CN104532479A - Photocatalysis cellulosic-fiber-based activated carbon nano-fiber composite membrane and preparation method thereof - Google Patents

Photocatalysis cellulosic-fiber-based activated carbon nano-fiber composite membrane and preparation method thereof Download PDF

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CN104532479A
CN104532479A CN201410717882.3A CN201410717882A CN104532479A CN 104532479 A CN104532479 A CN 104532479A CN 201410717882 A CN201410717882 A CN 201410717882A CN 104532479 A CN104532479 A CN 104532479A
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fiber
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carbon nano
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CN104532479B (en
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万军民
杨子昂
胡智文
魏猛
刘建军
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Zhejiang University of Technology ZJUT
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/04—Carbonising or oxidising

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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Abstract

The invention provides a photocatalysis cellulosic-fiber-based activated carbon nano-fiber composite membrane and a preparation method thereof. The method comprises preparing tetrabutyl titanate into faint yellow TiO2 transparent sols, adding the faint yellow TiO2 transparent sols into prepared cellulosic fiber solutions to be reacted sufficiently, stirring the solutions till the solutions are transparent, and subjecting the mixed solutions to electrostatic spinning to prepare the TiO2/ cellulosic-fiber-based composite nano fiber membranes; subjecting the composite nano fiber membranes to pre-oxidation, carbonization and activation to be produced into photocatalysis cellulosic-fiber-based activated carbon nano-fiber composite membranes with efficient absorption and catalyst performances. According to the composite membrane and the preparation method, the preparation method is simple, the obtained composite membrane has the advantage of being high in absorption performance, good in photocatalysis degradation performance and capable of catalyzing organic pollutants in waste water or air.

