CN113713782A - Silver @ polypyrrole composite material for wastewater adsorption and preparation method and application thereof - Google Patents
Silver @ polypyrrole composite material for wastewater adsorption and preparation method and application thereof Download PDFInfo
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- CN113713782A CN113713782A CN202110939755.8A CN202110939755A CN113713782A CN 113713782 A CN113713782 A CN 113713782A CN 202110939755 A CN202110939755 A CN 202110939755A CN 113713782 A CN113713782 A CN 113713782A
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- silver
- composite material
- polypyrrole composite
- polypyrrole
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- 229920000128 polypyrrole Polymers 0.000 title claims abstract description 197
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 182
- 239000002131 composite material Substances 0.000 title claims abstract description 162
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 44
- 239000002351 wastewater Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000002135 nanosheet Substances 0.000 claims abstract description 71
- 239000004332 silver Substances 0.000 claims abstract description 29
- -1 fluorine ions Chemical class 0.000 claims abstract description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 15
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 88
- 239000004094 surface-active agent Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 46
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims description 45
- 239000000178 monomer Substances 0.000 claims description 44
- 238000003756 stirring Methods 0.000 claims description 40
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 30
- 239000000126 substance Substances 0.000 claims description 29
- 238000006479 redox reaction Methods 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 26
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 15
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 14
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 13
- 229940096017 silver fluoride Drugs 0.000 claims description 7
- REYHXKZHIMGNSE-UHFFFAOYSA-M silver monofluoride Chemical compound [F-].[Ag+] REYHXKZHIMGNSE-UHFFFAOYSA-M 0.000 claims description 7
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims description 7
- RBWNDBNSJFCLBZ-UHFFFAOYSA-N 7-methyl-5,6,7,8-tetrahydro-3h-[1]benzothiolo[2,3-d]pyrimidine-4-thione Chemical compound N1=CNC(=S)C2=C1SC1=C2CCC(C)C1 RBWNDBNSJFCLBZ-UHFFFAOYSA-N 0.000 claims description 5
- SDLBJIZEEMKQKY-UHFFFAOYSA-M silver chlorate Chemical compound [Ag+].[O-]Cl(=O)=O SDLBJIZEEMKQKY-UHFFFAOYSA-M 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 abstract description 4
- 229910052731 fluorine Inorganic materials 0.000 abstract description 4
- LGZQSRCLLIPAEE-UHFFFAOYSA-M sodium 1-[(4-sulfonaphthalen-1-yl)diazenyl]naphthalen-2-olate Chemical compound [Na+].C1=CC=C2C(N=NC3=C4C=CC=CC4=CC=C3O)=CC=C(S([O-])(=O)=O)C2=C1 LGZQSRCLLIPAEE-UHFFFAOYSA-M 0.000 abstract description 4
- 239000007800 oxidant agent Substances 0.000 description 17
- 230000001590 oxidative effect Effects 0.000 description 17
- 239000012298 atmosphere Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229910001430 chromium ion Inorganic materials 0.000 description 3
- 239000011258 core-shell material Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 239000002121 nanofiber Substances 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229960000541 cetyl alcohol Drugs 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- DCOPUUMXTXDBNB-UHFFFAOYSA-N diclofenac Chemical compound OC(=O)CC1=CC=CC=C1NC1=C(Cl)C=CC=C1Cl DCOPUUMXTXDBNB-UHFFFAOYSA-N 0.000 description 1
- 229960001259 diclofenac Drugs 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- 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
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—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 surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
- B01J20/28059—Surface area, e.g. B.E.T specific surface area being less than 100 m2/g
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
Abstract
The invention discloses a silver @ polypyrrole composite material for wastewater adsorption, and a preparation method and application thereof, wherein in the silver @ polypyrrole composite material for wastewater adsorption, the mass percentage content of a silver element is 30-88.9%, and polypyrrole is usedThe mass percentage of the component (A) is 10-69%. The silver @ polypyrrole composite material disclosed by the invention is powdery in macroscopic morphology, is a triangular nanosheet with regular specifications in microscopic morphology, and has a specific surface area of 49.59m2/g～57.94m2The density is 2.48g/cm3～3.09g/cm3. The silver @ polypyrrole composite material can be used for efficiently removing fluorine ions and acid red G, Cr in wastewater6+。
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a silver @ polypyrrole composite material for wastewater adsorption, and a preparation method and application thereof.
Background
Polypyrrole, as a typical conductive polymer material, has been widely used in the treatment of environmental pollutants, especially the adsorption treatment of water pollutants, especially the adsorption removal of organic pollutants and inorganic pollutants in water, due to its environmental stability and excellent performance. However, the specific surface area of polyazoles is small (typically at 20 m)2On the order of/g, and even smaller) limits its ability to adsorb contaminants from the water body. In addition, the polypyrrole has a bulk density smaller than that of water, is easy to float on the surface of a water body, and is not beneficial to effective separation of solid and liquid after adsorption with the water body after being soaked by water.
