CN107115850B - The sodium alginate gel ball of graphene oxide-polyaniline compound synthesis removes the adsorptivity of lead in water body and cadmium heavy metal ion - Google Patents
The sodium alginate gel ball of graphene oxide-polyaniline compound synthesis removes the adsorptivity of lead in water body and cadmium heavy metal ion Download PDFInfo
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Abstract
The present invention provides a kind of graphene oxide-polyaniline-sodium alginate gel ball in the method for removal Heavy Metals in Waters lead ion, comprising: graphene oxide-polyaniline-sodium alginate is added in the water body of the ion containing heavy metal lead, oscillation absorption to get.The present invention utilizes Polyaniline Doped graphene modified sodium alginate gel ball, effectively increases sodium alginate gel ball to the adsorption efficiency of heavy metal lead, cadmium.The sodium alginate gel ball finally prepared can satisfy the requirement of quick, efficient removal Heavy Metals in Waters, avoid the substantially diffusion of heavy metal pollution.The preparation method of the gel ball is simple, efficient, especially to heavy metal lead and cadmium adsorption efficiency with higher.
Description
Technical field
The invention belongs to heavy metal adsorption fields, the in particular to alginic acid of graphene oxide-polyaniline compound synthesis
Sodium gel ball removes the adsorptivity of lead in water body and cadmium heavy metal ion.
Background technique
It is heavy metal-polluted to have a finger in every pie the environmental pollution as caused by heavy metal or its compound.Mainly by mining, exhaust gas discharge, sewage
It irrigates and using caused by the human factors such as heavy metals exceeding standard product.Because mankind's activity causes the content of beary metal in environment to increase,
It beyond normal range (NR), is directly detrimental to health, and environmental quality is caused to deteriorate.At the beginning of 4 months 2011, the first " 12th Five-Year Plan " in China
Ad hoc planning --- " planning of heavy metal pollution integrated control " 12th Five-Year Plan " " obtains State Council and formally gives an written reply, and control program makes every effort to control
Make 5 heavy metal species.
Lead contamination is the toxic metals that can be put aside in human body and animal tissue.It is mainly derived from various paint, coating, storage
Battery, smelting, hardware, machinery, plating, cosmetics, hair dye, muffle painting dishes, tableware, fire coal, dilated food, running water pipe
Deng.It is by skin, alimentary canal, respiratory tract enter it is affine with a variety of organs in vivo, major toxicity effect is anemia, nerve
Dysfunction and injury of kidney, vulnerable crowd have children, old man, immunocompromised crowd.Safe concentration of the lead to aquatile
For 0.16mg/L, when with the water water for irrigation rice and wheat of leaded 0.1~4.4mg/L, lead content is obviously increased in crop.In human body
Normal lead content should easily cause anaemia in 0.1 mg/litre, if content is exceeded, damage nervous system.And child is big
Brain is much more sensitive than adult by the damage of lead, once blood lead content is exceeded, it should take positive lead discharging poison measure.Children can
It takes lead discharging oral liquid or carries out lead discharging by other products.
Cadmium is not the essential elements of human body.The toxicity of cadmium is very big, can put aside in human body, and main savings causes in kidney
The changes of function of urinary system；Cadmium main source has the useless of the discharges such as plating, mining, smelting, fuel, battery and chemical industry
Water；Cadmium content is higher in old and useless battery, exists in fruits and vegetables, especially mushroom, also has in dairy produce and cereal
It is a small amount of to exist.Cadmium can replace calcium in bone, soften bone seriously, and bone is broken into pieces, and can cause the dirty functional disturbance of stomach, interfere human body
With the enzyme system of zinc in organism, vascular hypertension is caused to rise.Vulnerable crowd is mining operations person, hypoimmunity people
Group.In water when 0.1mg/L containing cadmium, it can slightly inhibit the self purification of the surface water, cadmium is to the safe concentration of Silver Carp
0.014mg/L, when being irrigated with the water of the 0.04Mg/L containing cadmium, soil and rice are obviously polluted, agriculture pour water in containing cadmium
When 0.007mg/L, it can pollute.Cadmium concentration in normal human blood is less than 5 micrograms per litres, less than 1 micrograms per litre in urine.Cadmium
It can interfere with calcium in bone, if taking in Trace Cadmium for a long time, soften bone seriously, bone is broken into pieces, and is caused Itai-itai diseases, can also be drawn
The dirty functional disturbance of stomach is played, and interferes the enzyme system of zinc in human body and organism, vascular hypertension is caused to rise.Therefore, a prevention and treatment huge sum of money
Belong to pollution, especially lead, cadmium pollution is significant.
