CN107570214A - Possesses the preparation method of the paper substrate bismuth ferrite composite of multiphase adsoption catalysis function - Google Patents
Possesses the preparation method of the paper substrate bismuth ferrite composite of multiphase adsoption catalysis function Download PDFInfo
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Abstract
The invention provides a kind of preparation method for the paper substrate bismuth ferrite composite for possessing multiphase adsoption catalysis function.Methods described is carried out as follows：1st, bismuth ferrite is prepared using hydro-thermal method or sol-gal process（BiFeO3）Nano particle；2nd, string suspension is prepared；3rd, bismuth ferrite is prepared using hydro-thermal method or sol-gal process（BiFeO3）Paper-based composite material.The present invention is used as carrier using the interlaced plies of string, by nanometer bismuth ferrite particle in dispersed thereon and load, the reunion of bismuth ferrate nano particle can be avoided, so as to ensure absorption and catalytic activity, used string belongs to porous material, with superpower absorption property, strong absorption will necessarily produce good catalytic degradation effect；Strong absorption and catalytic performance of the present invention using the catalyst, realize the efficient degradation and mineralising to organic pollution.
Description
Technical field
The present invention relates to technical field of sewage, is related specifically to the paper substrate ferrous acid for possessing multiphase adsoption catalysis function
The preparation method of bismuth composite.
Background technology
China is the country that water resource lacks, and water resource pollution is more serious so that Proposals of Water Resources is more severe
Situation.In industrial enterprise's waste discharge, the influence of the presence of persistent organic pollutants to water environment is very big, so, it is right
Organic pollution in industrial wastewater carries out advanced treating to realize qualified discharge, in addition can reuse be current extremely urgent
Task.
Traditional organic pollutant removal technology includes physical method, microorganism and enzyme treatment technique etc..Physical method master
If being separated pollutant with water body using means such as filtering, absorption, and it is transferred in other media, is practically without realization pair
The thorough degraded of organic pollution materials present in environment and mineralising.Biologic treating technique is mainly with microorganism and enzyme treatment technique
To represent, this method is primarily adapted for use in the relatively low pollutant of effective processing toxicity or concentration, and for more highly toxic organic matter
Treatment effect is limited, and process cycle is long, or even there is also in processing procedure asking for microorganism poisoning or enzyme inactivation
Topic, its application in practice is caused to be restricted.
With the continuous development of water technology, it has been found that can be effective using oxidant, electricity, illumination, catalyst etc.
Activate H2O2And O2Deng Green Oxidant, so as to produce the extremely strong free radical of activity (mainly OH) in the reaction.Wherein OH
Standard oxidationreduction potential be 2.8V, there is very strong oxidability, can be by adding when it is acted on organic pollution
The effects such as conjunction, substitution, electronics transfer, scission of link, open loop make the larger molecular organicses oxidative degradation of difficult degradation turn into low toxicity or nothing
The small molecule of poison, or even directly it is decomposed into CO2And H2O, reach the purpose of harmless treatment, here it is high-level oxidation technology.It is high
Level oxidation technology mainly includes Fenton or class Fenon oxidation technologies (Masomboon N, Ratanatamskul C, Lu M
C. Chemical oxidation of 2,6-dimethylaniline in the Fenton process. Environ. Sci. Technol.2009, 43: 8269-8634; Feng J Y, Hu X J, Yue P L. Discoloration
and mineralization of orange II using different heterogeneous catalysts
containing Fe: a comparative study. Environ. Sci. Technol.2004, 38: 5773-
5778.), photocatalysis oxidation technique (Linsebigler A, Lu G, Yates J. Photocatalysis on TiO2
surface: principles, mechanisms, and selected results. Chem. Rev.1995, 95:
735-758; Wang N, Chen Z F, Zhu L, et al. Synergistic effects of cupric and
fluoride ions on photocatalytic degradation of phenol. J. Photochem. Photobiol. A: Chem.2007, 191:193-200.), ultrasonic radiation oxidation technology (Chowdhury P,
Viraraghavan T. Sonochemical degradation of chlorinated organic compounds,
phenolic compounds and organic dyes-A review. Sci. Total Environ.2009, 407:
