled fiber.In receiving device at vacuum suction apparatus is set below lace curtaining, make through excessively high
Fast air-flow stretches the superfine fibre to be formed and equably collects in receiving device into lace curtaining or roll on, by itself bonding or other
Reinforcement means becomes melt-blown non-woven material.It is polymer made of monomer polymerization that polypropylene, which is as propylene, in melt-blown process often
It is isotactic polypropylene, fiber is since with abundant raw material, production cost is low, light, intensity is high, corrosion-resistant, wearability
And elastic recovery is good, not pilling, inexpensive etc. advantage, has been largely used to non-woven cloth.And based on the poly- of melt-blown process production
Fiber alignment is uniform in propylene melt blown non-woven cloth, and at three-dimensional mixed and disorderly shape, fibre fineness is small, and most of fibre finenesses are single, tool
There are porosity abundant and fabulous lipophilicity.In addition, polypropylene melt-blown nonwoven fabric also has acid and alkali-resistance, resistance to organic molten
Agent, resistance to the features such as damaging by worms, is resistance to mildew and rot and nontoxic, add the good cycling processability of polypropylene melt-blown nonwoven fabric, make its tool
There is wide application field.
Melt-blown polypropylene non-woven fabric is prepared by polypropylene, and fibre morphology is thicker, and interfiber pore is larger, and lacks hydroxyl
The functional groups such as base, do not have absorption property, as TiO2When carrier, TiO can not be fixedly secured2Particle.Bacteria cellulose
It (BC) is a kind of bioabsorbable polymer material generated by bacterial fermentation, internal is in nanoscale superfluorescent fiber network structure, is had only
Special property, such as high chemical purity and high-crystallinity, stronger moisture holding capacity, preferable biocompatibility and biodegradable
Property, higher elasticity modulus and there is Modulatory character when tensile strength, biosynthesis, BC chemical formula is (C6H10O5)n, by D- pyrrole
Glucopyranoside glycosides forms the straight-chain polysaccharide of no branched structure parallel to each other, containing abundant by β-Isosorbide-5-Nitrae-glucoside key connection
Hydroxy functional group.Therefore, BC is considered as the novel biomaterial of most application potential, can be used as load nano particle
Template, such as hydroxyapatite, silica, nano-tube, carbon nanotube, titanium dioxide is based on the above advantage, and bacterium is fine
Dimension element starts to be applied to photocatalysis field.
Summary of the invention
According to the above-mentioned deficiencies of the prior art, problem to be solved by this invention is to propose a kind of high efficiency photocatalysis composite wood
The preparation method of material, it is therefore an objective to bacteria cellulose, melt-blow nonwoven be combined with the advantages of nano-titanium dioxide, improve light
Utilization rate, while increasing titanium dichloride load amount, and then effectively promote photocatalysis efficiency.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of preparation method of high efficiency photocatalysis composite material, this method comprises the following steps:
(1) tryptone, yeast powder and mannitol are configured into nutrient solution according to mass ratio 4.5:3:25.5；Circle is meltblown
Nonwoven samples are in nano-TiO2Time of infusion in suspension；
(2) nutrient solution and impregnated sample are poured into conical flask, sealing, which is placed in high-pressure sterilizing pot, to sterilize；
(3) in Biohazard Safety Equipment, original bacteria liquid is pipetted using liquid-transfering gun and is put into cooling nutrient solution, then, will be inoculated with
Good nutrient solution is placed in static culture in shaking table culture case；
(4) cultured bacteria cellulose composite material is taken out, is put into NaOH solution after being rinsed with deionized water,
Soda boiling residual media and bacterium to remove, after soda boiling, are again rushed bacteria cellulose with deionized water in water-bath
It is washed till neutrality, and is put into deionized water and is washed；
(5) it is put into freeze in freeze drier after cleaning the bacteria cellulose composite material after washing with deionized water and do
Dry 19-24h, it is final to obtain high efficiency photocatalysis composite material.
Preferably, step (1) the round melt-blow nonwoven sample grammes per square metre is 35g/m2, nano-TiO2Suspension concentration
For 1-3g/L, dip time 30-90min.
Preferably, autoclave temperature described in step (2) is 126 DEG C, pressure 0.15MP, sterilization time 1h.
Preferably, the amount of step (3) original bacteria liquid pipetted is 10mL, and the time of static culture is 3-5d.
Preferably, the concentration of NaOH described in step (4) is 0.11mol/L, and the temperature of water-bath is 80 DEG C, the soda boiling time
For 8-12h, the temperature of deionized water is 80 DEG C, washing time 8-12h.
A kind of application of the optic catalytic composite material of the preparation method preparation of high efficiency photocatalysis composite material, the material application
In processing photocatalytic degradation of dye waste water.