Conducting polymer is a kind of new functional macromolecule material, because having excellent physical and chemical performance, in recent years by section
The extensive concern of educational circles.Wherein, polyaniline (PANI) is used as a kind of typical conducting polymer, good electroactive, environment
Stability and reversible doping, are widely used in supercapacitor.Artificial muscle, electromagnetic screen and anti-corrosive paints and
The fields such as chemical sensor.But low conductivity and insoluble insoluble defect again limit further applying for PANI.In order to make up
This is insufficient, and people are usually compound with it by a kind of conductive material, and to improve the electric conductivity of polyaniline, GO is one
The optimal conductive material of kind, it and polyaniline can generate synergistic effect to make up the deficiency of PANI.Meanwhile the incorporation of PANI
Cause GN piece interlamellar spacing to significantly increase, effectively prevent GO agglomeration, and then increases dispersibility of the GO in PANI matrix.
Therefore, concern of the preparation of graphene/polyaniline (GO/PANI) composite material by people in recent years.
In recent years, sodium alginate is often applied to the embedding medium of immobilized cell, but its gel in terms of heavy metal improvement
There are still adsorption time length, the problem of adsorption capacity deficiency for ball, it is difficult to which the emergency for meeting paroxysmal heavy metal pollution accident is fast
Speed disposition requires.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention provides a kind of sodium alginate of graphene oxide-polyaniline compound synthesis
Gel ball, and have studied its adsorptivity removal to lead in water body and cadmium heavy metal ion.The result shows that: the sodium alginate
Gel ball can satisfy the requirement of quick, efficient removal Heavy Metals in Waters, avoid the substantially diffusion of heavy metal pollution.The gel
The preparation method of ball is simple, efficient, especially to heavy metal lead and cadmium adsorption efficiency with higher.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of graphene oxide-polyaniline-sodium alginate gel ball, comprising:
Sodium alginate gel ball；
And it is embedded in polyaniline and graphene in the sodium alginate gel ball.
Now studies have shown that: can be uniformly deposited among graphene sheet layer after Polyaniline Doped graphene, stone is prevented
Accumulation between black alkene nanometer sheet, improves the dispersion degree of graphene oxide, increases its active surface area.The present invention is accidental in an experiment
It was found that above-mentioned Polyaniline Doped graphene is used for modified sodium alginate gel ball, sodium alginate gel ball pair can be effectively improved
The adsorption efficiency of heavy metal lead, cadmium.
Preferably, sodium alginate in the gel ball, polyaniline, graphene mass ratio be 20:5~20:0.3~1.8.
The present invention also provides a kind of graphene oxide-polyaniline-sodium alginate gel ball preparation methods, comprising:
Prepare the graphene oxide of Polyaniline-modified；
The graphene oxide of above-mentioned Polyaniline-modified, sodium alginate are added to the water, are uniformly dispersed, graphene oxide-is obtained
Polyaniline-sodium alginate mixed liquor；
Above-mentioned mixed liquor is instilled into CaCl2In solution, solidify to get sodium alginate-polyaniline-graphite alkene gel ball.
Preferably, the sodium alginate, polyaniline, graphene mass ratio be 20:5~20:0.3~1.8.
Preferably, the mass concentration of sodium alginate is 2% in the graphene oxide-polyaniline-sodium alginate mixed liquor
~5%.
Preferably, the CaCl2The concentration of solution is 1%~2.5%.
Preferably, curing time 8-12h.
The present invention also provides sodium alginate-polyaniline-graphite alkene gel balls of any above-mentioned method preparation.
The present invention also provides any above-mentioned sodium alginate-polyaniline-graphite alkene gel balls to remove Heavy Metals in Waters
In application.
The present invention provides a kind of sodium alginate-polyaniline-graphite alkene gel balls in removal Heavy Metals in Waters lead ion
Method, comprising: sodium alginate-polyaniline-graphite alkene gel ball is added in the water body of the ion containing heavy metal lead, oscillation inhale
It is attached to get.
Preferably, the sodium alginate-polyaniline-graphite alkene gel ball and the mass ratio of heavy metal ion be 1000:7~
12。
Preferably, the concentration of the Heavy Metals in Waters lead ion is 10~50mg/L.
The present invention also provides graphene oxide/polyaniline composite materials to have high adsorption efficiency to heavy metal in preparation
Application in sodium alginate gel ball.
