CN103394329B - Carboxyl functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof - Google Patents
Carboxyl functionalized ionic liquid/hydrotalcite-like compound composite material, and preparation method and application thereof Download PDFInfo
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- 239000002608 ionic liquid Substances 0.000 title claims abstract description 97
- 239000002131 composite material Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 title abstract description 8
- 150000001875 compounds Chemical class 0.000 title abstract 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000000975 co-precipitation Methods 0.000 claims abstract description 8
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 4
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 150000003839 salts Chemical class 0.000 claims description 29
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- -1 tetrafluoroborate Chemical compound 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000012266 salt solution Substances 0.000 claims description 12
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims description 6
- OACWYUMBVZPQQN-UHFFFAOYSA-N 3-(3-methyl-2h-imidazol-1-yl)propanoic acid Chemical class CN1CN(CCC(O)=O)C=C1 OACWYUMBVZPQQN-UHFFFAOYSA-N 0.000 claims description 6
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 239000012065 filter cake Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 6
- 238000000967 suction filtration Methods 0.000 claims description 6
- 238000004448 titration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 239000012670 alkaline solution Substances 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 150000001299 aldehydes Chemical class 0.000 claims description 3
- 229940106691 bisphenol a Drugs 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- WBJINCZRORDGAQ-UHFFFAOYSA-N ethyl formate Chemical compound CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- 229910001495 sodium tetrafluoroborate Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 229910003471 inorganic composite material Inorganic materials 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 23
- 150000002500 ions Chemical class 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 150000001450 anions Chemical class 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 125000000129 anionic group Chemical group 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000011147 inorganic material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical group [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229960001545 hydrotalcite Drugs 0.000 description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 229930192474 thiophene Natural products 0.000 description 2
- LDMOEFOXLIZJOW-UHFFFAOYSA-N 1-dodecanesulfonic acid Chemical compound CCCCCCCCCCCCS(O)(=O)=O LDMOEFOXLIZJOW-UHFFFAOYSA-N 0.000 description 1
- VEUMANXWQDHAJV-UHFFFAOYSA-N 2-[2-[(2-hydroxyphenyl)methylideneamino]ethyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCN=CC1=CC=CC=C1O VEUMANXWQDHAJV-UHFFFAOYSA-N 0.000 description 1
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 150000004696 coordination complex Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003333 secondary alcohols Chemical class 0.000 description 1
- 238000002444 silanisation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a carboxyl functionalized ionic liquid/hydrotalcite-like compound composite material, and a preparation method and an application thereof. The preparation method comprises: firstly synthesizing a carboxyl functionalized ionic liquid, then taking carboxyl functionalized ionic liquid, employing a coprecipitation method to load the ionic liquid on the surface of the hydrotalcite-like compound, to prepare the carboxyl functionalized ionic liquid/hydrotalcite-like compound composite material with a lamellar structure. The prepared organic-inorganic composite material has the structure and performance advantages of the functionalized ionic liquid and the hydrotalcite-like compound; the composite material, as an absorbent, shows good adsorption removal capability on pollutions such as bisphenol A, phenol or nonyl phenol in water, and has substantial better adsorptivity performance than the hydrotalcite-like compound; and the synergy advantage of the two materials of the carboxyl functionalized ionic liquid and the hydrotalcite-like compound is given a full play.
Description
Technical field
The present invention relates to a kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material; The invention still further relates to the preparation method of described composite and the application aspect pollutant in removal water body.