The medicine have the advantages that
1. bacteria cellulose is as a kind of material that novel environmental-friendly performance is excellent, due to its unique three-dimensional network
Structure can be combined as matrix with most of organic or inorganic materials, have research extensively and application in terms of composite material,
It is significant as nanometer powder carrier effect in the present invention.
2. the present invention is by polypropylene melt spraying in certain density nano-TiO2A period of time is stirred in suspension, keeps it negative
It is loaded with a large amount of nano-TiOs2Particle effectively improves nano-TiO in bacteria cellulose2Content.In incubation, bacteria cellulose encloses
Around melt-blow nonwoven grow, obtain the compound melt-blown non-woven cloth material of bacteria cellulose, make material mechanical performance obtain compared with
It is big to be promoted.Titanium dioxide is greatly improved compared with directly adding using melt-blow nonwoven as nanometer titanium dioxide titanium precursor carrier
Load capacity.
3. the present invention is compound as nano-TiO by bacteria cellulose and melt-blown polypropylene non-woven fabric2Carrier, prevent nanometer
TiO2Particle gathers, inactivates, and avoids largely falling off, the TiO of preparation2Stablize, securely, improves the utilization rate to light, simultaneously
By the great amount of hydroxy group effect on the surface BC, the absorption property of material is improved, photocatalysis field can be preferably applied to.
Detailed description of the invention
Content expressed by this specification attached drawing and the label in figure are briefly described below:
Fig. 1 is uniform load TiO2Bacteria cellulose/melt-blow nonwoven composite material material object picture.
Fig. 2 is bacteria cellulose/melt-blow nonwoven composite material SEM picture (× 10.0K).
Fig. 3 is uniform load TiO2Bacteria cellulose/melt-blow nonwoven composite material SEM picture (× 10.0K).
Specific embodiment
It below by the description to embodiment, is described in further detail, to help those skilled in the art to this hair
Bright inventive concept, technical solution have more complete, accurate and deep understanding.
Embodiment 1
1. tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5；Circle is meltblown
Nonwoven samples (grammes per square metre 35g/m2) in the nano-TiO that concentration is 1g/L260min is impregnated in suspension.
2. the nutrient solution and impregnated sample of 180mL is poured into the conical flask of 500mL, at 126 DEG C after sealing,
Under the conditions of 0.15MP, the 1h that sterilizes is placed in high-pressure sterilizing pot.
3. pipetting 10mL original bacteria liquid in Biohazard Safety Equipment using liquid-transfering gun and being put into cooling nutrient solution.Then, it will connect
The nutrient solution planted is placed in static culture 4d in shaking table culture case.
4. cultured composite bacterial cellulose is taken out, 0.11mol/LNaOH solution is put into after being rinsed with deionized water
In, soda boiling 10h residual media and bacterium to remove in 80 DEG C of water-baths.It, again will with deionized water after soda boiling
Bacteria cellulose is rinsed to neutrality, and is put into 80 DEG C of deionized water and is carried out washing 10h.
5. being put into freeze drier after the composite bacterial cellulose after washing is cleaned with deionized water and being freeze-dried 19-
For 24 hours, high efficiency photocatalysis composite material is finally obtained.
Embodiment 2
1. tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5；Circle is meltblown
Nonwoven samples (grammes per square metre 35g/m2) in the nano-TiO that concentration is 2g/L230min is impregnated in suspension.
2. the nutrient solution and impregnated sample of 180mL is poured into the conical flask of 500mL, at 126 DEG C after sealing,
Under the conditions of 0.15MP, the 1h that sterilizes is placed in high-pressure sterilizing pot.
3. pipetting 10mL original bacteria liquid in Biohazard Safety Equipment using liquid-transfering gun and being put into cooling nutrient solution.Then, it will connect
The nutrient solution planted is placed in static culture 3d in shaking table culture case.
4. cultured composite bacterial cellulose is taken out, 0.11mol/LNaOH solution is put into after being rinsed with deionized water
In, soda boiling 12h residual media and bacterium to remove in 80 DEG C of water-baths.It, again will with deionized water after soda boiling
Bacteria cellulose is rinsed to neutrality, and is put into 80 DEG C of deionized water and is carried out washing 12h.
5. being put into freeze drier after the composite bacterial cellulose after washing is cleaned with deionized water and being freeze-dried 19-
For 24 hours, high efficiency photocatalysis composite material is finally obtained.
Embodiment 3
1. tryptone, yeast powder and mannitol are configured nutrient solution according to mass ratio 4.5:3:25.5；Circle is meltblown
Nonwoven samples (grammes per square metre 35g/m2) in the nano-TiO that concentration is 1g/L230min is impregnated in suspension.