2474-2492.) and ozonation technology (Qiang Z M, Liu C, Dong B Z, et al. Degradation
mechanism of alachlor during direct ozonation and O3/H2O2 advanced oxidation
process. Chemosphere2010, 78:517-526.) etc..Fenton oxidation method include homogeneous Fenton reaction and
Multiphase Fenton is reacted, and homogeneous Fenton reacting middle catalysts, oxidant and pollutant are in same phase, but are being reacted
Easily precipitation is produced in journey, it is necessary to which more man power and materials are handled it, therefore the reaction requires higher to pH value.It is more
Phase Fenton reacting middle catalysts and other reactants are not in same phase, so as to overcome homogeneous Fenton reactions not
Foot, but study the catalytic activation H for finding this kind of reaction2O2Efficiency need further improve.Photocatalysis technology is mainly using purple
Outer light or visible light catalytic produce light induced electron and hole, reduction or oxidation pollution degradation using light induced electron or hole
Thing, but the problem of inefficient is still had when handling relatively stable pollutant only with photocatalysis method.Ultrasonic Irradiation
Research in terms of pollutant is handled has certain progress, but produces the extra equipment of energy demand, and cost is higher, and energy
Utilization ratio it is also not high.Application of the ozonation technology in terms of pollutant is handled also is increasingly subject to pay attention to, but the production of ozone
This is higher for generation, and the subsequent contamination problems demand of excessive ozone solves.
With the continuous development of high-level oxidation technology, the development of light-Fenton catalysis techniques is of increasing concern.The technology will
Light-catalyzed reaction and chemical catalysis reaction are combined, and the advantages of using the two, substantially increase the efficiency of reaction, and condition temperature
It is strong, applied widely with, oxidability, therefore turned into research both at home and abroad using method processing difficult degradation toxicity organic pollution
Focus.The catalyst system and catalyzing success goes the key of removal organic polluter to have photocatalysis and multiphase Fenton catalytic performance
The selection of catalyst.Ca-Ti ore type nanometer bismuth ferrite has good chemical stability, stronger class Fenton catalytic capability and one
Fixed photo-catalysis capability and it is safe and non-toxic the features such as, in addition, the material also has certain magnetic so that it is easy to recovery again
Utilize, therefore its application in terms of catalytic degradation organic pollution is increasingly subject to the concern of people.However, researcher is in ferrous acid
It has been found that many problems during the use of bismuth, because bismuth ferrite is in nano-scale, therefore easy group in use
It is poly- so that particle diameter increases, and reduces catalytic efficiency and degradation effect, while its adsorption capacity also needs further to be improved.Therefore,
People prepare compound ferrous acid bismuth catalyst using carriers such as graphenes, achieve certain effect improved effect.But at present
Remain, effect not satisfactory the problem of higher in carrier cost.Therefore, a kind of inexpensive while and can is selected to significantly improve bismuth ferrite
The absorption of composite catalyst and the carrier of catalytic performance, the height with higher absorption and visible ray-class Fenton catalytic performance is made
It is urgent problem to be solved to imitate multifunctional material.
The content of the invention：
It is an object of the invention to provide a kind of preparation side for the paper substrate bismuth ferrite composite for possessing multiphase adsoption catalysis function
Method.
The present invention design philosophy be：Being prepared first using hydro-thermal method or sol-gel process has visible light catalytic performance
High activity multiphase-fenton fenton catalyst Ca-Ti ore type bismuth ferrite, its nanometer particle size causes it to have higher specific surface area and suction
Attached performance, due to energy and H2O2Fully contact make it that catalytic activity is higher.On this basis using the quick kayser method of forming by itself and
String is compound, so as to which the paper-based composite material of bismuth ferrite be made.In the process, using polyethyleneimine（PEI）As
Retention agent, improve the combination between ferrous acid bismuth catalyst and string；Using polyethyleneimine as wet strength agent, improve
Intensity of the composite in water body so that the presence (as shown in Figure 1) that bismuth ferrite can be stablized in the composite.
