CN108530935B - A kind of polyaniline composite functional material, preparation method and application - Google Patents
A kind of polyaniline composite functional material, preparation method and application Download PDFInfo
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- CN108530935B CN108530935B CN201810315187.2A CN201810315187A CN108530935B CN 108530935 B CN108530935 B CN 108530935B CN 201810315187 A CN201810315187 A CN 201810315187A CN 108530935 B CN108530935 B CN 108530935B
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
Abstract
The invention discloses a kind of polyaniline composite functional materials, preparation method and application, belong to field of waste water treatment.The preparation method of the material is the following steps are included: the 1) purification of aniline monomer；2) aniline monomer disperses: in the aniline monomer disperse water after pipetting purification, being stirred at room temperature, obtains aniline monomer dispersion liquid；3) it mixes: weighing resin, ethyl alcohol impregnates, after washing, is placed in the aniline monomer dispersion liquid in step 2), stirring, obtains mixed liquor；4) preparation of oxidant；5) oxidant is added drop-wise in the mixed liquor in step 3), after being added dropwise, stands stirring, product filtering, alcohol wash, are washed to neutral, drying.The composite functional material can not only adsorb the Cr VI in waste water, and further can convert trivalent chromium for hexavalent chrome reduction, realize that the detoxification treatment of chromate waste water and resource utilization utilize；The defect that polyaniline nano powder is not easy to water body application is overcome, large-scale production and application are convenient for.
Description
Technical field
The invention belongs to water pollution process field, it is related to the reduction of Cr VI and Adsorption in water, and in particular to a kind of
Polyaniline composite functional material, preparation method and application.
Background technique
Chromium and compound is widely used in modern industry, and the industry such as ink, dyestuff, plating and chromium legal system leather is not all from
Chromium compound is opened, the meeting chromium different containing quantity in the waste water of these industrial discharges.Chromium is in water with sexavalence (Cr2O7 2-, CrO4 2-
Trivalent (CrO2-,Cr3+) ionic forms exist, mainly exist in the form of sexavalence in industrial wastewater.People is drinking by the water of pollution of chromium
After can cause stomach pain and the diseases such as functions of intestines and stomach disorder even carcinogenic and aberration inducing.In addition chromium is to water body fish, microorganism
And the growth of certain crops also has inhibiting effect, to will affect the utilization of water and the self-purification function of water body.State Ministry of Environmental Protection
Goalkeeper's chromate waste water is classified as a class of pollutant, the direct emission of strict control chromate waste water.Therefore, for the processing of Cr VI one
It is directly the research hotspot in home and abroad environment field.
Currently, mainly including industrially ion-exchange, electrochemical process, reverse osmosis to the treating method of chromyl waste water
It the advantages that saturating the methods of method and absorption method, wherein absorption method is due to easy to operate, safety, simple equipment, is most widely used.On
It states processing method and there is certain limitation, such as removal amount is low, the serious serious problems of secondary pollution.At present for, research compared with
More adsorbents mainly has carbon absorbent and organic polymer etc., but most of adsorbents are still in laboratory research rank
Section, therefore the adsorbent for developing good, convenient for production application the Adsorption for chromium of adsorption effect is that processing is useless containing chromium
One important direction of water.
Polyaniline contains a large amount of amino imino functional group in molecule as a kind of novel conducting polymer,
They have good complexing to metal ion, while these amino iminos also have reproducibility, can be with some oxygen
Change the high metal ion of reduction potential and redox reaction occurs, simultaneously because it is with good solvent resistance, so can
To be widely used in various complex environment conditions.Existing research shows that polyaniline is for Cr VI with relatively high
Adsorption capacity, be preferably except chromium adsorbent, while the imino group functional group on polyaniline can also effectively restore sexavalence
Chromium is the lower trivalent chromium of toxicity.In order to improve polyaniline to the adsorption capacity of chromium, various carriers such as clay, nanofiber, magnetic
The carrier that property nanoparticle etc. is used for polyaniline prepares polyaniline composite material, but this kind of composite material is still with dispersibility
Dispersion, be still detrimental to application of the polyaniline in practical water body.