Background technology
Houghite (writing a Chinese character in simplified form LDH) is a class two-dimensional nanometer anionic clay, and its composition general formula can be expressed as [M
1-x 2+m
x 3+(OH)
2]
x+(A
n-)
x/nmH
2o, wherein M
2+refer to divalent metal, M
3+refer to trivalent metal cation, x is M
2+with M
3+mol ratio, A
n-
for interlayer can stable existence anion; there is hydrotalcite layered structure; because of its lamella element composition with charge density is adjustable, interlayer guest molecule, crystalline size are controlled; and the advantage such as bio-toxicity is low, present good application prospect at numerous areas such as organic catalysis, polymeric additive, biological medicine, environmental protection.Be worth particularly pointing out, because of part M on laminate
2+by M
3+the superfluous positive charge replacing and produce, can attract interlayer anion object to carry out balance, also can insert other anionic guest molecules by the mode of ion-exchange.Therefore, houghite is having geneogenous advantage [K H Goh, T T Lim, Z Dong. Application of layered double hydroxides for removal of oxyanions:A review. aspect anionic species Adsorption
water Res., 2008,42:1343 ~ 1368].But in actual use, houghite itself is easily reunited, its absorption property is declined, especially for some nonionic guest species, be difficult to enter between houghite laminate, can only adsorb it by intermolecular hydrogen bonding by limited functional group, and nonionic guest molecule and layer ineface compatibility are poor, thereby have greatly limited its practical application aspect pollutant removal.Clearly, the effective way addressing this problem by houghite being carried out to finishing, as adopt surfactant dodecane sulfonate to carry out after finishing houghite, find the Adsorption performance of thiophene apparently higher than houghite [the Q Zhao that does not have to modify, Z Chang, X Lei, X Sun. Adsorption Behavior of Thiophene from Aqueous Solution on Carbonate-and Dodecylsulfate-Intercalated ZnAl Layered Double Hydroxides.
ind. Eng. Chem. Res. 2011,50,10253 ~ 10258.].From existing report, we find, it is different organically-modified by houghite surface is carried out, aspect Adsorption nonionic pollutant, be widely applied, but adopt Carboxyl-functional Ionic Liquid to carry out finishing to houghite, and have not yet to see report for the Adsorption that water body phenols stains thing.
Ionic liquid (Ionic Liquid, IL) refer to and under room temperature or low temperature, present salt liquid, that formed by zwitterion completely, also referred to as low temperature molten salt, have special dissolubility, almost without vapour pressure, have the higher feature such as heat endurance and chemical stability, be a class environmentally friendly " green " solvent of current extensive use.Functionalized ion liquid (Functionalized Ionic Liquid, FIL) refer to by anion or (with) cationic moiety is introduced structure function group, and the class forming has the ionic liquid of specific physics, chemical property." designability " this feature of utilizing ionic liquid, can obtain with the various (NH of functional group
2, COOH, OH, SH, urea silylation, metal complex group etc.) functionalized ion liquid.Functionalized ion liquid after structure function group is introduced, except having the feature of conventional ion liquid, functional groups also provides more reactivity site for it, has widened widely its application.As utilizing silane-functionalized ionic liquid, Sahoo etc. reacts with molecular sieve SBA-15, make novel supported composite catalyst, its catalytic performance is apparently higher than the molecular sieve of supported ion liquid [S Sahoo not, P Kumar, F Lefebvre, S B Halligudi. A chiral Mn (III) salen complex immobilized onto ionic liquid modified mesoporous silica for oxidative kinetic resolution of secondary alcohols.
tetrahedron Lett.,
2008 , 49:4865 ~ 4868].Chinese patent CN102107134 has reported that the active carbon of supported ion liquid has presented the adsorbance higher than former active carbon and adsorption efficiency to volatile organic contaminant, illustrates that ionic liquid brought into play important function.Apparent load has the material of silanization ionic liquid by covalent bonds, use procedure intermediate ion liquid is not easy to run off, and the latter just by suction-operated by ionic liquid loaded at activated carbon surface, ionic liquid in use may run off.But adopt functionalized ion liquid when inorganic material is modified, and functionalization group will, by the load in inorganic material of hydrogen bond form, have stronger adhesion, and functionalized ion liquid is not easy loss.But yet there are no the hydrotalcite-like composite material of load Carboxyl-functional Ionic Liquid and stain the report aspect thing Adsorption at phenols.Here we will adopt coprecipitation to prepare Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, and tentatively examine or check its absorption property to phenolic comp ' ds pollution.
