CN108854955A - Adulterate the aeroge and its preparation method and application of cuprous ion - Google Patents
Adulterate the aeroge and its preparation method and application of cuprous ion Download PDFInfo
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- CN108854955A CN108854955A CN201810646124.5A CN201810646124A CN108854955A CN 108854955 A CN108854955 A CN 108854955A CN 201810646124 A CN201810646124 A CN 201810646124A CN 108854955 A CN108854955 A CN 108854955A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0233—Compounds of Cu, Ag, Au
- B01J20/0237—Compounds of Cu
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28047—Gels
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- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
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- B01D2257/502—Carbon monoxide
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Abstract
The present invention relates to a kind of aeroges and its preparation method and application for adulterating cuprous ion, by the way that aeroge is impregnated in cuprous chloride solution, oscillation is evaporated with liquid, and liquid evaporation is done, repetitive operation is multiple, it finally dries, the aeroge of doping cuprous ion is obtained, to realize the absorption of carbon monoxide.Compared with prior art, after aeroge doping metals of the invention, largely improve absorption of the material to carbon monoxide, there are physical absorptions and chemisorption for whole adsorption process, and sample at normal temperatures and pressures can effectively be desorbed carbon monoxide, be conducive to recycle, be also this great problem of carbon monoxide, provides effectively and efficiently scheme.
Description
Technical field
The invention belongs to gas absorption fields, more particularly, to one kind based on one oxidation of aeroge doping cuprous ion absorption
The method of carbon.
Background technique
Aeroge is a kind of novel nanoporous carbon materials, with high hole ratio (>80%), high specific surface area etc.
Excellent properties.There is good prospect in fields such as electricity, optics, acoustics, catalysis, absorption, since aeroge is with stronger
Adsorption ability, aeroge is also used as a kind of hydrogen storage material that comparison is outstanding.
Carbon monoxide is that the important dirt generated in most wide and most quantity pollutant and combustion process is distributed in atmosphere
Contaminate one of object.When all carbon containing substance combustions is incomplete, carbon monoxide all can produce, therefore carbon monoxide is from a wealth of sources, such as
Home-use coal stove, gas heater, vehicle engine exhaust gas and cigarette are the common source of carbon monoxide.If these are not exclusively
The product of burning can cause intoxicating phenomenon by the respiratory tract of human body, that is, our anthracemias for often saying；An and oxygen
The affinity of carbon monoxide and human body hemoglobin is stronger when changing carbon poisoning, and the carbonyl haemoglobin of formation can be such that hemoglobin loses
The ability and effect of oxygen carrying are gone, to cause the asphyxia of tissue, this is extremely hazardous process.But due to carbon monoxide
Colorless and odorless, it is not easy to be discovered by us, so many not harm to discover can be caused.So effective removal and induction
The method of carbon monoxide causes the extensive concern of people.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of doping cuprous ions
Aeroge and its preparation method and application.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of preparation method for the aeroge adulterating cuprous ion, by the way that aeroge is impregnated in cuprous chloride solution,
Oscillation evaporates with liquid, and liquid evaporation is done, and repetitive operation is multiple, finally dries, and obtains the gas of doping cuprous ion
Gel.
The present invention uses cuprous chloride solution as doping soak, and this mode of operation, which can be convenient, efficiently realizes gas
Cuprous ion doping is quickly and effectively entered aerogel structure, and can be good at being dispersed in airsetting by gel doping metals
Inside glue.
Preferably, the aeroge includes carbon aerogels, polyimide aerogels, aerosil, aluminium oxide
Aeroge or graphite oxide aerogel.
The characteristic of 2 aerogel lamps structure regulation, preferably specific surface area (200m3/ g~2000m3/ g) aeroge.Airsetting
The aperture of glue is preferably micropore, and micropore is more, and physical absorption effect is better.
Preferably, the aeroge is carbon aerogels.
There is the ability to carbon monoxide partial absorption in the functional group on above-mentioned aeroge especially carbon aerogels surface, this and its
His adsorbent (active carbon, MOF, zeolite etc.), which is compared, very big advantage.Aeroge especially carbon aerogels doping metals it
Afterwards, absorption of the material to carbon monoxide is largely improved, there are physical absorptions and chemistry to inhale for whole adsorption process
It is attached.And it can realize at normal temperatures and pressures and carbon monoxide is effectively desorbed, be conducive to recycle, also be carbon monoxide
This great problem provides effectively and efficiently scheme.