In the prior art, the preparation method of polyaniline is general are as follows: disperses aniline monomer in an acidic solution, keeps low temperature
It is slowly added to configured oxidant.It is existing poly- in the prior art in order to preferably play the application of polyaniline in the environment
The research of aniline associated materials, such as Chinese Patent Application No. CN201110205090.4, publication date is the Shen of 2012.02.15
Please case disclose a kind of method for removing Cr VI in water removal using polyaniline-modified attapulgite, the method for this application exists first
Under conditions of ice-water bath, aniline and p-phenylenediamine is dissolved in the hydrochloric acid solution that concentration is 1mol/L, adds attapulgite, stir
It mixes uniformly；Then, it dissolves ammonium persulfate into the hydrochloric acid solution that other concentration is 1mol/L；Finally, first two steps are obtained
It after solution mixing carries out polymerization reaction, is stored at room temperature, filters later, wash, it is dry, it is multiple to obtain polyaniline-modified attapulgite
Particle is closed, the water by polyaniline-modified attapulgite clay compounded particle obtained and Cr VI to be removed is 1:800 in mass ratio
~5000 mixing, can effectively remove the Cr VI in the waste water that Cr VI initial concentration is 2.5~35mg/L, and the present invention overcomes
The disadvantage that adsorbent adsorption capacity is small, the rate of adsorption is low and adsorption efficiency is poor existing for existing adsorption method, effectively controls
Cr VI is to pollution and harm caused by water body.However there is also following defects for the method for this application: 1) polyaniline-modified
Attapulgite clay compounded particle be still to be not easy to put into extensive actual use with powder application；2) polyaniline-modified
Attapulgite clay compounded particle need to be improved to the adsorption capacity of Cr VI in water body；3) this application is not studied polyaniline and is changed
Reducing power of the attapulgite clay compounded particle of property to Cr VI.
Chinese Patent Application No. CN201710026980.6, publication date are that the application case of 2017.10.13 discloses one kind
The reduction and removal of the preparation method and applications of novel porous conductive polyaniline material Cr (VI) in waste water, using carefully
The feature of bacterium thallus easy dehydration when having certain shape but drying, is given birth to polyaniline using chemical oxidation method in aqueous solution
It grows behind microorganism surface, it is dry under the conditions of 80 DEG C, so that microorganism dehydration ruptures to form hole, it is prepared porous
Property polyaniline material.The template only discharges water outlet and comes, generation without secondary pollution, is a kind of green template.Use bacterium for template
For the material conductivity than 10S/cm is reached, which is reduced to pH=4.5, can be achieved at the same time to Cr in waste water (VI)
Reduction and reduction after Cr (III) absorption.However there is also following defects for the method for this application: 1) porous, electrically conductive polyphenyl
Amine is still to exist with the dusty material of dispersibility, is unfavorable for the application of practical water body；2) the preparation side of porous, electrically conductive polyaniline
Method difference is using template, and template is microorganism.
Defect based on the prior art, need to invent it is a kind of it is good to Cr VI absorption property, gather conducive to large-scale application
Phenyl composite functional material.
Summary of the invention
1. to solve the problems, such as
In order to overcome polyaniline nano powder to be not easy to water body application and polyaniline related compound material in water body six
The absorption property of valence chromium defect to be improved, the present invention is intended to provide a kind of large specific surface area, being adsorbed to Cr VI in water body
Performance is good, is conducive to large-scale application, while can realize the polyphenyl amino that the detoxification treatment of chromate waste water and resource utilization utilize
Composite functional material.
2. technical solution
To solve the above-mentioned problems, the technical solution adopted in the present invention is as follows:
The present invention provides a kind of polyaniline composite functional material, the polyaniline composite functional material is by aniline list
Body is distributed to generation oxidative polymerization in the surface and inner hole of macroporous absorbent resin and is made.
As further improvement of the present invention, the specific surface area of the polyaniline composite functional material is
652.6m2/ g, average pore size 10.23nm.
As further improvement of the present invention, the preparation method of the polyaniline composite functional material, feature
It is: the following steps are included:
1) purification of aniline monomer: using aniline monomer using dimethicone as oil bath reagent, collection distillates component；
2) aniline monomer disperses: removing step 1) in aniline monomer disperse water that treated, it is stirred at room temperature, obtains aniline list
Dispersion liquid；
3) resin pre-processes: resin is weighed, ethyl alcohol impregnates, after washing, be placed in the aniline monomer dispersion liquid in step 2),
Stirring, obtains mixed liquor；
4) it the preparation of oxidant: weighs oxidant and is dissolved into hydrochloric acid solution；
5) oxidant is added drop-wise in the mixed liquor in step 3), after being added dropwise, stands stirring, product filters, alcohol is washed,
It is washed to neutral, dry.