To achieve the above object, the technical scheme is that：
A kind of preparation method for the paper substrate bismuth ferrite composite for possessing multiphase adsoption catalysis function, methods described is as follows
Carry out：
1st, bismuth ferrite is prepared using hydro-thermal method or sol-gel process（BiFeO3）Nano particle：
A, bismuth ferrite is prepared using hydro-thermal method（BiFeO3）Nano particle：
Bismuth ferrite（BiFeO3）The preparation of nano particle：Measure 30-50 mL distilled water to be placed in container, add 10-15 mL matter
The salpeter solution of amount fraction 68% is diluted, and weighs 0.005-0.006 mol bismuth nitrates and 0.005-0.006 mol ferric nitrates,
Pour into the salpeter solution after dilution, stirring and dissolving obtains mixed liquor, weighs 33-40 g potassium hydroxide, is dissolved in water, is transferred to
Constant volume in 50 mL volumetric flasks, then the solution for having configured potassium hydroxide is added in above-mentioned mixed liquor, being stirred continuously makes in solution
The precipitation of brown is generated, solution is filtered with conical hopper, obtains tan precipitate, and with water washing is distilled 5-8 times, precipitation is added
Enter into 40-45 mL potassium hydroxide solutions and stir, obtained suspension is poured into 50 mL stainless steel cauldron, juxtaposition
10-12 hours are reacted at 200 DEG C in Muffle furnace, waits it to naturally cool to room temperature taking-up, obtained solution is filtered,
Again with after distillation water washing 4-6 times, it is put into 70-80 DEG C of baking oven and dries 4-6 hours, you can obtain bismuth ferrite（BiFeO3）
Nano particle finished product；
B, bismuth ferrite is prepared using sol-gel process（BiFeO3）Nano particle：
The bismuth nitrate of 0.005-0.006 mol ferric nitrate and 0.005-0.006 mol is dissolved in 20-30 mL ethylene glycol
In methyl ether, 20-25 is then addedμThe mol/L of L 0.1 salpeter solution, add 0.008-0.01 mol citric acid and 10-
15 mL ethylene glycol, the mixture formed stir 1-2 hours to form colloidal sol at 60-70 DEG C, gained colloidal sol are existed
5-6 hours are heated at 100-120 DEG C to form brown gel, places it on electric furnace and heats 30-40 at 100-120 DEG C
Minute, 2-3 hours are then calcined at 500-600 DEG C in Muffle furnace, after being cooled to room temperature, by the bismuth ferrite of gained
（BiFeO3）Product grinding is standby；
2nd, string suspension is prepared：300-400 g needlebush pulpboards are weighed, 30-40 minutes is soaked with 8-10 L water, tears
The cm of 3 cm × 3 small lodicule is broken into, 10-12 L water is added into trough-style pulp beater stock tank, beater is opened, is slowly added to
State small lodicule to be beaten, reach 40-60 in beating degreeoStop mashing during SR, take out slurry and extract moisture, be placed in hermetic bag
Middle equilibrium water conten, finally measure paper pulp moisture；
3rd, bismuth ferrite is prepared using hydro-thermal method or sol-gel process（BiFeO3）Paper-based composite material：
Take the paper pulp of 2-6 g oven dry stocks to be added in deionized water, its dispersion liquid is obtained after stir process, then to the dispersion liquid
Middle addition 0-6 g bismuth ferrite, stirring obtain well dispersed dispersion liquid, obtained dispersion liquid are used into the quick kayser method of forming
Handsheet is carried out, is dried to obtain bismuth ferrite paper-based composite material.
Methods described prepares bismuth ferrite in hydro-thermal method or sol-gel process（BiFeO3）During nano particle, using Bi (NO3)3
With Fe (NO3)3For raw material.