Description

A kind of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film and preparation method thereof
Technical field
The present invention relates to photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film and preparation method thereof, belong to absorbent charcoal composite material technology of preparing.
Background technology
The process of traditional dyeing and finishing method of wastewater treatment is not ideal, and mainly because Wastewater Dyes molecular structure stabilized, complicated component, percent of decolourization, COD clearance are not high, easily produce secondary pollution.Utilize the photocatalysis performance of semi-conducting material just the organic matter that many chemical methods and bioanalysis cannot be removed can be decomposed into carbon dioxide and water completely at ambient temperature, and not causing secondary pollution, the ultraviolet light contained in its available sunshine and fluorescent lamp makes excitaton source.Current, for degrading in the catalyst of environmental contaminants, titanium dioxide relies on the features such as high, the indissoluble of its photocatalytic activity, nontoxic and cost are low to become most one of photochemical catalyst with application prospect, and has purifying air, killing bacteria, the effects such as degraded hardly degraded organic substance.But traditional nano-TiO 2suspended phase photochemical catalyst easy in inactivation, easily cohesion, the difficult shortcoming reclaimed, therefore find one and have comparatively bigger serface, again with TiO 2the high-efficient carrier material of strong bonded is the key of practical technology.Absorbent charcoal material, as a kind of desirable sorbing material, is grow up on the basis that Carbon fibe technology and activated carbon technology combine.Active carbon has larger pore capacities and specific area, and based on micropore, therefore, is conducive to adsorbate and diffuses in hand-hole and active surface, and active carbon demonstrates higher adsorption capacity and adsorption/desorption speed faster.This active carbon is utilized effectively to adsorb and to remove the dyestuff, slurry, auxiliary agent, finish, soda acid, fiber impurity, inorganic salts etc. in sewage.
Because dyeing waste water is often containing the organic substance such as very high suspended matter and pigment, the process of any monotechnics does not often reach desirable effect.The integrated technique of current membrane separation technique and other water technologies is studied, and plays the advantage of various technology, forms the new technology of dyeing waste water advanced treating.Economically developed, scientific and technical advanced country is in recent years by membrane separation technique in the world, as ultrafiltration (UF), counter-infiltration (RO) and nanofiltration (NF) etc. are applied to the process of printing and dyeing industrial waste water, greatly can reduce energy consumption, reduce investment.Because membrane filtration technique has the advantages such as separative efficiency is high, energy-conservation, equipment is simple, easy to operate, it is made to have very large development potentiality in field of waste water treatment.But current MF and UF film carries out more or less all there is a dirt in sewage disposal process and blocks up problem, this problem is also very serious sometimes, causes water rate degradation, directly has influence on this running efficiency of system and success or failure thereof.The surface chemical structure utilizing activated carbon fiber special and strong physical adsorbability are TiO 2photocatalysis provide the reaction environment of high concentration, efficiently remove organic pollutants with its absorption and catalyzing cooperation effect, significantly improve the reclamation rate of dyeing and printing sewage.Realize dyeing waste water circulating and recovering by photocatalytic active carbon nano fibrous membrane, to the control of water pollutions and the sustainable development of dyeing industry, all there is very positive meaning.
Summary of the invention
The present invention is in order to overcome above-mentioned the deficiencies in the prior art, object there is provided a kind of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film and preparation method thereof, and obtained composite has stronger absorption property and good Photocatalytic Degradation Property in this way.
To achieve these goals, the technical solution used in the present invention is:
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, first butyl titanate is made faint yellow TiO by the method 2vitreosol, then added in the cellulose fibre solution for preparing, constantly stir and make it fully react, transparent to solution, mixed liquor is obtained TiO by electrostatic spinning 2/ cellulosic fibrous substrates composite nano-fiber membrane; Again by TiO 2/ cellulosic fibrous substrates composite nano-fiber membrane, through pre-oxidation, charing and activation process, is prepared into the photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film with efficient adsorption and catalytic performance; The method comprises the following steps:
1) TiO 2 sol preparation: 15 ~ 30 parts of butyl titanates and 5 ~ 15 parts of glacial acetic acid are dissolved in 50 ~ 80 parts of absolute ethyl alcohols, magnetic agitation 0.5 ~ 2h makes it to mix, in the mixed solution of slow instillation 80 ~ 95 parts of absolute ethyl alcohols and 5 ~ 20 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 2 ~ 4h;
2) cellulose fibre solution preparation: be at room temperature dissolved in corresponding solvent by cellulose fibre, being mixed with volume mass mark (g/L) is the solution of 1 ~ 20%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.01: 1 ~ 0.5: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO2/ cellulosic fibrous substrates composite nano-fiber membrane through pre-oxidation, charing and activation process, be prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.
Described cellulosic fibre material is native cellulose fibre and regenerated celulose fibre, and native cellulose fibre comprises flax fibre, bamboo fibre, cotton; Regenerated celulose fibre comprises viscose, Tencel fiber, Lyocell fiber, Modal fiber.
Described step 2) cellulose fibre solvent used is one or more mixed solvent systems in dimethyl sulfoxide (DMSO), dimethyl formamide, dimethylacetylamide, N-methylmorpholine-N-oxide, etamon chloride solution, ammonium thiocyanate solution, triethanolamine, ammonia spirit, alkaline aqueous solution.