As further improvement of the present invention, the mass ratio of the resin and aniline monomer is (1~6): 1.
As further improvement of the present invention, the macroporous absorbent resin is XAD-4.
As further improvement of the present invention, the oxidant is ammonium persulfate.
As further improvement of the present invention, mixing time is 6~12h in the step 3), and temperature is room temperature.
As further improvement of the present invention, the present invention provides a kind of methods of Cr VI in removal water body, use
Cr VI in the polyaniline composite functional material Adsorption water body.
As further improvement of the present invention, the concentration of Cr VI is 5~10mg/L, the pH value of water body in the water body
It is 6~8.
As further improvement of the present invention, the method also includes De contamination step, will be inhaled in the step using acid
Attached hexavalent chrome reduction is trivalent chromium.
3. beneficial effect
Compared with the prior art, the invention has the benefit that
(1) polyaniline composite functional material of the invention, using macroporous absorbent resin as carrier, in its inner hole and appearance
Face carries out the oxidation polymerization of aniline, due to the XAD-4 suction-operated excellent to aniline, so that dividing equally inside resin balls with outer surface
Cloth polyaniline, be advantageous to polyaniline in the fixation of resin surfaces externally and internally；It is applied to go in water removal as adsorbent
Chromium, carry out that higher adsorbance has been calculated with the polyaniline of unit mass.Polyaniline adsorbent list prepared by the present invention
For the adsorbance of the polyaniline of position quality up to 130.55mg/g, manufactured polyaniline composite functional material may be directly applied to reality
Border waste water has a good application prospect in water pollution and reparation field.
(2) polyaniline composite functional material of the invention, adsorption specific surface area are up to 652.6m2/ g, average pore size
In 10.23nm, and the specific surface area of the polyaniline powder prepared in the prior art is only 20~50m2/ g, therefore resin and benzene
The polyaniline composite functional material that amine is formed after combining has bigger specific surface area, inherently improves its adsorptivity
Can, it is conducive to promote.
(3) polyaniline composite functional material of the invention has due to adsorbing the substrate effect of resin using to aniline
The macroporous absorbent resin of good adsorbent performance carries out the oxidation polymerization of aniline as carrier, on its surface, is improving polyaniline ratio
While surface area, make it easy to that there is potential application prospect using in terms of the removal for separating Cr VI.It is apparent to improve
Polyaniline powder state, allows to for filling adsorption column, convenient for the application of actual waste water system, effectively overcomes poly-
Aniline is unfavorable for the defect of actual waste water application, has good practical application value.
(4) acid desorption can be used after adsorption saturation with reality in the application of polyaniline composite functional material of the invention
The desorption of existing Cr VI and reduction, the same of the trivalent chromium of formation are adsorbed by polyaniline composite functional material, to form one
The control of body, and the trivalent chromium that Cr VI is desorbed and generates after restoring in the prior art is present in water body, needs further
Removal, complex for operation step, application method of the invention can simplify operating procedure, to realize the detoxification treatment of chromate waste water
And resource utilization utilizes.
(5) polyaniline composite functional material of the invention, in neutral conditions absorption of the unit polyaniline to Cr VI
Reachable 231mg/g is measured, the also commercial weight of unit polyaniline is up to 661mg/g under acid condition.This is mainly due to polyanilines big
Inside the duct of macroporous adsorbent resin, since the adsorption site that nano-space effect is shown increases, adsorption capacity and also
Proper energy power significantly increases.
(6) preparation method of polyaniline composite functional material of the invention, operating procedure is simple, first will be after purification
Aniline monomer is dispersed in water body, then is mixed with resin, so that aniline monomer is preferably distributed and is entrenched in resin inner hole and outer
In turn oxidative polymerization occurs for surface using the effect of oxidant, and PANI@XAD-4 is made, and final material obtained combines
Performance of both polyaniline and resin is excellent to the adsorption rate of Cr VI in water body.
(7) preparation method of polyaniline composite functional material of the invention, choosing has preferably absorption to aniline monomer
The macroreticular resin XAD of effect makes aniline monomer be more advantageous to resin inner hole and outer surface polymerization, further answers polyaniline
It closes functional material and generates superior absorption property.