Beneficial effects of the present invention:
(1) present invention utilizes Polyaniline Doped graphene modified sodium alginate gel ball, and it is solidifying can to effectively improve sodium alginate
Adsorption efficiency of the glueballs to heavy metal lead, cadmium.
(2) preparation method of the present invention is simple, adsorption efficiency is high, can satisfy the emergency of paroxysmal heavy metal pollution accident
Processing requirement.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
Embodiment 1:
It takes the aniline of 0.55mL to be dissolved in the dilute HCl of 20mL (1mol/L) and forms uniform solution, GO ultrasound 1h points of 30mg
It is dispersed in above-mentioned aniline solution.Take (the NH of 0.3422g4)2S2O8It is dissolved in the dilute HCl of 10mL 1mol/L, and the solution is fast
Speed is poured into the dispersion solution of above-mentioned ready aniline/GO, is stirred continuously, and polymerization starts quickly, the continuous greening of solution colour,
Holding is stirred overnight at room temperature.After completion of the reaction, the dilution of 75mL ultrapure water is added, obtained product is subjected to centrifugal treating, and
It is washed repeatedly with a large amount of water, ethyl alcohol, until solution is without color, the product that centrifugation obtains then is placed on baking oven
(60 DEG C) dryings to get Polyaniline-modified GO.
GO, 20mg sodium alginate (viscosity 350) and 20mL distilled water of 40mg Polyaniline-modified, ultrasound are added into beaker
6h is uniform to solution, obtains graphene oxide-polyaniline-sodium alginate mixed liquor.Beaker separately is taken, configures the CaCl of 10mg/mL2It is molten
20mL graphene oxide-polyaniline-sodium alginate mixed liquor is instilled CaCl with peristaltic pump by liquid2Solution obtains after solidifying 8-12h
400 graphene oxide-polyanilines-sodium alginate gel ball.
40 above-mentioned different graphene oxide-polyaniline-sodium alginate gel balls are added to 50mL lead ion, cadmium ion
Concentration is all that oscillation absorption 1.5h is carried out on HY-4 speed regulation multi-purpose type oscillator in the water of 10mg/L, with inductive coupling etc. from
Daughter mass spectrograph (ICP) detects Heavy Metals in Waters content, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L
Respectively up to 99%, 80% or more；Lead ion and Cd ionic adsorption effect to 1mg/L all reach 99% or more.
Embodiment 2:
It takes the aniline of 0.55mL to be dissolved in the dilute HCl of 20mL (1mol/L) and forms uniform solution, GO ultrasound 1h points of 30mg
It is dispersed in above-mentioned aniline solution.Take (NH4) of 0.3422g2S2O8It is dissolved in the dilute HCl of 10mL 1mol/L, and the solution is fast
Speed is poured into the dispersion solution of above-mentioned ready aniline/GO, is stirred continuously, and polymerization starts quickly, the continuous greening of solution colour,
Holding is stirred overnight at room temperature.After completion of the reaction, the dilution of 75mL ultrapure water is added, obtained product is subjected to centrifugal treating, and
It is washed repeatedly with a large amount of water, ethyl alcohol, until solution is without color, the product that centrifugation obtains then is placed on baking oven
(60 DEG C) dryings to get Polyaniline-modified GO.
GO, 20mg sodium alginate (viscosity 350) and 20mL distilled water of 80mg Polyaniline-modified, ultrasound are added into beaker
6h is uniform to solution, obtains graphene oxide-polyaniline-sodium alginate mixed liquor.Beaker separately is taken, configures the CaCl of 10mg/mL2It is molten
20mL graphene oxide-polyaniline-sodium alginate mixed liquor is instilled CaCl with peristaltic pump by liquid2Solution obtains after solidifying 8-12h
Graphene oxide-polyaniline-sodium alginate gel ball.
0.25g graphene oxide-polyaniline-sodium alginate gel ball is taken to be added to 50mL lead ion, concentration of cadmium ions all
Oscillation absorption 1.5h to be carried out on HY-4 speed regulation multi-purpose type oscillator, with inductance coupled plasma matter in the water of 10mg/L
Spectrometer (ICP) detects Heavy Metals in Waters content, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L reach respectively
99%, 80% or more.