Aeroge is by the chemical combination by organic alkoxide, inorganic metal alkoxide, nanoparticle etc. containing high chemical active ingredient
Object uniformly mixes raw material under liquid phase as presoma, and be hydrolyzed, condensation reaction and be made, and formed stable molten
Colloid system.By five steps such as colloidal sol, gel, aging, replacement, drying, the excellent aeroge of structure is prepared.In addition, gas
For the gel ageing time of gel at one week or so, the replacement time was 7~15d, and drying time depends on drying means, supercritical drying
Dry 2~4d is freeze-dried 2~3d, 5~9d of constant pressure and dry.
It is preferred that the aeroge that constant pressure and dry is prepared.After this is also in that constant pressure and dry carbon aerogels are conducive to doping
Influence of the drying to sample itself it is smaller, if it is supercritical drying, sample has contraction largely after doping,
Can have a great impact.
Preferably, the cuprous chloride solution is the hydrochloric acid solution of stannous chloride or the alcoholic solution of stannous chloride.
Wherein the concentration range of hydrochloric acid solution is 2.87mol/L~12.39mol/L, alcoholic solution preferred alcohol solution, body
Fraction range is 4.4%~99.8%.
The present invention will effectively be insoluble in the chlorination of water using the hydrochloric acid solution of stannous chloride or the alcoholic solution of stannous chloride
It is cuprous to be dissolved, and above-mentioned solution will not destroy the performance of aeroge itself.
Preferably, the concentration of the cuprous chloride solution is 0.001~0.15g/mL.In preparation process, preferably control
The volume mass of cuprous chloride solution and aeroge ratio is 100mL:1~10g.
Preferably, the oscillation uses sonic oscillation method, and duration of oscillation is 12~36h, the working frequency of ultrasonic vibration
It is 50~57KHz, power 100%, temperature is 20 DEG C~27 DEG C.
Preferably, the evaporating temperature is 30~90 DEG C, and finally dried temperature is 30~90 DEG C.
Preferably, the repetitive operation is repeatedly repetitive operation 2~5 times.It is most that multi-pass operation is more conducive to stannous chloride
In the hole for entering aeroge more than possible.
If if repetitive operation number is less, the cuprous ion inside aeroge can be seldom, if number is too many, gas
Cuprous ion in gel macropore can run out.So number of repetition be it is controlled, be not it is The more the better, nor it is more few more
It is good.
Using the aeroge for the doping cuprous ion that the above method is prepared, the mass ratio of stannous chloride and aeroge
It is 1:60~1:8.
The application of the aeroge of the doping cuprous ion, is used for the absorption of carbon monoxide.
Aeroge is doped metal adsorption carbon monoxide by the present invention, and this doping method is convenient, fast, while can be had
The doping of effect.In addition, physical absorption being capable of efficient sorbing carbon monoxide in the combination of chemisorption.Due to the structure of aeroge
It is regulatable, so the adsorption capacity of aeroge is also to be adjusted according to demand.
Compared with prior art, the invention has the advantages that：
(1) due to the controlled architecture of aeroge, the aeroge of different structure can be selected according to the demand to absorption；
Realize making the best use of everything truly.Aeroge itself has excellent performance gas absorption, stronger than other materials adsorption capacity；
(2) promote the doping of aeroge using the means of ultrasonic vibration；
(3) present invention is by the way that after doped metal ion, there are physical absorption, (aeroge hole is to gas in adsorption process
The absorption of body) and chemisorption (cuprous ion and reaction of carbon monoxide become cupric) double effects, and after adulterating its
Adsorbance is 1.2~2 times of pure aeroge or so；
(4) aeroge surface has some oxygen-containing functional groups, these functional groups have certain effect to gas absorption tool.
Detailed description of the invention
Fig. 1 is that the carbon monoxide adsorption desorption of the aeroge of active carbon, aeroge and doping cuprous ion of the invention is bent
Line；
Fig. 2 is the SEM figure (b) of SEM figure (a) and pure aeroge that aeroge adulterates after cuprous ion.
Specific embodiment
A kind of preparation method for the aeroge adulterating cuprous ion, by the way that aeroge is impregnated in cuprous chloride solution,
Oscillation evaporates with liquid, and liquid evaporation is done, and repetitive operation is multiple, finally dries, and obtains the gas of doping cuprous ion
Gel.