Adopt coprecipitation to prepare Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material and be conducive to the property of abundant binding function ionic liquid and the 26S Proteasome Structure and Function of layered inorganic material, in ionic liquid, the hydroxyl on carboxyl function group and houghite surface forms hydrogen bond, thereby obtain new function material, this is all significant to expanding the application of the functional material based on houghite and preparing new function material.Just at present, adopt coprecipitation to prepare the composite of Carboxyl-functional Ionic Liquid and houghite and the application aspect organic pollution thereof and yet there are no document and relate to, this work is significant in the application of environmental area to further expansion houghite.
Summary of the invention
For the demand of the deficiencies in the prior art and this area research and application, one of object of the present invention is to provide a kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material and preparation method thereof; Adopt coprecipitation that Carboxyl-functional Ionic Liquid is attached to houghite surface, obtain a kind of novel organic-inorganic composite material.
A kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material provided by the invention, is characterized in that described composite is that the ionic liquid that makes by coprecipitation is attached to houghite surface and forms.
In described Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, houghite is the double-metal hydroxide being formed by positively charged laminate and interlayer anion ordered fabrication, metal cation and hydroxyl form the regular octahedron centered by metal cation by covalent bond, adjacent octahedron forms by sharing seamed edge the main body flaggy being parallel to each other, structure is similar to shepardite, and its composition general formula can be expressed as:
[M
1-x 2+M
x 3+(OH)
2]
x+(A
n-)
x/n·mH
2O，
Wherein M
2+refer to divalent metal, M
3+refer to trivalent metal cation, A
n-
for interlayer can stable existence-n valency anion, n is anion valence mumber, x is M in every mole of houghite
3+molal quantity (0.20≤x≤0.33), m is the molal quantity of every mole of houghite interlayer crystallization water;
In described Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, Carboxyl-functional Ionic Liquid is 1-methyl-3-carboxyethyl tetrafluoroborate, and its structural formula is:
Two of the object of the invention is to provide a kind of preparation method of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, specifically comprises the following steps:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Under condition of ice bath, get a certain amount of N-methylimidazole in round-bottomed flask, under equimolar bromoacetic acid is constantly stirred, be slowly added drop-wise to the isopyknic absolute ethyl alcohol of N-methylimidazole in, reactant liquor returns under normal temperature and stirs 4 hours, after filtration, wash product 3 ~ 5 times with absolute ethyl alcohol, obtain intermediate 1-methyl-3-carboxyethyl imidazoles Bromide; Take sodium tetrafluoroborate by equimolar ratio, under constantly stirring, slowly join in the ethanol solution of above-mentioned gained intermediate 1-methyl-3-carboxyethyl imidazoles Bromide, under normal temperature, stir 48 hours, after finishing, reaction removes by filter inorganic salts, filtrate adopts rotary distillation processing, removes in filtrate and remains ethanol, again filters, remove the NaBr generating in exchange, obtain brown viscous liquid 1-methyl-3-carboxyethyl tetrafluoroborate;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
3be made into mixing salt solution by certain mol proportion, the ionic liquid 1-methyl-3-carboxyethyl tetrafluoroborate again step a being made adds in mixing salt solution by certain mol proportion, by above-mentioned mixed solution and alkaline solution titration simultaneously, control pH between 9.0 ~ 11.0, vigorous stirring, at 30 ~ 80 DEG C aging 6 ~ 24 hours.Gained slurries suction filtration, distilled water washing 3 ~ 5 times for filter cake, dry 24h at 60 DEG C, obtains Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
Wherein divalent metal salt Zn (NO described in step (b)
3)
2with trivalent metal salt Al (NO
3)
3mol ratio be 2:1; Ionic liquid 1-methyl-3-carboxyethyl tetrafluoroborate and divalent metal salt Zn (NO
3)
2mol ratio be respectively 0.3:2,0.5:2,0.8:2,1.0:2; Described alkaline solution is NaOH or ammonia spirit.
A kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, this composite is prepared by above-mentioned any one method.
Described Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material has good dispersiveness, and its average grain diameter is greatly between 110 ~ 140 nm, and the polydispersity index of particle diameter is between 0.122 ~ 0.220.
Three of the object of the invention is to provide a kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material in the application of removing pollutant in water body.
Particularly, described composite application aspect phenolic comp ' ds pollution in removal water body.
More specifically, described aldehydes matter is the one in bisphenol-A, phenol or nonyl phenol.
Described application is Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material prepared by the present invention, joins in the water body containing pollutant stirring at room temperature reaction 3 ~ 8 hours.
The instrument that data determination of the present invention adopts is:
Rigaku D/max-rA type X-ray diffractometer and Vertex70 type Fourier infrared spectrograph (German Bruker company) carry out qualitative analysis to sample;
Adopt JEM-2000EX type transmission electron microscope (TEM) that the pattern of sample is risen and characterized;
Adopt particle diameter and the dispersiveness of Zetasizer Nano-ZS90 type nanometer dynamics analyzer to sample to analyze.
The present invention compared with prior art, major advantage is: adopt coprecipitation that Carboxyl-functional Ionic Liquid is carried on to houghite surface, Carboxyl-functional Ionic Liquid and houghite have formed Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material by chemical bonds; Gained composite material concurrent of the present invention has structure and the performance advantage of functionalized ion liquid and houghite, can bring into play the collaborative advantage function of two kinds of functional materials to the Adsorption of phenolic comp ' ds pollution in water body; Particularly, adsorption effect to phenolic comp ' ds pollution in water body and clearance thereof have produced the unexpected technique effect of 1+1 > 2, product of the present invention to the eliminating rate of absorption of phenolic comp ' ds pollution in water body be no matter with houghite or functionalized ion liquid to compared with the eliminating rate of absorption of phenolic comp ' ds pollution in water body, all there is the difference of conspicuousness.
Brief description of the drawings
Fig. 1 is houghite (a), embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (b ~ e) and infrared (IR) spectrogram of Carboxyl-functional Ionic Liquid (f).
Fig. 2 is houghite (a), embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (the XRD diffraction pattern of b ~ e).
Fig. 3 is embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (transmission electron microscope picture of a ~ d).
Detailed description of the invention
For further understanding the present invention, below in conjunction with drawings and Examples, the invention will be further described, but and do not limit the present invention in any way.
embodiment 1:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Under condition of ice bath, get 20 mL N-methylimidazole (10.3 g, 0.25 mol) in round-bottomed flask, by equimolar bromoacetic acid (34.74 g, 0.25 mol) be slowly added drop-wise under constantly stirring with the isopyknic absolute ethyl alcohol of N-methylimidazole (20 mL) in, reactant liquor returns under normal temperature and stirs 4 hours, after filtration, wash product 5 times with absolute ethyl alcohol, obtain intermediate 1-methyl-3-carboxyethyl imidazoles Bromide; Take sodium tetrafluoroborate (27.45 g by equimolar ratio, 0.25 mol), under constantly stirring, slowly join in the ethanol solution of above-mentioned gained intermediate 1-methyl-3-carboxyethyl imidazoles Bromide, under normal temperature, stir 48 hours, after reaction finishes, remove by filter inorganic salts, filtrate adopts rotary distillation processing, remove and in filtrate, remain ethanol, again filter, remove the NaBr generating in exchange, obtain brown viscous liquid 1-methyl-3-carboxyethyl tetrafluoroborate;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