2. the nutrient solution and impregnated sample of 180mL is poured into the conical flask of 500mL, at 126 DEG C after sealing,
Under the conditions of 0.15MP, the 1h that sterilizes is placed in high-pressure sterilizing pot.
3. pipetting 10mL original bacteria liquid in Biohazard Safety Equipment using liquid-transfering gun and being put into cooling nutrient solution.Then, it will connect
The nutrient solution planted is placed in static culture 5d in shaking table culture case.
4. cultured composite bacterial cellulose is taken out, 0.11mol/LNaOH solution is put into after being rinsed with deionized water
In, soda boiling 8h residual media and bacterium to remove in 80 DEG C of water-baths.It, again will be thin with deionized water after soda boiling
Fungin is rinsed to neutrality, and is put into 80 DEG C of deionized water and is carried out washing 8h.
5. being put into freeze drier after the composite bacterial cellulose after washing is cleaned with deionized water and being freeze-dried 19-
For 24 hours, high efficiency photocatalysis composite material is finally obtained.
Photocatalysis performance test
Configuration concentration is the methylene blue solution of 0.5mol/L, is respectively put into 50mL methylene blue solution in 4 test tubes,
Pure melt-blow nonwoven/bacteria cellulose and embodiment 1-3 that quality is 10mg are put into test tube, in the mercury that power is 300W
Under light irradiation, by 120min, a certain amount of methylene blue solution is taken respectively every 20min, tests it at 664nm wavelength
Absorbance size.Test result is as shown in table 1.As shown in Table 1, uniform load TiO2Bacteria cellulose/melt-blow nonwoven
Composite material has good photocatalysis performance.
1 methylene blue degradation rate of table
| Methylene blue degradation rate | |
| Pure melt-blow nonwoven/bacteria cellulose | 33.7% |
| Embodiment 1 | 91.4% |
| Embodiment 2 | 84.2% |
| Embodiment 3 | 80.3% |
The present invention is exemplarily described above, it is clear that present invention specific implementation is not subject to the restrictions described above,
As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out, or not improved this is sent out
Bright conception and technical scheme directly apply to other occasions, within the scope of the present invention.Protection of the invention
Range should be determined by the scope of protection defined in the claims.
Claims (6)
1. a kind of preparation method of high efficiency photocatalysis composite material, which is characterized in that this method comprises the following steps:
(1) tryptone, yeast powder and mannitol are configured into nutrient solution according to mass ratio 4.5:3:25.5；Circle is meltblown non-knit
Cloth sample is made in nano-TiO2Time of infusion in suspension；
(2) nutrient solution and impregnated sample are poured into conical flask, sealing, which is placed in high-pressure sterilizing pot, to sterilize；
(3) in Biohazard Safety Equipment, original bacteria liquid is pipetted using liquid-transfering gun and is put into cooling nutrient solution, it then, will be inoculated
Nutrient solution is placed in static culture in shaking table culture case；
(4) cultured bacteria cellulose composite material is taken out, is put into NaOH solution after being rinsed with deionized water, in water-bath
Soda boiling residual media and bacterium to remove in pot, after soda boiling, again with deionized water by bacteria cellulose rinse to
Neutrality, and be put into deionized water and washed；
(5) it is put into freeze drier and is freeze-dried after cleaning the bacteria cellulose composite material after washing with deionized water
19-24h, it is final to obtain high efficiency photocatalysis composite material.
2. a kind of preparation method of high efficiency photocatalysis composite material according to claim 1, which is characterized in that step (1)
The circle melt-blow nonwoven sample grammes per square metre is 35g/m2, nano-TiO2Suspension concentration is 1-3g/L, dip time 30-
90min。
3. a kind of preparation method of high efficiency photocatalysis composite material according to claim 1, which is characterized in that step (2) institute
The autoclave temperature stated is 126 DEG C, pressure 0.15MP, sterilization time 1h.
4. a kind of preparation method of high efficiency photocatalysis composite material according to claim 1, which is characterized in that step (3) institute
The amount for stating the original bacteria liquid pipetted is 10mL, and the time of static culture is 3-5d.
5. a kind of preparation method of high efficiency photocatalysis composite material according to claim 1, which is characterized in that step (4) institute
The concentration of the NaOH stated is 0.11mol/L, and the temperature of water-bath is 80 DEG C, and the soda boiling time is 8-12h, and the temperature of deionized water is
80 DEG C, washing time 8-12h.
6. a kind of preparation method preparation using a kind of described in any item high efficiency photocatalysis composite materials of claim 1-5
The application of optic catalytic composite material, which is characterized in that the material is applied to processing photocatalytic degradation of dye waste water.
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