Preferably, the aeroge includes carbon aerogels, polyimide aerogels, aerosil, aluminium oxide
Aeroge or graphite oxide aerogel.
The characteristic of 2 aerogel lamps structure regulation, preferably specific surface area (200m3/ g~2000m3/ g) aeroge.Airsetting
The aperture of glue is preferably micropore, and micropore is more, and physical absorption effect is better.
Preferably, the aeroge is carbon aerogels.
Preferably, the cuprous chloride solution is the hydrochloric acid solution of stannous chloride or the alcoholic solution of stannous chloride.
Wherein, the concentration range of hydrochloric acid solution is 2.87mol/L~12.39mol/L, and alcoholic solution is ethanol solution, body
Fraction range is 4.4%~99.8%.
Preferably, the concentration of the cuprous chloride solution is 0.001~0.15g/mL.
Preferably, the oscillation uses sonic oscillation method, and duration of oscillation is 12~36h, the working frequency of ultrasonic vibration
It is 50~57KHz, power 100%, temperature is 20 DEG C~27 DEG C.
Preferably, the evaporating temperature is 30~90 DEG C, and finally dried temperature is 30~90 DEG C.
Preferably, the repetitive operation is repeatedly repetitive operation 2~5 times.
Using the aeroge for the doping cuprous ion that the above method is prepared, the mass ratio of stannous chloride and aeroge
It is 1:60~1:8.
The application of the aeroge of above-mentioned doping cuprous ion, is used for the absorption of carbon monoxide.
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：Carbon aerogels infusion process doping metals
It is that raw material prepares RF aeroge by resorcinol (R), formaldehyde (F), sodium carbonate (C), deionized water (H), among it
The molar ratio of benzenediol and formaldehyde is 1:2, the concentration of sodium carbonate is 0.05mol/L.Specific step is as follows：Resorcinol is dissolved
In deionized water, a certain amount of sodium carbonate liquor is slowly added dropwise, stirring a period of time is fully hydrolyzed it, finally into solution
Formalin is added dropwise and stirs 2h, the solution configured is poured into glass container, is placed in baking oven and carries out gel aging, temperature control
System is that replacement liquid is replaced with alcohol, RF wet gel carries out under normal pressure after 30~90 DEG C of are cut wet gel
It is dry, it is finally carbonized in the environment of the protection of inert gas and 1000 DEG C, so that carbon aerogels be prepared.This method is obtained
The carbon aerogels obtained are doped metal, the preparation of soak：Concentrated hydrochloric acid is diluted to be formed concentration be 3.1mol/ hydrochloric acid it is molten
The hydrochloric acid solution configured is dissolved a certain amount of stannous chloride powder and stirred 2 hours by liquid, and forming concentration is 0.3g/mL's
The hydrochloric acid solution (soak) of stannous chloride.The blocky carbon aerogels of 2g are taken to be immersed in soak prepared by 100mL, ultrasound
Sample and soak are put together after concussion 12~36 hours and evaporate dry, repetitive operation 3 at a temperature of 70 DEG C in an oven
It is~5 times, finally that sample is dry at a temperature of 80 DEG C in air.Thus the carbon aerogels of doping metals are prepared.
Fig. 1 is the experimental result that embodiment 1 prepares that sample adsorbs carbon monoxide and is desorbed, three curves in figure,
Respectively commercial active carbon, aeroge (carbon aerogels), composite aerogel (carbon aerogels of doping cuprous ion), can from figure
With, it is evident that the adsorption capacity of aeroge is better than other materials, after doping metals, adsorption capacity is than original aeroge
It enhances nearly more than 1 times.Desorption curve can be seen that the composite material desorption after doping is convenient, i.e., the present invention is to carbon monoxide
Absorption and desorption effect are good.
Fig. 2 is that aeroge adulterates the SEM after cuprous ion and schemes the SEM of (a) and pure aeroge and schemes (b), can be with from figure
Find out, before and after doping, the structure of aeroge is not varied widely, and surface doping will not destroy the structure of aeroge.
