CN107129734A - The preparation method of composite photocatalyst material - Google Patents
The preparation method of composite photocatalyst material Download PDFInfo
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- CN107129734A CN107129734A CN201710356626.XA CN201710356626A CN107129734A CN 107129734 A CN107129734 A CN 107129734A CN 201710356626 A CN201710356626 A CN 201710356626A CN 107129734 A CN107129734 A CN 107129734A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
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- C08K7/00—Use of ingredients characterised by shape
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- C08K7/24—Expanded, porous or hollow particles inorganic
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- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0893—Zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses the preparation method of composite photocatalyst material, comprise the following steps：1) titanic oxide nano tube thin-film is made；2) load Zn titania nanotubes are made with carrying out hydro-thermal reaction in zinc acetate solution in titanic oxide nano tube thin-film；3) pyrrole monomer, load Zn titania nanotubes are added into n-hexyl alcohol solution, prepares polypyrrole cladding and carry Zn titania nanotubes；4) load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter for coating aqueous silicone acrylic emulsion, polypyrrole are mixed to prepare catalysis material.The preparation method of the present invention, in the strata pyrroles of nano titanium oxide Surface coating one, the photocatalysis efficiency of titanium dioxide can be significantly improved, obtain that a kind of photocatalysis efficiency is high, cost is low, good combination property novel photocatalyst, adulterate zinc ion simultaneously, coating is had the function of organic pollution in the antibiotic and sterilizing and degraded air of efficient pollution-free.
Description
Technical field
The present invention relates to a kind of light catalyzed coating, and in particular to the preparation method of composite photocatalyst material.
Background technology
With the increasingly raising of living standard, purchase automobile, interior decoration and luxurious household turn into people and pursue comfortable raw
A portion living.And contain first in the material such as coating, paint, foam stuffing used in house decoration and luxurious household
The harm gas that the dusty gas such as aldehyde, benzene homologues and vehicle exhaust are excluded causes the air pollution of interior and the air dirt of outdoor
Contaminate, formaldehyde, benzene homologues especially in room air etc. bring great injury to human health.Nano titanium oxide is because of it
Good photocatalytic activity, has obtained significant progress in terms of organic pollutant degradation, sewage disposal, air cleaning,
Photocatalysis oxidation technique is considered as to solve persistent organism pollution problem most to have one of technology of application prospect, in recent years
To be at home and abroad widely studied.But titanium dioxide band gap is 3.2ev, it is only absorbing photon energy more than energy gap
When, the electronics in valence band can just be excited to conduction band, and electronics is formed in conduction band, while corresponding forming a band just in valence band
The hole of electricity, that is, form electron hole pair.Therefore, titanium dioxide can only response wave length be less than 400nm ultraviolet light (account for the sun
Light 4%), and the response to visible ray is very weak, and titanium dioxide because light to excite the electronics of generation and hole to be easy to multiple
Close, photocatalysis efficiency is very low.Photocatalysis condition is harsh and photocatalysis efficiency is low seriously constrains titanium dioxide in photocatalytic degradation
Application in terms of organic matter.
The content of the invention
The technical problems to be solved by the invention be titanium dioxide can only response wave length be less than 400nm ultraviolet light, light urges
Change efficiency it is low, it is few to visible absorption, it is impossible to indoors under natural light effective antibiotic and sterilizing and degrade toxic air contaminant,
Purpose is the preparation method for providing composite photocatalyst material, in the strata pyrroles of nano titanium oxide Surface coating one, Ke Yixian
The photocatalysis efficiency for improving nano titanium oxide is write, and realizes the organo-mineral complexing of titanium dioxide filler, a kind of light is obtained
High catalytic efficiency, cost are low, good combination property novel photocatalyst, while the zinc ion that adulterates, zinc ion has the work(of sterilization
Can, make coating that there is the function of organic pollution in the antibiotic and sterilizing and degraded air of efficient pollution-free.
The present invention is achieved through the following technical solutions：
The preparation method of composite photocatalyst material, comprises the following steps：1) titanium foil is taken, dioxy is made using anodizing
Change titanium nano-tube film, dry；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out the obtained load of hydro-thermal reaction
Zn titania nanotubes；3) it is 0.1~0.2mol/L's pyrrole monomer, load Zn titania nanotubes to be added into concentration
In CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；By ammonium persulfate solution be added drop-wise to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, it is acid with salt acid for adjusting pH, stirs standby；Above two is prepared
Mixed liquor mixing, be stirred vigorously at room temperature reaction 24~32h；Methanol terminating reaction is added, washing is filtered, dried, obtains institute
The polypyrrole cladding needed carries Zn titania nanotubes；4) the load Zn bis- that at room temperature, aqueous silicone acrylic emulsion, polypyrrole are coated
Titanium oxide nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, corrosion inhibiter are well mixed to be made
Composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nano titanium oxide：Silver acetate
Solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=100-110：0.01-
0.08：2.2-2.8：20-25:8-15:0.04-2.0:4-8:1.0-2.4:0.4-1.0:40-45.