Described alkaline aqueous solution is alkali metal hydroxide aqueous solution, is specially NaOH, potassium hydroxide.
Described electrostatic spinning apparatus is made up of high-voltage generator, syringe pump and fiber accepts device; Spinning voltage: 10 ~ 30kV, rate of extrusion: 0.05 ~ 2.0ML/h, accepts distance: 10 ~ 30cm.
Described Pre oxidation controls at 50 ~ 350 DEG C; Activate the H at 5 ~ 20wt% 3pO 4carry out in the KOH solution of solution and 5 ~ 20wt%; Carbonize in tubular type Muffle furnace, (e.g., N in atmosphere of inert gases 2deng), temperature controls 400 ~ 600 DEG C of calcination, to obtain the TiO with catalytic activity 2crystal formation.
Described inert gas is nitrogen, argon gas.
The present invention also comprises the photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film utilizing said method to prepare.
Preparation method's process of the present invention is simple, obtain photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film there is stronger absorption property and good Photocatalytic Degradation Property.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, first butyl titanate is made faint yellow TiO by the method 2vitreosol, then added in the cellulose fibre solution for preparing, constantly stir and make it fully react, transparent to solution, mixed liquor is obtained TiO by electrostatic spinning 2/ cellulosic fibrous substrates composite nano-fiber membrane; Again by TiO 2/ cellulosic fibrous substrates composite nano-fiber membrane, through pre-oxidation, charing and activation process, is prepared into the photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film with efficient adsorption and catalytic performance; Preparation method's process of the present invention is simple, obtain photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film there is stronger absorption property and good Photocatalytic Degradation Property.
Embodiment 1:
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, the method comprises the following steps:
1) TiO 2 sol preparation: 15 parts of butyl titanates and 5 parts of glacial acetic acid are dissolved in 50 parts of absolute ethyl alcohols, magnetic agitation 0.5h makes it to mix, in the mixed solution of slow instillation 80 parts of absolute ethyl alcohols and 5 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 2h;
2) cellulose fibre solution preparation: be at room temperature dissolved in dimethyl sulfoxide (DMSO) by cellulose fibre (flax fibre), being mixed with volume mass mark (g/L) is the solution of 1%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.01: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO2/ cellulosic fibrous substrates composite nano-fiber membrane is through pre-oxidation, charing and activation process, and Pre oxidation is 150 DEG C, at the H of 5wt% 3pO 4activate in the KOH solution of solution and 5wt%; In tubular type Muffle furnace, inert gas N 2carbonize in atmosphere, temperature controls 450 DEG C of calcination, is prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.
Embodiment 2:
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, the method comprises the following steps:
1) TiO 2 sol preparation: 20 parts of butyl titanates and 10 parts of glacial acetic acid are dissolved in 60 parts of absolute ethyl alcohols, magnetic agitation 1h makes it to mix, in the mixed solution of slow instillation 85 parts of absolute ethyl alcohols and 10 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 3h;
2) cellulose fibre solution preparation: be at room temperature dissolved in dimethyl formamide by cellulose fibre (Lyocell fiber), being mixed with volume mass mark (g/L) is the solution of 8%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.1: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO2/ cellulosic fibrous substrates composite nano-fiber membrane is through pre-oxidation, charing and activation process, and Pre oxidation is 180 DEG C, at the H of 10wt% 3pO 4activate in the KOH solution of solution and 10wt%; In tubular type Muffle furnace, carbonize in inert gas (argon gas) atmosphere, temperature controls 450 DEG C of calcination, is prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.
Embodiment 3:
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, the method comprises the following steps:
1) TiO 2 sol preparation: 25 parts of butyl titanates and 15 parts of glacial acetic acid are dissolved in 70 parts of absolute ethyl alcohols, magnetic agitation 1.5h makes it to mix, in the mixed solution of slow instillation 90 parts of absolute ethyl alcohols and 15 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 3h;
2) cellulose fibre solution preparation: be at room temperature dissolved in N-methylmorpholine-N-oxide by cellulose fibre (Modal fiber), being mixed with volume mass mark (g/L) is the solution of 15%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.3: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO2/ cellulosic fibrous substrates composite nano-fiber membrane is through pre-oxidation, charing and activation process, and Pre oxidation is 200 DEG C, at the H of 15wt% 3pO 4activate in the KOH solution of solution and 15wt%; In tubular type Muffle furnace, inert gas N 2carbonize in atmosphere, temperature controls 500 DEG C of calcination, is prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.
Embodiment 4:
A preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, the method comprises the following steps:
1) TiO 2 sol preparation: 30 parts of butyl titanates and 15 parts of glacial acetic acid are dissolved in 80 parts of absolute ethyl alcohols, magnetic agitation 2h makes it to mix, in the mixed solution of slow instillation 95 parts of absolute ethyl alcohols and 20 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 4h;
2) cellulose fibre solution preparation: at room temperature cellulose fibre (bamboo fibre) is dissolved in ammonia/ammonium thiocyanate solution (NH 3/ NH 4sCN/H 2o system) in, being mixed with volume mass mark (g/L) is the solution of 8%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.5: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO 2/ cellulosic fibrous substrates composite nano-fiber membrane is through pre-oxidation, charing and activation process, and Pre oxidation is 250 DEG C, at the H of 20wt% 3pO 4activate in the KOH solution of solution and 20wt%; In tubular type Muffle furnace, carbonize in inert gas (argon gas) atmosphere, temperature controls 550 DEG C of calcination, is prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.