Pulp suspension in methods described is prepared using mechanical beating method.
Bismuth ferrite paper-based composite material in methods described is prepared using the quick kayser method of forming.
In methods described when preparing composite using the quick kayser method of forming, using PEI as retention agent, use
PAE makes bismuth ferrite be stabilized in the composite as wet strength agent.
Compared with prior art, the positive effect of the present invention is：
1st, the present invention using the interlaced plies of string as carrier, by nanometer bismuth ferrite particle it is dispersed thereon and load,
The reunion of bismuth ferrate nano particle can be avoided, so as to ensure absorption and catalytic activity；
2nd, string used in the present invention belongs to porous material, has superpower absorption property, and strong absorption will necessarily produce
Good catalytic degradation effect；
3rd, string used in the present invention has structure more than micron in itself, and its interlaced plies size is bigger, can be with ferrous acid
Bismuth nano particle forms micro-nano two-dimensional structure, and this structure had both caused the material to have good absorption and catalytic effect, together
When be easy to the recovery of catalysis material again and recycle again；
4th, the use respectively as retention agent and the PEI and PAE of wet strength agent in the present invention, ensure that bismuth ferrite and string
Composite effect, while the material has enough wet strengths again, can be stabilized in water body, and be easy to reuse；
5th, strong absorption and catalytic performance of the present invention using the catalyst, realizes the efficient degradation and mineralising to organic pollution.
Brief description of the drawings
Fig. 1, bismuth ferrite paper-based composite material composition principle figure；
Fig. 2, bismuth ferrite paper-based composite material outside macro morphology figure；
Fig. 3, different ferrous acid bi contents bismuth ferrite paper-based composite material（It is prepared by hydro-thermal method）To Congo red adsorbance variation diagram
（Adsorption conditionses：PH 5, temperature：25 °C）；
Fig. 4, different ferrous acid bi contents bismuth ferrite paper-based composite material（It is prepared by hydro-thermal method）To Congo red degradation kinetics figure
（BiFeO3Mass content：(1) 0, (2) 10%, (3) 20%, (4) 30%, (5) 40%, (6) 50%, pH 5, temperature
Degree：25 °C）；
Fig. 5, different ferrous acid bi contents bismuth ferrite paper-based composite material（It is prepared by sol-gel process）To Congo red absorption quantitative change
Change figure（Adsorption conditionses：PH 5, temperature：25 °C）；
Fig. 6, different ferrous acid bi contents bismuth ferrite paper-based composite material（It is prepared by sol-gel process）To Congo red degraded power
Learn figure（BiFeO3Mass content：(1) 10%, (2) 20%, (3) 30%, (4) 40%, (5) 50%, pH 5, temperature：
25 °C）.
Embodiment
Clear, complete description is further carried out to technical scheme with reference to the accompanying drawings and examples.
The specific implementation process that bismuth ferrite paper-based composite material is prepared using technical solutions according to the invention is divided into nanometer
Bismuth ferrite（BiFeO3）Preparation, string suspension preparation and bismuth ferrite paper-based composite material the main step of preparation three
Suddenly, and according to absorption of the prepared material to organic pollution and degradation effect preparation technology is adjusted accordingly.