Specific embodiment
Detailed description of the invention
Fig. 1 is the section microscope contrast schematic diagram of XAD-4 and PANI@XAD-4；
Fig. 2 is the SEM schematic diagram of PANI@XAD-4；
Fig. 3 is the adsorption isotherm schematic diagram of PANI@XAD-4 and PANI when hexavalent chromium concentration is 10~200ppm.
Specific embodiment
The present invention is further described below combined with specific embodiments below.
Embodiment 1
In the present embodiment polyaniline composite functional material preparation method the following steps are included:
1) purification of aniline monomer: aniline monomer is placed in 500mL boiling flask, is packed into rotary evaporator, is utilized two
Methyl-silicone oil is to slowly warm up to 350 DEG C, collection distillates component as oil bath reagent；
2) aniline monomer disperses: the aniline monomer after pipetting purification, which is distributed in 90mL water, to be placed in three-necked flask, room temperature
2h is stirred, aniline dispersion liquid is obtained；
3) resin pre-processes: 5g resin is weighed, is impregnated through ethyl alcohol, after washing, and three mouthfuls of merging dispersion liquid containing aniline monomer
In flask, 6h is stirred at room temperature, obtains mixed liquor, the mass ratio of resin and aniline monomer is 1:1 in the mixed liquor；
4) preparation of oxidant: 12.25g oxidant ammonium persulfate is weighed, is dissolved into 100mL hydrochloric acid solution；
5) 9.5mL concentrated hydrochloric acid is instilled into the three-necked flask in step 3), and slowly oxidant is added drop-wise in three-necked flask,
Cross in title temperature control 5 hereinafter, being added dropwise after, stand stirring 6h, product filters with 200 mesh nonwoven gauzes, washed through alcohol, water
It is washed till neutrality, 50 DEG C of vacuum drying are made the polyaniline composite functional material, are named as PANI@XAD-4.
The content of polyaniline is calculated with the weight gain of resin after preparation, the polyphenyl amine content for obtaining unit compound adsorbent is
5.28%.It is confirmed by micropore specific area adsorption-desorption instrument, the ratio of the polyaniline composite functional material prepared in the present embodiment
Surface area is 652.6m2/ g, average pore size 10.23nm.
Wherein, Fig. 1 is the section microscope contrast schematic diagram of XAD-4 and PANI@XAD-4；Wherein, figure a indicates XAD-4's
Section microscope schematic diagram, figure b indicate the section microscope schematic diagram of ANI@XAD-4.As shown in Figure 1, PANI is in XAD-4
Portion is formed.
Fig. 2 is the SEM schematic diagram of PANI@XAD-4, and as shown in Figure 2, PANI is formed in the outer surface XAD-4.
Therefore, by above-mentioned confirmation map it is found that the PANI@XAD-4 composite material formed make inside XAD-4 resin balls and
Outer surface is dispersed with polyaniline, is advantageous to polyaniline in the fixation of resin surfaces externally and internally；Due to nano-space effect exhibition
The adsorption site revealed increases, therefore its adsorption capacity and reducing power significantly increase.
Using the PANI@XAD-4 in the present embodiment of preparation as adsorbent, the Cr VI that initial concentration is 10mg/L is handled
Simulated wastewater, pH=6.0, steps are as follows for adsorption test:
50mL chromate waste water is added to 100mL according in plug conical flask, is added adsorbent 50mg (PANI@XAD-4), absorption
Equilibration time is 50min, adsorption capacity 141mg/gPANI, eliminating rate of absorption 75%；The removal rate of Cr VI, which refers to, to be inhaled
The concentration of attached Cr VI and the ratio of initial concentration.
, as adsorbent, to handle the sexavalence that initial concentration is 10mg/L using the polyaniline powder prepared in the prior art
Chromium simulated wastewater, pH=6.0, steps are as follows for adsorption test:
50mL chromate waste water is added to 100mL according in plug conical flask, adsorbent 2.5mgPANI is added, break time takes
Sample, time of equilibrium adsorption 50min, adsorption capacity 72mg/gPANI, removal rate 36%；The removal rate of Cr VI refer to by
The concentration of the Cr VI of absorption and the ratio of initial concentration.Wherein, what PANI the and 50mg PANI@XAD-4 of 2.5mg contained is poly-
The amount of aniline is consistent.
Meanwhile to existing literature " a method of using polyaniline-modified attapulgite go water removal in Cr VI " in use
Polyaniline-modified attapulgite clay compounded particle carry out the adsorpting data of Cr VI in water and summarize.