32:1 is made into mixing salt solution in molar ratio, and total concentration of metal ions is 0.6 mol/L, then is 1-methyl-3-carboxyethyl tetrafluoroborate by itself and divalent metal salt Zn (NO by ionic liquid
3)
2mol ratio be that 0.3:2 adds in mixing salt solution, be the sodium hydroxide solution titration simultaneously of 2 mol/L by above-mentioned mixed solution and molar concentration, control pH between 9.0 ~ 10.0, vigorous stirring, at 60 DEG C aging 12 hours.Gained slurries suction filtration, distilled water washing 5 times for filter cake, at 60 DEG C dry 24 hours, obtains Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
embodiment 2:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Adopt method and the condition of step (a) in embodiment 1 synthetic;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
32:1 is made into mixing salt solution in molar ratio, and total concentration of metal ions is 0.6 mol/L, then is 1-methyl-3-carboxyethyl tetrafluoroborate by itself and divalent metal salt Zn (NO by ionic liquid
3)
2mol ratio be that 0.5:2 adds in mixing salt solution, be the sodium hydroxide solution titration simultaneously of 2 mol/L by above-mentioned mixed solution and molar concentration, control pH between 9.0 ~ 10.0, vigorous stirring, at 80 DEG C aging 8 hours.Gained slurries suction filtration, distilled water washing 4 times for filter cake, at 60 DEG C dry 24 hours, obtains Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
embodiment 3:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Adopt method and the condition of step (a) in embodiment 1 synthetic;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
32:1 is made into mixing salt solution in molar ratio, and total concentration of metal ions is 0.6 mol/L, then is 1-methyl-3-carboxyethyl tetrafluoroborate by itself and divalent metal salt Zn (NO by ionic liquid
3)
2mol ratio be that 0.8:2 adds in mixing salt solution, be the ammonia spirit titration simultaneously of 4 mol/L by above-mentioned mixed solution and molar concentration, control pH between 9.0 ~ 10.0, vigorous stirring, at 50 DEG C aging 18 hours.Gained slurries suction filtration, distilled water washing 4 times for filter cake, at 60 DEG C dry 24 hours, obtains Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
embodiment 4:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Adopt method and the condition of step (a) in embodiment 1 synthetic;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
32:1 is made into mixing salt solution in molar ratio, and total concentration of metal ions is 0.6 mol/L, then is 1-methyl-3-carboxyethyl tetrafluoroborate by itself and divalent metal salt Zn (NO by ionic liquid
3)
2mol ratio be that 1.0:2 adds in mixing salt solution, be the ammonia spirit titration simultaneously of 4 mol/L by above-mentioned mixed solution and molar concentration, control pH between 10.0 ~ 11.0, vigorous stirring, at 40 DEG C aging 24 hours.Gained slurries suction filtration, distilled water washing 4 times for filter cake, at 60 DEG C dry 24 hours, obtains Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
Fig. 1 is houghite (a), embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (b ~ e) and infrared (IR) spectrogram of Carboxyl-functional Ionic Liquid (f).In figure in curve a ~ e all at 3443 cm
-1there is the stretching vibration peak of the crystallization water and the stretching vibration peak of surface hydroxyl in left and right, at 452 cm
-1there are the characteristic absorption peak of houghite M – O and O – M – O key, 1384 cm in place
-1the stretching vibration peak of the carbanion that place occurs is the cause not eliminating due to carbon dioxide in preparation process; Except the characteristic absorption band of houghite, and Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (b ~ e) compared to houghite, also at 788 cm
-1there are the absworption peak of imidazole ring, 1090 cm in left and right
-1there is strong B-H vibration absorption peak at left and right place, and Carboxyl-functional Ionic Liquid (f) is at 1760 cm
-1the strong absworption peak of C=O that place occurs, at composite, (in b ~ e), disappearance, goes out Carboxyl-functional Ionic Liquid of the present invention by above result deducibility and loads on houghite material with the form of hydrogen bond, has formed composite.