The catalysis material preparation method of the present invention, in the strata pyrroles of nano titanium oxide Surface coating one, polypyrrole is led
Electric rate is high, high temperature resistant and good in oxidation resistance, environmental stability are good, electric polypyrrole is combined with titanium dioxide, conjugated polymer
Strong electron supplying capacity can cause the conduction band of titanium dioxide even if that can also be injected into electronics under visible light, to stimulate electronics empty
The formation in cave pair, so as to significantly improve the photocatalysis efficiency of titanium dioxide；In addition, organic poly- in one layer of titanium dioxide surface cladding
Compound, because the steric hindrance of polypyrrole strand is acted on, the dispersiveness of nano titanium oxide can be significantly improved, can be notable
Raising nano titanium oxide photocatalysis efficiency, obtain that a kind of photocatalysis efficiency is high, cost is low, good combination property new light
Catalyst, while the zinc ion that adulterates, zinc ion has the function of sterilization, makes coating have the antibiotic and sterilizing and drop of efficient pollution-free
Solve the function of organic pollution in air.
By step 1) in obtained titanic oxide nano tube thin-film be modified by silane coupler.
The aqueous wetting dispersing agent is H-10, and the aqueous defoamer is SKC aqueous defoamers, and the coalescents are
1,2-PD, the aqueous levelling agent is BYK-300, and the corrosion inhibiter is dimethylethanolamine.
Step 3) described in pyrrole monomer with carry Zn titania nanotubes mass ratio be 0.005~0.04.
The molar concentration of the silver acetate solution is 0.1mol/L.
The present invention compared with prior art, has the following advantages and advantages：
1st, the preparation method of composite photocatalyst material of the present invention, can in the strata pyrroles of nano titanium oxide Surface coating one
To significantly improve the photocatalysis efficiency of nano titanium oxide, and the organo-mineral complexing of titanium dioxide filler is realized, obtain one
Kind of photocatalysis efficiency is high, cost is low, good combination property novel photocatalyst, while the zinc ion that adulterates, zinc ion has sterilization
Function, make coating have efficient pollution-free antibiotic and sterilizing and degraded air in organic pollution function；
2nd, the preparation method of composite photocatalyst material of the present invention, employs environmentally friendly raw material, dope preparing process and uses
Middle non-environmental-pollution, light catalyzed coating cleaning is nontoxic, is more beneficial for health, use is more safe and reliable, and by air
The various property retentions of its own are constant after middle toxic pollutant exhaustive oxidation generation carbon dioxide and water, stable for extended periods of time
Antibiotic and sterilizing and degraded indoor air pollutants function.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, to present invention work
Further to describe in detail, exemplary embodiment and its explanation of the invention is only used for explaining the present invention, is not intended as to this
The restriction of invention.
Embodiment 1
The preparation method of composite photocatalyst material of the present invention, comprises the following steps：1) titanium foil is taken, anodic oxidation legal system is utilized
Titanic oxide nano tube thin-film is obtained, is dried；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal reaction
It is made and carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=100：
0.01：2.2：20:8:0.04:4:1.0-:0.4:40.
Embodiment 2
The preparation method of composite photocatalyst material of the present invention, comprises the following steps：1) titanium foil is taken, anodic oxidation legal system is utilized
Titanic oxide nano tube thin-film is obtained, is dried；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal reaction
It is made and carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=105：
0.05：2.5：23:11:1.0:6:1.7:0.7:42.
Embodiment 3
The preparation method of composite photocatalyst material of the present invention, comprises the following steps：1) titanium foil is taken, anodic oxidation legal system is utilized
Titanic oxide nano tube thin-film is obtained, is dried；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal reaction
It is made and carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=110：
0.08：2.8：25:15:2.0:8:2.4:1.0:45.
Embodiment 4
The preparation method of composite photocatalyst material of the present invention, comprises the following steps：1) titanium foil is taken, anodic oxidation legal system is utilized
Titanic oxide nano tube thin-film is obtained, is dried；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal reaction
It is made and carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=100：
0.001：2.2：10:8:0.04:4:1.0:0.4:30.
Embodiment 5
The preparation method of composite photocatalyst material of the present invention, comprises the following steps：1) titanium foil is taken, anodic oxidation legal system is utilized
Titanic oxide nano tube thin-film is obtained, is dried；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal reaction
It is made and carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=110：
1.0：3.0：35:15:2.0:8:2.4:1.0:50.