Embodiment one：
Bismuth ferrite is prepared using hydro-thermal method（BiFeO3）Paper-based composite material
1st, bismuth ferrite is prepared using hydro-thermal method（BiFeO3）Nano particle
30-50 mL distilled water is measured first to be placed in container, is added 10-15 mL nitric acid (mass fraction 68%) and is diluted；Connect
And weigh 0.005-0.006 mol bismuth nitrates and 0.005-0.006 mol ferric nitrates, stirred in the nitric acid poured into after dilution molten
Solution, is prepared into mixed liquor；Then weigh 33-40 g potassium hydroxide with container to be dissolved in water, it is fixed to be transferred in 50 mL volumetric flasks
Hold；The potassium hydroxide that will have been configured again（KOH）Solution is added in above-mentioned mixed liquor, is stirred continuously the precipitation of generation brown；Connect
And filter solution with conical hopper, obtain tan precipitate, and with distillation water washing 5-8 times；Then precipitation is added to 40-45
ML potassium hydroxide（KOH）Stirred in solution；Obtained suspension is poured into 50 mL stainless steel cauldron, and is put
200 DEG C of reaction 10-12 hours, wait it to naturally cool to room temperature and further take out in Muffle furnace；Obtained solution is filtered,
Bismuth ferrite is can obtain with after distillation water washing 4-6 time, being put into drying 4-6 hours in 70-80 DEG C of baking oven again（BiFeO3）
Nano particle finished product.
2nd, the preparation of string suspension
First, 300-400 g needlebush pulpboards are weighed, soak 30-40 min with 8-10 L water, and be shredded into the cm's of 3 cm × 3
Small lodicule；Then toward addition 10-12 L water in trough-style pulp beater stock tank, beater is opened, above-mentioned slurry is slowly added to and is beaten
Slurry；Reach 40-60 in beating degreeoStop mashing during SR, take out slurry and extract moisture, be placed in equilibrium water conten in hermetic bag, finally
Measure paper pulp moisture.
3rd, bismuth ferrite is prepared using hydro-thermal method（BiFeO3）Paper-based composite material
Take the paper pulp of 2-6 g oven dry stocks to be added in deionized water, its dispersion liquid is obtained after stir process.Then it is scattered to this
0-6 g bismuth ferrite is added in liquid and stirring obtains well dispersed dispersion liquid, then by obtained dispersion liquid using quick triumphant
Fill in the method for forming and carry out handsheet, be dried to obtain bismuth ferrite paper-based composite material (its external morphology is as shown in Figure 2).
4th, bismuth ferrite（Hydro-thermal method）Paper-based composite material is to organic pollution（It is Congo red）Adsorption assessment：
With Congo red for absorption object, research bismuth ferrite paper-based composite material is to its adsorption effect, and according to the effect of absorption,
The preparation technology of bismuth ferrite paper-based composite material is adjusted correspondingly（Specific absorption situation is as shown in Figure 3）.
5th, bismuth ferrite（Hydro-thermal method）Paper-based composite material is to organic pollution（It is Congo red）Degraded evaluation：
With Congo red for degraded object, bismuth ferrite is studied（Hydro-thermal method）Paper-based composite material is to its degradation effect, and according to drop
The effect of solution, to bismuth ferrite（Hydro-thermal method）The preparation technology of paper-based composite material is adjusted correspondingly（Specific degraded situation is such as
Shown in Fig. 4）.
Embodiment two：
Bismuth ferrite is prepared using sol-gel process（BiFeO3）Paper-based composite material
1st, bismuth ferrite is prepared using sol-gel process（BiFeO3）Nano particle
The bismuth nitrate of 0.005-0.006 mol ferric nitrate and 0.005-0.006 mol is dissolved in 20-30 mL second first
In glycol methyl ether, 20-25 is then addedμThe mol/L of L 0.1 salpeter solution, it is subsequently added into 0.008-0.01 mol lemon
Acid and the ethylene glycol with 10-15 mL, the mixture formed stir 1-2 hours to form colloidal sol at 60-70 DEG C.This is molten
Glue heats 5-6 h to form brown gel at 100-120 DEG C, then places it on electric furnace and heats 30- at 100-120 DEG C
40 minutes, and 2-3 hours are calcined at 500-600 DEG C in Muffle furnace, after being cooled to room temperature, products obtained therefrom grinding is standby.
2nd, the preparation of string suspension
First, 300-400 g needlebush pulpboards are weighed, soak 30-40 min with 8-10 L water, and be shredded into the cm's of 3 cm × 3
Small lodicule；Then toward addition 10-12 L water in trough-style pulp beater stock tank, beater is opened, above-mentioned small lodicule is slowly added to and carries out
Mashing；Reach 40-60 in beating degreeoStop mashing during SR, take out slurry and extract moisture, be placed in equilibrium water conten in hermetic bag, most
Paper pulp moisture is measured afterwards.