Fig. 2 is houghite (a), embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (the XRD diffraction pattern of b ~ e).Three sharp-pointed characteristic diffraction peaks of peak type of houghite 003,006 and 009 crystal face in all samples, have all been there are at low 2 θ places.Gained composite presents the higher and sharp-pointed peak shape of intensity, and interpret sample has all kept than more complete LDH structure, and degree of crystallinity is higher.The d of all hybrids
003all be stabilized in 0.76 nm left and right, show due to CO in preparation process
2do not drain, interlayer anion is carbonate, but not nitrate anion, this is consistent with infrared result; Also illustrate that the cationic moiety of ionic liquid does not enter houghite interlayer simultaneously.But along with the increase of the ionic liquid scale of construction, the d of all composites
003diffraction half-peak breadth does not present regular variation, the results are shown in Table 1, and wherein houghite is sample a, and embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material is respectively sample b ~ e.
Table 1: the XRD structural parameters of houghite and Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
| ? | Sample a | Sample b | Sample c | Sample d | Sample e |
| d 003/? | 7.728 | 7.622 | 7.560 | 7.621 | 7.597 |
| d 110/? | 1.506 | 1.507 | 1.536 | 1.507 | 1.507 |
| a/? | 3.012 | 3.014 | 3.072 | 3.014 | 3.014 |
| c/? | 5.556 | 5.244 | 5.012 | 5.242 | 5.194 |
| 003 crystal face diffraction maximum half-peak breadth (°) | 0.503 | 0.379 | 0.517 | 0.401 | 0.503 |
| 110 crystal face diffraction maximum half-peak breadths (°) | 0.320 | 0.290 | 0.347 | 0.315 | 0.358 |
Fig. 3 is embodiment 1 ~ 4 gained Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material (transmission electron microscope picture of a ~ d), obviously can find out, although load has the hydrotalcite-like composite material of ionic liquid to keep the lamellar structure of houghite, but the original hexagonal structure of houghite has suffered destruction, prove that ionic liquid has been combined in houghite surface, and along with the increase of the ionic liquid scale of construction, the average grain diameter of composite is reducing gradually, a, b, c, the average grain diameter of d is respectively 133, 121, 108 and 103 nm, the data obtained is basically identical (is respectively 138 with dynamic light scattering test, 123, 121 and 118 nm), but much smaller than the average grain diameter (235 nm) of houghite, from picture, can also find the increase along with the ionic liquid scale of construction, the nanoparticulate dispersed of composite is raising trend, the polydispersity index of dynamic light scattering test gained particle is respectively 0.220, 0.187, 0.141 and 0.122, all much smaller than the polydispersity index (0.350) of houghite, illustrate that the existence of Carboxyl-functional Ionic Liquid can improve the dispersiveness of nano composite material.
embodiment 5 effect test examples
Subjects: the product that embodiment 1-4 makes, houghite;
Test objective: investigate product and the Adsorption effect of houghite to phenolic comp ' ds pollution in water body that embodiment of the present invention 1-4 makes.
Test grouping:
Test 1 group: the product b that embodiment 1 makes;
Test 2 groups: the product c that embodiment 2 makes;
Test 3 groups: the product d that embodiment 3 makes;
Test 4 groups: the product e that embodiment 4 makes;
Contrast test group: houghite a.
Test method:
By each subjects of the present invention 500 mg join respectively 100 mL, concentration be 0.02 mol/L, respectively contain bisphenol-A, phenol and nonyl phenol pollutant water body in, stirring reaction 5 hours.Every group of test repeats six times, measures it and processes rear concentration, and measure its clearance, averages, and wherein the computing formula of clearance is as follows:
。
Result of the test:
Table 2: product of the present invention and the houghite adsorption Removal result to phenolic comp ' ds pollution in water body
Remarks:
*a compares with contrast test category hydrotalcite, P<0.05,
aMP.AMp.Amp1 group, 2 groups, 4 groups corresponding product b, c, e compare with test, P<0.05.