Embodiment 3:
It takes the aniline of 0.55mL to be dissolved in the dilute HCl of 20mL (1mol/L) and forms uniform solution, GO ultrasound 1h points of 30mg
It is dispersed in above-mentioned aniline solution.Take (the NH of 0.3422g4)2S2O8It is dissolved in the dilute HCl of 10mL 1mol/L, and the solution is fast
Speed is poured into the dispersion solution of above-mentioned ready aniline/GO, is stirred continuously, and polymerization starts quickly, the continuous greening of solution colour,
Holding is stirred overnight at room temperature.After completion of the reaction, the dilution of 75mL ultrapure water is added, obtained product is subjected to centrifugal treating, and
It is washed repeatedly with a large amount of water, ethyl alcohol, until solution is without color, the product that centrifugation obtains then is placed on baking oven
(60 DEG C) dryings to get Polyaniline-modified GO.
GO, 20mg sodium alginate (viscosity 350) and 20mL distilled water of 160mg Polyaniline-modified are added into beaker, surpasses
Sound 6h is uniform to solution, obtains graphene oxide-polyaniline-sodium alginate mixed liquor.Beaker separately is taken, configures the CaCl of 10mg/mL2
20mL graphene oxide-polyaniline-sodium alginate mixed liquor is instilled CaCl with peristaltic pump by solution2Solution, after solidifying 8-12h,
Obtain graphene oxide-polyaniline-sodium alginate gel ball.
0.25g graphene oxide-polyaniline-sodium alginate gel ball is taken to be added to 50mL lead ion, concentration of cadmium ions all
Oscillation absorption 1.5h to be carried out on HY-4 speed regulation multi-purpose type oscillator, with inductance coupled plasma matter in the water of 10mg/L
Spectrometer (ICP) detects Heavy Metals in Waters content, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L reach respectively
99%, 80% or more.
Embodiment 4:
It takes the aniline of 0.55mL to be dissolved in the dilute HCl of 20mL (1mol/L) and forms uniform solution, GO ultrasound 1h points of 30mg
It is dispersed in above-mentioned aniline solution.Take (the NH of 0.3422g4)2S2O8It is dissolved in the dilute HCl of 10mL 1mol/L, and the solution is fast
Speed is poured into the dispersion solution of above-mentioned ready aniline/GO, is stirred continuously, and polymerization starts quickly, the continuous greening of solution colour,
Holding is stirred overnight at room temperature.After completion of the reaction, the dilution of 75mL ultrapure water is added, obtained product is subjected to centrifugal treating, and
It is washed repeatedly with a large amount of water, ethyl alcohol, until solution is without color, the product that centrifugation obtains then is placed on baking oven
(60 DEG C) dryings to get Polyaniline-modified GO.
GO, 35mg sodium alginate (viscosity 350) and 20mL distilled water of 40mg Polyaniline-modified, ultrasound are added into beaker
6h is uniform to solution, obtains graphene oxide-polyaniline-sodium alginate mixed liquor.Beaker separately is taken, configures the CaCl of 10mg/mL2It is molten
20mL graphene oxide-polyaniline-sodium alginate mixed liquor is instilled CaCl with peristaltic pump by liquid2Solution obtains after solidifying 8-12h
Graphene oxide-polyaniline-sodium alginate gel ball.
0.25g graphene oxide-polyaniline-sodium alginate gel ball is taken to be added to 50mL lead ion, concentration of cadmium ions all
Oscillation absorption 1.5h to be carried out on HY-4 speed regulation multi-purpose type oscillator, with inductance coupled plasma matter in the water of 10mg/L
Spectrometer (ICP) detects Heavy Metals in Waters content, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L reach respectively
99%, 80% or more.
Embodiment 5:
It takes the aniline of 0.55mL to be dissolved in the dilute HCl of 20mL (1mol/L) and forms uniform solution, GO ultrasound 1h points of 30mg
It is dispersed in above-mentioned aniline solution.Take (the NH of 0.3422g4)2S2O8It is dissolved in the dilute HCl of 10mL 1mol/L, and the solution is fast
Speed is poured into the dispersion solution of above-mentioned ready aniline/GO, is stirred continuously, and polymerization starts quickly, the continuous greening of solution colour,
Holding is stirred overnight at room temperature.After completion of the reaction, the dilution of 75mL ultrapure water is added, obtained product is subjected to centrifugal treating, and
It is washed repeatedly with a large amount of water, ethyl alcohol, until solution is without color, the product that centrifugation obtains then is placed on baking oven
(60 DEG C) dryings to get Polyaniline-modified GO.
GO, 50mg sodium alginate (viscosity 350) and 20mL distilled water of 40mg Polyaniline-modified, ultrasound are added into beaker
6h is uniform to solution, obtains graphene oxide-polyaniline-sodium alginate mixed liquor.Beaker separately is taken, configures the CaCl of 10mg/mL2It is molten
20mL graphene oxide-polyaniline-sodium alginate mixed liquor is instilled CaCl with peristaltic pump by liquid2Solution obtains after solidifying 8-12h
Graphene oxide-polyaniline-sodium alginate gel ball.