3rd, bismuth ferrite is prepared using sol-gel process（BiFeO3）Paper-based composite material
Take the paper pulp of 2-6 g oven dry stocks to be added in deionized water, its dispersion liquid is obtained after stir process.Then it is scattered to this
0-6 g bismuth ferrite is added in liquid and stirring obtains well dispersed dispersion liquid, then by obtained dispersion liquid using quick triumphant
Fill in the method for forming and carry out handsheet, be dried to obtain bismuth ferrite paper-based composite material.
4th, bismuth ferrite（Sol-gel process）Paper-based composite material is to organic pollution（It is Congo red）Adsorption assessment：
With Congo red for absorption object, research bismuth ferrite paper-based composite material is to its adsorption effect, and according to the effect of absorption,
The preparation technology of bismuth ferrite paper-based composite material is adjusted correspondingly（Specific absorption situation is as shown in Figure 5）.
5th, bismuth ferrite（Sol-gel process）Paper-based composite material is to organic pollution（It is Congo red）Degraded evaluation：
With Congo red for degraded object, bismuth ferrite is studied（Hydro-thermal method）Paper-based composite material is to its degradation effect, and according to drop
The effect of solution, to bismuth ferrite（Hydro-thermal method）The preparation technology of paper-based composite material is adjusted correspondingly（Specific degraded situation is such as
Shown in Fig. 6）.
Example detection result
1st, use hydro-thermal method prepare bismuth ferrite paper-based composite material when the content of bismuth ferrite is 50% absorption property it is best, its
It is 274.73 mg/g to Congo red adsorbance；Composite catalytic performance when the content of bismuth ferrite is 50% is best, its
It is 84% or so to Congo red degradation rate after adsorption equilibrium（After reaction 15 hours）.
2nd, use sol-gel process prepare bismuth ferrite paper-based composite material when the content of bismuth ferrite is 50% adsorptivity
Can preferably, it is 270.71.73 mg/g to Congo red adsorbance；The composite is catalyzed when the content of bismuth ferrite is 50%
Performance is best, and it is 81% or so to Congo red degradation rate after adsorption equilibrium（After reaction 15 hours）.
All features disclosed in this specification, or disclosed all methods, step and volume, except mutually exclusive spy
Beyond sign and/or step, volume, it can combine in any way.This specification（Including claim, summary）Disclosed in
Any feature, unless specifically stated otherwise, can alternative features equivalent by other or with similar purpose replaced.It is i.e. unless special
Do not describe, each feature is an example in a series of equivalent or similar characteristics.
Described above is only the non-limiting embodiment of invention, substantial amounts of embodiment can also be derived, for this area
Those of ordinary skill for, do not departing from the invention design and on the premise of not making creative work, can also do
Go out the embodiment of several modifications and improvements, these belong to protection scope of the present invention.