Embodiment 2：Carbon aerogels blending method doping metals
It is that raw material prepares RF aeroge by resorcinol (R), formaldehyde (F), sodium carbonate (C), deionized water (H), among it
The molar ratio of benzenediol and formaldehyde is 1:2, the concentration of sodium carbonate is 0.05mol/L.Specific step is as follows：Resorcinol is dissolved
In deionized water, a certain amount of sodium carbonate liquor is slowly added dropwise, stirring a period of time is fully hydrolyzed it, finally into solution
Formalin is added dropwise and stirs 2h, the solution configured is poured into glass container, is placed in baking oven and carries out gel aging, temperature control
System is that replacement liquid is replaced with alcohol after 30~90 DEG C of are cut wet gel, and CO 2 supercritical is dry,
It is finally carbonized in the environment of the protection of inert gas and 1000 DEG C, so that carbon aerogels be prepared.By carbon gas obtained
Gel is doped metal, by carbon-gas gel powder and stannous chloride with 2：5 mass ratio carries out ground and mixed, after grinding
Sample be placed in 400 DEG C of atmosphere of inert nitrogen gas and calcine 4 hours.Preparation obtains the carbon aerogels of doping metals.
Embodiment 3：Aerosil sol-gel method doping metals
Using tetraethyl orthosilicate as silicon source, it is dissolved in being added dropwise quantitative DMF and dense in deionized water after stirring 2 hours
After nitric acid stirs 2 hours, the copper nitrate for being dissolved in dehydrated alcohol is added thereto and continues to stir, colloidal sol is finally poured into vial
Middle gel it is aging for a week to get arrive compound alcogel.It is replaced one week using deionized water, frost is freezed after 2 days
It is dry to obtain compound aerosil.The embodiment doping is less, general to the adsorption effect of carbon monoxide.
Embodiment 4：Aerosil infusion process doping metals
Using TEOS as raw material, second alcohol and water is solvent, and solvent, which is poured slowly into stirring 2h in raw material, is fully hydrolyzed it, salt
Acid and ammonium hydroxide are added in mixed liquor as catalyst with certain molar ratio, and uniform stirring 2h is subsequently poured into closed container
It is placed in gel aging a few days formation alcogel in baking oven (30~60 DEG C).Configure cuprous chloride solution：Concentrated hydrochloric acid is diluted into shape
The hydrochloric acid solution configured is dissolved a certain amount of stannous chloride powder and stirs 2 by the hydrochloric acid solution for being 3.5mol/L at concentration
Hour, form the hydrochloric acid solution (soak) for the stannous chloride that concentration is 0.3g/mL.2g aeroge is taken to be immersed in 100mL made
In standby soak, repetitive operation 3~5 times after ultrasonic vibration 12~36 hours, the alcohol after doping is repeatedly rinsed with alcohol is solidifying
Then glue carries out the aerosil that CO 2 supercritical is dry, and final acquisition is adulterated.
Embodiment 5：Alumina aerogels infusion process doping metals
Under room temperature environment, a certain amount of dehydrated alcohol and nitric acid are poured into culture dish with a certain amount of molar ratio and mixed
2h is stirred, aluminium secondary butylate is gradually poured slowly into mixed liquor and stirring always is up to solution clear, by what is be uniformly mixed
Dehydrated alcohol aqueous solution, which pours into reaction utensil, to be continued to stir to prepare aluminium oxide wet gel, after its aging a couple of days, into
The replacement of row solvent, alcohol supercritical drying is to prepare alumina aerogels.By this method alumina aerogels obtained into
Row doping metals, the preparation of soak：Concentrated hydrochloric acid is diluted to the hydrochloric acid solution to form that concentration is 2.8mol/L, the salt that will be configured
Acid solution dissolves a certain amount of stannous chloride powder and stirs 2 hours, and the hydrochloric acid for forming the stannous chloride that concentration is 0.4g/mL is molten
Liquid (soak).2.5g lump alumina aerogel is taken to be immersed in soak prepared by 100mL, ultrasonic vibration 12~36 is small
When after sample and soak put together evaporated at a temperature of 70 DEG C in an oven dry, repetitive operation 3~5 times, finally will
Sample is dry at a temperature of 80 DEG C in air.Thus the alumina aerogels of doping metals are prepared.
Embodiment 6
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, the concentration of cuprous chloride solution
For 0.001g/mL.
Embodiment 7
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, the concentration of cuprous chloride solution
For 0.15g/mL.
Embodiment 8
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, evaporating temperature is 30 DEG C.
Embodiment 9
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, evaporating temperature is 90 DEG C.
Embodiment 10
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, duration of oscillation 36h, ultrasound
The working frequency of concussion is 50KHz, and power 100%, temperature is 20 DEG C.