Claims (8)

1. a preparation method for photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film, first butyl titanate is made faint yellow TiO by the method 2vitreosol, then added in the cellulose fibre solution for preparing, constantly stir and make it fully react, transparent to solution, mixed liquor is obtained TiO by electrostatic spinning 2/ cellulosic fibrous substrates composite nano-fiber membrane; Again by TiO 2/ cellulosic fibrous substrates composite nano-fiber membrane, through pre-oxidation, charing and activation process, is prepared into the photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film with efficient adsorption and catalytic performance; The method comprises the following steps:
1) TiO 2 sol preparation: 15 ~ 30 parts of butyl titanates and 5 ~ 15 parts of glacial acetic acid are dissolved in 50 ~ 80 parts of absolute ethyl alcohols, magnetic agitation 0.5 ~ 2h makes it to mix, in the mixed solution of slow instillation 80 ~ 95 parts of absolute ethyl alcohols and 5 ~ 20 parts of distilled water, control buret and drip speed, sealing stirring obtains faint yellow TiO 2vitreosol, still aging 2 ~ 4h;
2) cellulose fibre solution preparation: be at room temperature dissolved in corresponding solvent by cellulose fibre, being mixed with volume mass mark (g/L) is the solution of 1 ~ 20%, and magnetic agitation is transparent to solution;
3) cellulosic fibrous substrates composite nano-fiber membrane preparation: by step 1) obtained titania solution and step 2) the cellulose fibre solution that obtains mixes according to the mass ratio 0.01: 1 ~ 0.5: 1 of solute, abundant reaction, be stirred to and mix completely and solution is transparent, obtain TiO by electrostatic spinning apparatus 2/ cellulosic fibrous substrates composite nano-fiber membrane;
4) active carbon composite nano-fiber membrane preparation: by step 3) obtained TiO 2/ cellulosic fibrous substrates composite nano-fiber membrane, through pre-oxidation, charing and activation process, is prepared into photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film.
2. the preparation method of a kind of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 1, it is characterized in that: described cellulosic fibre material is native cellulose fibre and regenerated celulose fibre, and native cellulose fibre comprises flax fibre, bamboo fibre, cotton; Regenerated celulose fibre comprises viscose, Tencel fiber, Lyocell fiber, Modal fiber.
3. the preparation method of a kind of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 1, is characterized in that: described step 2) cellulose fibre solvent used is one or more mixed solvent systems in dimethyl sulfoxide (DMSO), dimethyl formamide, dimethylacetylamide, N-methylmorpholine-N-oxide, etamon chloride solution, ammonium thiocyanate solution, triethanolamine, ammonia spirit, alkaline aqueous solution.
4. the preparation method of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 3, is characterized in that: alkaline aqueous solution is alkali metal hydroxide aqueous solution, is specially NaOH, potassium hydroxide.
5. the preparation method of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 1, is characterized in that: described electrostatic spinning apparatus is made up of high-voltage generator, syringe pump and fiber accepts device; Spinning voltage: 10 ~ 30kV, rate of extrusion: 0.05 ~ 2.0ML/h, accepts distance: 10 ~ 30cm.
6. the preparation method of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 1, is characterized in that: described Pre oxidation controls at 50 ~ 350 DEG C; Activate the H at 5 ~ 20wt% 3pO 4carry out in the KOH solution of solution and 5 ~ 20wt%; Carbonize in tubular type Muffle furnace, (e.g., N in atmosphere of inert gases 2deng), temperature controls 400 ~ 600 DEG C of calcination, to obtain the TiO with catalytic activity 2crystal formation.
7. the preparation method of photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film according to claim 6, is characterized in that: described inert gas is nitrogen, argon gas.
8. the photocatalytic fiber cellulose fiber matrix activated carbon nano-fiber composite film that according to any one of claim 1-7 prepared by method.
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CN105413752A (en) * 2015-11-05 2016-03-23 浙江理工大学 Preparation method of photo-catalyzed collodion cellulose-based activated carbon nano-fiber composite membrane
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