Claims (5)
- A kind of 1. preparation method for the paper substrate bismuth ferrite composite for possessing multiphase adsoption catalysis function, it is characterised in that：It is described Method is carried out as follows：（1）, bismuth ferrite prepared using hydro-thermal method or sol-gel process（BiFeO3）Nano particle：A, bismuth ferrite is prepared using hydro-thermal method（BiFeO3）Nano particle：Bismuth ferrite（BiFeO3）The preparation of nano particle：Measure 30-50 mL distilled water to be placed in container, add 10-15 mL mass The salpeter solution of fraction 68% is diluted, and weighs 0.005-0.006 mol bismuth nitrates and 0.005-0.006 mol ferric nitrates, is fallen Enter in the salpeter solution after dilution, stirring and dissolving obtains mixed liquor, weighs 33-40 g potassium hydroxide, is dissolved in water, is transferred to 50 Constant volume in mL volumetric flasks, then the solution for having configured potassium hydroxide is added in above-mentioned mixed liquor, being stirred continuously makes life in solution Into the precipitation of brown, solution is filtered with conical hopper, obtains tan precipitate, and with water washing is distilled 5-8 times, precipitation is added Stirred into 40-45 mL potassium hydroxide solutions, obtained suspension is poured into 50 mL stainless steel cauldron, is placed in 10-12 hours are reacted at 200 DEG C in Muffle furnace, waits it to naturally cool to room temperature taking-up, obtained solution is filtered, then After distillation water washing 4-6 times, it is put into 70-80 DEG C of baking oven and dries 4-6 hours, you can obtain bismuth ferrite（BiFeO3）Receive Rice grain finished product；B, bismuth ferrite is prepared using sol-gel process（BiFeO3）Nano particle：The bismuth nitrate of 0.005-0.006 mol ferric nitrate and 0.005-0.006 mol is dissolved in 20-30 mL ethylene glycol In methyl ether, 20-25 is then addedμThe mol/L of L 0.1 salpeter solution, add 0.008-0.01 mol citric acid and 10- 15 mL ethylene glycol, the mixture formed stir 1-2 hours to form colloidal sol at 60-70 DEG C, gained colloidal sol are existed 5-6 hours are heated at 100-120 DEG C to form brown gel, places it on electric furnace and heats 30-40 at 100-120 DEG C Minute, 2-3 hours are then calcined at 500-600 DEG C in Muffle furnace, after being cooled to room temperature, by the bismuth ferrite of gained （BiFeO3）Product grinding is standby；（2）, prepare string suspension：300-400 g needlebush pulpboards are weighed, soak 30-40 minutes with 8-10 L water, The cm of 3 cm × 3 small lodicule is shredded into, 10-12 L water is added into trough-style pulp beater stock tank, beater is opened, is slowly added to Above-mentioned small lodicule is beaten, and reaches 40-60 in beating degreeoStop mashing during SR, take out slurry and extract moisture, be placed in sealing Equilibrium water conten in bag, finally measure paper pulp moisture；（3）, bismuth ferrite prepared using hydro-thermal method or sol-gel process（BiFeO3）Paper-based composite material：Take the paper pulp of 2-6 g oven dry stocks to be added in deionized water, its dispersion liquid is obtained after stir process, then to the dispersion liquid Middle addition 0-6 g bismuth ferrite, stirring obtain well dispersed dispersion liquid, obtained dispersion liquid are used into the quick kayser method of forming Handsheet is carried out, is dried to obtain bismuth ferrite paper-based composite material.
- 2. the preparation method of the paper substrate bismuth ferrite composite according to claim 1 for possessing multiphase adsoption catalysis function, It is characterized in that：The above method prepares bismuth ferrite in hydro-thermal method or sol-gel process（BiFeO3）During nano particle, using Bi (NO3)3With Fe (NO3)3For raw material.
- 3. the preparation method of the paper substrate bismuth ferrite composite according to claim 1 for possessing multiphase adsoption catalysis function, It is characterized in that：Pulp suspension in methods described is prepared using mechanical beating method.
- 4. the preparation method of the paper substrate bismuth ferrite composite according to claim 1 for possessing multiphase adsoption catalysis function, It is characterized in that：Bismuth ferrite paper-based composite material in methods described is prepared using the quick kayser method of forming.
- 5. the preparation side of the paper substrate bismuth ferrite composite for possessing multiphase adsoption catalysis function according to claim 1 or 4 Method, it is characterised in that：When preparing composite using the quick kayser method of forming in the process, using PEI as retention agent, Using PAE as wet strength agent, bismuth ferrite is set to be stabilized in the composite.
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| CN110451575A (en) * | 2019-09-11 | 2019-11-15 | 哈尔滨工业大学 | A method of bismuth ferrate nano powder magnetic is enhanced based on dimensional effect |
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