Embodiment 6
The difference of the present embodiment and embodiment 1 is not include polypyrrole and silver acetate solution.
It is preferred that, by step 1) in obtained titanic oxide nano tube thin-film be modified by silane coupler.
It is preferred that, the aqueous wetting dispersing agent be H-10, the aqueous defoamer be SKC aqueous defoamers, it is described into
Film auxiliary agent is 1,2-PD, and the aqueous levelling agent is BYK-300, and the corrosion inhibiter is dimethylethanolamine.
It is preferred that, step 3) described in pyrrole monomer with carry Zn titania nanotubes mass ratio be 0.005~0.04.
It is preferred that, the molar concentration of the silver acetate solution is 0.1mol/L.
Photocatalytic degradation of the material to the sterilizing rate and PARA FORMALDEHYDE PRILLS(91,95), toluene, phenol of Escherichia coli is not made in be the same as Example to table 1
Rate
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Formaldehyde | 91.3% | 90.6% | 90.8% | 88.5% | 87.6% | 78.8% |
| Toluene | 86.7% | 87.2% | 86.3% | 83.6% | 84.1% | 73.5% |
| Phenol | 92.5% | 93.2% | 93.7% | 86.5% | 86.9% | 76.3% |
| Escherichia coli | 61.5% | 63.8% | 62.3% | 54.6% | 52.9% | 44.8% |
Experimental test result shows, all coating of embodiment 1~3 to Escherichia coli photo-catalyst rate 60% with
On；PARA FORMALDEHYDE PRILLS(91,95), toluene, phenol photocatalytic degradation efficiency in the range of 85~95%.In addition, repeating experiment it has also been found that it is killed
Bacterium rate and degradation rate substantially do not change, illustrate that light catalyzed coating photocatalysis performance is stable；Embodiment 4~5 is this hair
Outside the span of bright formula, photocatalytic activity is lower slightly, and sterilizing rate declines, and embodiment 6 does not contain polypyrrole and acetic acid
Silver-colored solution, indoor formaldehyde, toluene, phenol photocatalytic degradation efficiency under 80%.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (5)
1. the preparation method of composite photocatalyst material, it is characterised in that comprise the following steps：1) titanium foil is taken, anodic oxidation is utilized
Legal system obtains titanic oxide nano tube thin-film, dries；2) titanic oxide nano tube thin-film, which is added in zinc acetate solution, carries out hydro-thermal
Reaction, which is made, carries Zn titania nanotubes；3) by pyrrole monomer, carry Zn titania nanotubes be added to concentration for 0.1~
In 0.2mol/L CTAB n-hexyl alcohol solution, stir to solution clear, it is standby；Ammonium persulfate solution is added drop-wise to concentration
In n-hexyl alcohol solution for 0.1~0.2mol/L CTAB, it is acid with salt acid for adjusting pH, stirs standby；By above-mentioned two
The mixed liquor mixing prepared is planted, 24~32h of reaction at room temperature is stirred vigorously；Methanol terminating reaction is added, washing is filtered, done
Dry, the polypyrrole cladding needed for obtaining carries Zn titania nanotubes；4) at room temperature, by aqueous silicone acrylic emulsion, polypyrrole bag
Load Zn titania nanotubes, aqueous wetting dispersing agent, aqueous defoamer, coalescents, aqueous levelling agent, the corrosion inhibiter covered is mixed
Close uniformly obtained composite photocatalyst material；The quality parts ratio of the raw material is aqueous silicone acrylic emulsion：Polypyrrole：Nanometer titanium dioxide
Titanium：Silver acetate solution：Aqueous wetting dispersing agent：Aqueous defoamer：Coalescents：Aqueous levelling agent：Corrosion inhibiter：Water=100-
110：0.01-0.08：2.2-2.8：20-25:8-15:0.04-2.0:4-8:1.0-2.4:0.4-1.0:40-45.
2. the preparation method of composite photocatalyst material according to claim 1, it is characterised in that by step 1) in it is obtained
Titanic oxide nano tube thin-film is modified by silane coupler.
3. the preparation method of composite photocatalyst material according to claim 1, it is characterised in that the aqueous wetting and dispersing
Agent is H-10, and the aqueous defoamer is SKC aqueous defoamers, and the coalescents are 1,2-PD, the aqueous levelling
Agent is BYK-300, and the corrosion inhibiter is dimethylethanolamine.
4. the preparation method of composite photocatalyst material according to claim 1, it is characterised in that step 3) described in pyrroles
Monomer is 0.005~0.04 with the mass ratio for carrying Zn titania nanotubes.
5. the preparation method of composite photocatalyst material according to claim 1, it is characterised in that the silver acetate solution
Molar concentration is 0.1mol/L.
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