Table 1 is the statistical form for adsorbing comparative test.
Table 1 adsorbs comparative test statistical form
As shown in Table 1, existing literature " a method of using polyaniline-modified attapulgite go water removal in Cr VI " in,
It uses polyaniline-modified attapulgite clay compounded particle to carry out in water in the absorption of Cr VI, adsorption capacity when adsorption equilibrium
Smaller and polyaniline-modified attapulgite clay compounded particle is still with powder application, and be not easy to investment actually makes on a large scale
With；And specific surface of the PANI@XAD-4 material that resin material XAD-4 and PANI are compounded to form due to substantially improving PANI
The performances such as product, aperture, therefore adsorption capacity and eliminating rate of absorption increase significantly.
Embodiment 2
In the present embodiment polyaniline composite functional material preparation method the following steps are included:
1) aniline monomer disperses: the aniline monomer after pipetting purification as described in Example 1, which is distributed in 90mL water, is placed in three
In mouth flask, 2h is stirred at room temperature, obtains aniline dispersion liquid；
2) resin pre-processes: weighing 3g resin, impregnates through ethyl alcohol, after washing, is placed in three containing aniline monomer dispersion liquid
In mouth flask, 10h is stirred at room temperature, obtains mixed liquor, the mass ratio of resin and aniline monomer is 6:1 in the mixed liquor；
3) preparation of oxidant: 7.35g oxidant ammonium persulfate is weighed, is dissolved into 100mL hydrochloric acid solution；
4) 9.5mL concentrated hydrochloric acid is instilled to the three-necked flask in step 3), slowly oxidant is added drop-wise in three-necked flask, mistake
In title temperature control 5 DEG C hereinafter, being added dropwise after, stand stirring 6h, product filters with 200 mesh nonwoven gauzes, washed through alcohol, water
It is washed till neutrality, 50 DEG C of vacuum drying are made the polyaniline composite functional material, are named as PANI@XAD-4.
The content of polyaniline is calculated with the weight gain of resin after preparation, the polyphenyl amine content for obtaining unit compound adsorbent is
4.68%.Using the polyaniline resin of preparation as adsorbent, the Cr VI simulated wastewater that processing initial concentration is 8mg/L, pH=
7.0。
50mL chromate waste water is added to 100mL according in plug conical flask, adsorbent 50mg is added, constant temperature oscillation adsorbs,
Disconnected time sampling, time of equilibrium adsorption 30min, removal rate 50%.The removal rate of Cr VI refers to the Cr VI being adsorbed
Concentration and initial concentration ratio.
Embodiment 3
In the present embodiment polyaniline composite functional material preparation method the following steps are included:
1) aniline monomer disperses: the aniline monomer after pipetting purification as described in Example 1, which is distributed in 90mL water, is placed in three
In mouth flask, 2h is stirred at room temperature, obtains aniline monomer dispersion liquid；
2) resin pre-processes: weighing 3g resin, impregnates through ethyl alcohol, after washing, is placed in three containing aniline monomer dispersion liquid
In mouth flask, 12h is stirred at room temperature, obtains mixed liquor, the mass ratio of resin and aniline monomer is 3:1 in the mixed liquor；
3) configuration of oxidant weighs 7.35g oxidant ammonium persulfate, is dissolved into 100mL hydrochloric acid solution；
4) 9.5mL concentrated hydrochloric acid is instilled to the three-necked flask in step 3), slowly oxidant is added drop-wise in three-necked flask, mistake
In title temperature control 5 DEG C hereinafter, being added dropwise after, stand stirring 6h, product filters with 200 mesh nonwoven gauzes, washed through alcohol, water
It is washed till neutrality, 50 DEG C of vacuum drying are made the polyaniline composite functional material, are named as PANI@XAD-4.
Embodiment 4
The present embodiment is the reality that the adsorption Removal of Cr VI in water body is carried out using polyaniline composite functional material
Apply example.
It is the preparation of polyaniline composite functional material first, specific preparation process and embodiment 1 are consistent.
Using the polyaniline composite functional material of preparation as adsorbent, the Cr VI mould that initial concentration is 10mg/L is handled
Quasi- waste water, pH are adjusted to 1.0 ± 0.2.50mL chromate waste water is added to 100mL according in plug conical flask, adsorbent 50mg is added, it is permanent
Temperature oscillation absorption, break time sampling, time of equilibrium adsorption 20min, Cr VI are reduced to trivalent chromium, and reduction rate is
96.5%, the reduction rate refers to the ratio of measured trivalent chromium concentration Yu initial hexavalent chromium concentration.