Brief summary: the result of the test by table 2 can be found out:
On the one hand, in the situation that adding same amount, compared with the Adsorption effect of the each experimental group of the present invention (testing 1,2,3,4 group) with houghite contrast test group to phenolic comp ' ds pollution in water body and clearance, there is significant difference, visible product Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material of the present invention is better than houghite to the Adsorption successful of phenolic comp ' ds pollution in water body, has obtained unexpected technique effect compared with houghite contrast test group.
On the other hand, in each group of the test of product of the present invention, the most outstanding to test 3 groups for the treatment of effects, compared with 4 groups of Adsorption effects and clearance to phenolic comp ' ds pollution in water body of itself and 1 group of test, 2 groups of tests and test, there is significant difference.
Claims (5)
1. Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material, is characterized in that described Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material is with Carboxyl-functional Ionic Liquid, divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
3for raw material, adopt coprecipitation to make, its preparation method comprises following concrete steps:
(a) preparation of Carboxyl-functional Ionic Liquid 1-methyl-3-carboxyethyl tetrafluoroborate
Under condition of ice bath, get a certain amount of N-methylimidazole in round-bottomed flask, under equimolar bromoacetic acid is constantly stirred, be slowly added drop-wise to the isopyknic absolute ethyl alcohol of N-methylimidazole in, reactant liquor returns under normal temperature and stirs 4 hours, after filtration, wash product 3 ~ 5 times with absolute ethyl alcohol, obtain intermediate 1-methyl-3-carboxyethyl imidazoles Bromide; Take sodium tetrafluoroborate by equimolar ratio, under constantly stirring, slowly join in the ethanol solution of above-mentioned gained intermediate 1-methyl-3-carboxyethyl imidazoles Bromide, under normal temperature, stir 48 hours, after finishing, reaction removes by filter inorganic salts, filtrate adopts rotary distillation processing, removes in filtrate and remains ethanol, again filters, remove the NaBr generating in exchange, obtain brown viscous liquid 1-methyl-3-carboxyethyl tetrafluoroborate;
(b) preparation of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material
By divalent metal salt Zn (NO
3)
2with trivalent metal salt Al (NO
3)
3be made into mixing salt solution by certain mol proportion, total concentration of metal ions is 0.6 mol/L, the ionic liquid 1-methyl-3-carboxyethyl tetrafluoroborate again step a being made adds in mixing salt solution by certain mol proportion, by above-mentioned mixed solution and alkaline solution titration simultaneously, control pH between 9.0 ~ 10.0, vigorous stirring, at 30 ~ 80 DEG C aging 6 ~ 24 hours; Gained slurries suction filtration, distilled water washing 3 ~ 5 times for filter cake, at 60 DEG C dry 24 hours, obtains described Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material.
2. a kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material according to claim 1, is characterized in that divalent metal salt Zn (NO described in step (b)
3)
2with trivalent metal salt Al (NO
3)
3mol ratio be 2:1; Ionic liquid 1-methyl-3-carboxyethyl tetrafluoroborate and divalent metal salt Zn (NO
3)
2mol ratio be respectively 0.3:2,0.5:2,0.8:2,1.0:2; Described alkaline solution is NaOH or ammonia spirit.
3. a kind of Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material according to claim 2, is characterized in that its average grain diameter is 110 ~ 140 nm, and the polydispersity index of particle diameter is 0.122 ~ 0.220.
4. Carboxyl-functional Ionic Liquid/the hydrotalcite-like composite material described in claim 1-3 any one, removing an application for pollutant in water body, is characterized in that in described water body, pollutant is aldehydes matter.
5. Carboxyl-functional Ionic Liquid/hydrotalcite-like composite material as claimed in claim 4, removing an application for pollutant in water body, is characterized in that described aldehydes matter is the one in bisphenol-A, phenol or nonyl phenol.
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