0.25g graphene oxide-polyaniline-sodium alginate gel ball is taken to be added to 50mL lead ion, concentration of cadmium ions all
Oscillation absorption 1.5h to be carried out on HY-4 speed regulation multi-purpose type oscillator, with inductance coupled plasma matter in the water of 10mg/L
Spectrometer (ICP) detects Heavy Metals in Waters content, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L reach respectively
99%, 80% or more.
Comparative example 1
Take 0.25g sodium alginate gel ball to be added to 50mL lead ion, concentration of cadmium ions is all in the water of 10mg/L,
Oscillation absorption 1.5h is carried out on HY-4 speed regulation multi-purpose type oscillator, detects water body with icp ms (ICP)
Middle content of beary metal, the results showed that lead ion and Cd ionic adsorption effect to 10mg/L are 87%, 59% respectively.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (7)
1. a kind of graphene oxide-polyaniline-sodium alginate gel ball preparation method characterized by comprising
Prepare the graphene oxide of Polyaniline-modified；
The graphene oxide of Polyaniline-modified, sodium alginate are added to the water, are uniformly dispersed, graphene oxide-polyaniline-sea is obtained
Mosanom mixed liquor；
The mixed liquor is instilled into CaCl2In solution, solidify to get sodium alginate-polyaniline-graphite alkene gel ball；
The sodium alginate, polyaniline, graphene oxide mass ratio be 20:5~20:0.3~1.8.
2. the method as described in claim 1, which is characterized in that in the graphene oxide-polyaniline-sodium alginate mixed liquor
The mass concentration of sodium alginate is 2%~5%.
3. the method as described in claim 1, which is characterized in that the CaCl2The concentration of solution is 1%~2.5%.
4. the method as described in claim 1, which is characterized in that the curing time is 8-12h.
5. graphene oxide-polyaniline-sodium alginate gel ball of any method preparation of claim 1-4.
6. graphene oxide-polyaniline described in claim 5-sodium alginate gel ball is answered removal Heavy Metals in Waters
With.
7. a kind of graphene oxide-polyaniline-sodium alginate gel ball is in the application of removal Heavy Metals in Waters lead ion, spy
Sign is, comprising: graphene oxide-polyaniline described in claim 5-sodium alginate gel ball is added to containing heavy metal lead
In the water body of ion, oscillation absorption to get.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447672.0A CN107115850B (en) | 2017-06-14 | 2017-06-14 | The sodium alginate gel ball of graphene oxide-polyaniline compound synthesis removes the adsorptivity of lead in water body and cadmium heavy metal ion |
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| CN103446898A (en) * | 2013-09-13 | 2013-12-18 | 天津工业大学 | Alginate-base organic-inorganic composite hydrogel filtering membrane and preparation method thereof |
| CN103613755A (en) * | 2013-10-17 | 2014-03-05 | 河南科技大学 | Graphene/polyaniline nanometer composite material, preparation method and application |
| CN104211977A (en) * | 2014-09-10 | 2014-12-17 | 浙江碳谷上希材料科技有限公司 | Preparation method of graphene-based composite membrane |
| CN105833851A (en) * | 2016-05-18 | 2016-08-10 | 同济大学 | Method for preparing functional group modified alginate-graphene dual-network nano-composite gel beads |
| CN105928996A (en) * | 2016-06-21 | 2016-09-07 | 山东省科学院新材料研究所 | Preparation of graphene oxide and polyaniline-modified electrode and assembled electrochemical detection device |
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| CN103446898A (en) * | 2013-09-13 | 2013-12-18 | 天津工业大学 | Alginate-base organic-inorganic composite hydrogel filtering membrane and preparation method thereof |
| CN103613755A (en) * | 2013-10-17 | 2014-03-05 | 河南科技大学 | Graphene/polyaniline nanometer composite material, preparation method and application |
| CN104211977A (en) * | 2014-09-10 | 2014-12-17 | 浙江碳谷上希材料科技有限公司 | Preparation method of graphene-based composite membrane |
| CN105833851A (en) * | 2016-05-18 | 2016-08-10 | 同济大学 | Method for preparing functional group modified alginate-graphene dual-network nano-composite gel beads |
| CN105928996A (en) * | 2016-06-21 | 2016-09-07 | 山东省科学院新材料研究所 | Preparation of graphene oxide and polyaniline-modified electrode and assembled electrochemical detection device |
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