Embodiment 5
The present embodiment is the reality that the adsorption Removal of Cr VI in water body is carried out using polyaniline composite functional material
Apply example.
It is the preparation of polyaniline composite functional material first, specific preparation process and embodiment 1 are consistent.
Using the polyaniline composite functional material of preparation as adsorbent, fixed bed volume is 5mL, flow velocity 3BV.h-1,
Cr VI influent concentration is 5mg/L, initial soln pH=8, carries out the column adsorption experiment of Cr VI.
Concentration is used to carry out desorption reduction to it for the hydrochloric acid of 1mol/L after adsorption saturation, desorption flow velocity is 0.125mL/
min.The total adsorbance of integral calculation is 4.38mg, and the Cr VI being reduced in desorption liquid is 4.07mg, and desorption reduction efficiency is
92.9%.
Fig. 3 is the adsorption isotherm of PANI@XAD-4 and PANI when hexavalent chromium concentration is 10~200ppm.In figure, left seat
Mark indicates the adsorbance of Cr VI when balance, and right coordinate is the concentration of the trivalent chromium generated in solution.As shown in Figure 3: 1) PANI@
XAD-4 and PANI distinguishes 231.2mg/g and 58.6mg/g to Cr VI maximum reducing power；2) after PANI@XAD-4 processing
Solution in can't detect trivalent chromium completely, and pass through PANI treated in solution that there are trivalent chromiums.
Therefore, PANI@XAD-4 has stronger reducing power for Cr VI, and not to the trivalent chromium formed after processing
It need to be further processed, the detoxification treatment and resource utilization that can be realized chromate waste water utilize.
Schematically the invention and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the invention one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, in the case where not departing from this creation objective, without creatively designing and the technology
The similar frame mode of scheme and embodiment, should belong to the protection scope of this patent.
Claims (7)
1. a kind of polyaniline composite functional material, it is characterised in that: the polyaniline composite functional material is by aniline monomer
It is distributed to generation oxidative polymerization in the surface and inner hole of macroporous absorbent resin to be made, the quality of the resin and aniline monomer
Than for (1~6): 1, the macroporous absorbent resin is XAD-4, the preparation method of the polyaniline composite functional material,
The following steps are included:
1) purification of aniline monomer: using aniline monomer using dimethicone as oil bath reagent, collection distillates component；
2) aniline monomer disperses: removing step 1) in aniline monomer disperse water that treated, it is stirred at room temperature, obtain aniline monomer point
Dispersion liquid；
3) resin pre-processes: weighing resin, ethyl alcohol impregnates, after washing, in the aniline monomer dispersion liquid being placed in step 2), stirs
It mixes, obtains mixed liquor；
4) it the preparation of oxidant: weighs oxidant and is dissolved into hydrochloric acid solution；
5) oxidant is added drop-wise in the mixed liquor in step 3), after being added dropwise, stands stirring, product filtering, alcohol are washed, washed
To neutral, drying.
2. polyaniline composite functional material according to claim 1, it is characterised in that: the compound function of the polyaniline
The specific surface area of energy material is 652.6m2/ g, average pore size 10.23nm.
3. the preparation method of polyaniline composite functional material according to claim 1, it is characterised in that: the oxidant
For ammonium persulfate.
4. the preparation method of polyaniline composite functional material according to claim 1, it is characterised in that: the step 3)
Middle mixing time is 6~12h, and temperature is room temperature.
5. a kind of method of Cr VI in removal water body, it is characterised in that: use the compound function of polyaniline described in claim 1
Cr VI in energy material Adsorption water body.
6. the method for Cr VI in removal water body according to claim 5, it is characterised in that: Cr VI in the water body
Concentration is 5~10mg/L, and the pH value of water body is 6~8.
7. the method for Cr VI in removal water body according to claim 5, it is characterised in that: the method also includes desorptions
Attached step uses in the step acid by the hexavalent chrome reduction after absorption for trivalent chromium.
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| Title |
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| "聚氨酯海绵负载聚苯胺吸附还原银（I）、汞（II）及铬（VI）离子的研究";张学芬;《中国优秀硕士学位论文全文数据库工程科技I辑》;20160415;B027-484 |
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| CN108530935A (en) | 2018-09-14 |
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