Embodiment 11
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, duration of oscillation 12h, ultrasound
The working frequency of concussion is 57KHz, and power 100%, temperature is 27 DEG C.
Embodiment 12
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment preparation process, control protochloride
The volume mass of copper solution and aeroge ratio is 100mL:1g.
Embodiment 13
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment preparation process, control protochloride
The volume mass of copper solution and aeroge ratio is 100mL:10g.
Embodiment 14
The present embodiment is substantially the same manner as Example 1, the difference is that, drying course is impregnated in the present embodiment preparation process
It is repeated 2 times.
Embodiment 15
The present embodiment is substantially the same manner as Example 1, the difference is that, the soak in the present embodiment preparation process uses
Be stannous chloride ethanol solution, the volume fraction range of ethyl alcohol is 4.4% in ethanol solution.
Embodiment 16
The present embodiment is substantially the same manner as Example 1, the difference is that, the soak in the present embodiment preparation process uses
Be stannous chloride ethanol solution, the volume fraction range of ethyl alcohol is 99.8% in ethanol solution.
Embodiment 17
The present embodiment is substantially the same manner as Example 1, the difference is that, the soak in the present embodiment preparation process uses
Be stannous chloride ethanol solution, the volume fraction range of ethyl alcohol is 75% in ethanol solution.
Embodiment 18
The present embodiment is substantially the same manner as Example 1, the difference is that, the soak in the present embodiment preparation process uses
Be stannous chloride hydrochloric acid solution, the concentration of hydrochloric acid solution is 2.87mol/L.
Embodiment 19
The present embodiment is substantially the same manner as Example 1, the difference is that, the soak in the present embodiment preparation process uses
Be stannous chloride hydrochloric acid solution, the concentration of hydrochloric acid solution is 12.39mol/L.
The above-mentioned description to embodiment is for ease of ordinary skill in the art to understand and use the invention.It is ripe
The personnel for knowing art technology obviously easily can make various modifications to these embodiments, and general original described herein
It ought to use in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, this field
Technical staff's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in guarantors of the invention
Within the scope of shield.
Claims (10)
1. a kind of preparation method for the aeroge for adulterating cuprous ion, which is characterized in that by the way that aeroge is impregnated in protochloride
In copper solution, oscillation evaporates with liquid, and liquid evaporation is done, and repetitive operation is multiple, finally dries, and it is sub- to obtain doping
The aeroge of copper ion.
2. the preparation method of the aeroge of doping cuprous ion according to claim 1, which is characterized in that the airsetting
Glue includes carbon aerogels, polyimide aerogels, aerosil, alumina aerogels or graphite oxide aerogel.
3. the preparation method of the aeroge of doping cuprous ion according to claim 2, which is characterized in that the airsetting
Glue is carbon aerogels.
4. the preparation method of the aeroge of doping cuprous ion according to claim 1, which is characterized in that the chlorination
Cuprous solution is the hydrochloric acid solution of stannous chloride or the alcoholic solution of stannous chloride.
5. the preparation method of the aeroge of doping cuprous ion according to claim 4, which is characterized in that the chlorination
The concentration of cuprous solution is 0.001~0.15g/mL.
6. the preparation method of the aeroge of doping cuprous ion according to claim 1, which is characterized in that the oscillation
Using sonic oscillation method, duration of oscillation is 12~36h, and the working frequency of ultrasonic vibration is 50~57KHz, power 100%, temperature
Degree is 20 DEG C~27 DEG C.
7. the preparation method of the aeroge of doping cuprous ion according to claim 1, which is characterized in that the evaporation
Temperature is 30~90 DEG C, and finally dried temperature is 30~90 DEG C.
8. the preparation method of the aeroge of doping cuprous ion according to claim 1, which is characterized in that the repetition
Operation is repeatedly repetitive operation 2~5 times.
9. using the aeroge for the doping cuprous ion that the method as described in claim 1~8 is any is prepared, feature exists
In the mass ratio of stannous chloride and aeroge is 1:60~1:8.
10. the application of the aeroge of doping cuprous ion as claimed in claim 9, which is characterized in that be used for an oxidation
The absorption of carbon.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111345497A (en) * | 2020-04-16 | 2020-06-30 | 江苏大亚滤嘴材料有限公司 | Cuprous ion-based MOFs-gel composite material with CO specific adsorption capacity and application thereof to cigarette filter stick |
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