In the prior art, the polypyrrole composite material is compounded with other materials to solve the problems of low specific surface area and difficult solid-liquid separation of polypyrrole. The invention patent (publication No. CN112657474A) discloses a preparation method of a polypyrrole-polyacrylonitrile nanofiber membrane for adsorbing chromium ions, and the polypyrrole-polyacrylonitrile nanofiber membrane is compounded with polyacrylonitrile to improve the specific surface area of polypyrrole and further improve the adsorption capacity of the polypyrrole on chromium ions in a water body. The invention patent (publication number CN111359595A) discloses a preparation method of a polypyrrole core-shell mesoporous silica microsphere adsorption material, which takes monodisperse silica microspheres as a template, uses a surfactant as a pore-making agent, uses the prepared core-shell mesoporous silica microspheres as an inorganic carrier, and polymerizes pyrrole monomers inside and outside and on the surface of a mesoporous pore passage through in-situ polymerization to prepare the polypyrrole core-shell mesoporous silica microsphere adsorption material with large specific surface area, high adsorption capacity and adsorption rate, and is used for efficiently removing Cr (VI) in wastewater. The invention patent (publication number CN110479221A) discloses a preparation method and application of a red mud/polypyrrole composite wastewater adsorbing material. The red mud/polypyrrole composite wastewater adsorbing material is prepared by adopting an in-situ polymerization method and taking ferric trichloride as an oxidant, has good stability, is cheap and efficient, and can synchronously remove phosphorus and a trace amount of organic matter diclofenac in water and wastewater. The invention patent (publication No. CN110229330B) discloses a method for preparing polypyrrole by taking iron ions as a catalyst and hydrogen peroxide as an oxidant in an acidic solution. The invention patent (publication No. CN102350317B) provides a preparation method of a polypyrrole/titanium dioxide composite adsorbent, which needs to adopt an oxidant to oxidize and polymerize polypyrrole on the surface of titanium dioxide, and the specific surface area of the polypyrrole/titanium dioxide composite adsorbent is not obviously improved.
In order to improve the solid-liquid separation performance of polypyrrole, the invention patent (publication number CN108355627A) discloses a polypyrrole modified magnetic kaolin nanocomposite and a preparation method thereof. The polypyrrole modified magnetic kaolin nanocomposite is synthesized by a hydrothermal and in-situ polymerization two-step method, has extremely high removal efficiency on heavy metal ions and organic pollutants in a water body, and can be subjected to solid-liquid separation by using an external magnetic field. Other solutions for improving the separation performance of polypyrrole from water after adsorption are to compound polypyrrole and magnetic materials, for example, patent publications with publication numbers of CN1506399A and CN103933954A are to prepare magnetically separable polypyrrole materials through compounding.
In the above method for solving the problems of small specific surface area of polypyrrole material or difficult solid-liquid separation, usually more than two synthesis steps are required, or auxiliary reagents such as oxidant and catalyst are required to be added, or ultrasound or microwave external field irradiation is required to be added, or raw materials are required to be dissolved in an organic solvent, so that the preparation process is complex and has the defect of high environmental risk.
Disclosure of Invention
The invention aims to solve the technical problem of providing a silver @ polypyrrole composite material for wastewater adsorption and a preparation method and application thereof aiming at the defects of the prior art. The silver @ polypyrrole composite material disclosed by the invention is powdery in macroscopic morphology, is a triangular nanosheet with regular specifications in microscopic morphology, and has a specific surface area of 49.59m2/g～57.94m2The density is 2.48g/cm3～3.09g/cm3. The silver @ polypyrrole composite material can be used for efficiently removing fluorine ions and acid red G, Cr in wastewater6 +。
In order to solve the technical problems, the invention adopts the technical scheme that: the silver @ polypyrrole composite material for wastewater adsorption is characterized in that the mass percentage of silver element in the silver @ polypyrrole composite material is 30% -88.9%, and the mass percentage of polypyrrole is 10% -69%.
The silver @ polypyrrole composite material for wastewater adsorption is characterized in that the silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material for wastewater adsorption is characterized in that the silver @ polypyrrole composite material is nanosheet-shaped, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The silver @ polypyrrole composite material for wastewater adsorption is characterized in that the specific surface area of the silver @ polypyrrole composite material is 49.59m2/g～57.94m2G, density of 2.48g/cm3～3.09g/cm3。
In addition, the invention also provides a method for preparing the silver @ polypyrrole composite material for wastewater adsorption, which is characterized by comprising the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method is characterized by specifically comprising the following steps:
step one, mixing soluble silver salt, a surfactant and water to obtain a system A;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 20-100 ℃ to obtain a system B;
step three, stirring and reacting the system B in the step two for 1 to 48 hours at the temperature of between 20 and 100 ℃;
and step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material.
The method is characterized in that in the system A in the step one, the concentration of silver ions is 0.1-10 mol/L, and the concentration of the surfactant is 0.1-1 mol/L; step one, the soluble silver salt is one or more of silver nitrate, silver fluoride, silver chlorate and silver perchlorate; the surfactant in the first step is one or more of dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and hexadecyl alcohol.
The method is characterized in that in the system B in the second step, the concentration of the pyrrole monomer is 0.1-10 mol/L.
The method is characterized in that in the step one, the soluble silver salt is silver nitrate, and the surfactant is sodium dodecyl benzene sulfonate; the temperature of the second step and the third step is 25 ℃.
Furthermore, the invention also provides a method for treating wastewater by using the silver @ polypyrrole composite material for wastewater adsorption.
Compared with the prior art, the invention has the following advantages:
1. the invention provides a silver @ polypyrrole composite material, which is powdery in macroscopic morphology, triangular nanosheets with regular specifications in microscopic morphology, and 49.59m in specific surface area2/g～57.94m2The density is 2.48g/cm3～3.09g/cm3. The silver @ polypyrrole composite material effectively combines the excellent adsorption performance, high specific surface area and solid-liquid separation characteristic of polypyrrole, and can efficiently remove fluorine ions and acid red G, Cr in wastewater6+。
2. The silver @ polypyrrole composite material disclosed by the invention is easy to precipitate and separate in wastewater treatment and can be recycled.
3. According to the method for preparing the silver @ polypyrrole composite material, water is used as a solvent, under the action of a surfactant, a soluble silver salt and a pyrrole monomer are subjected to an oxidation-reduction reaction to obtain the silver @ polypyrrole composite material, no additional oxidant or catalyst is required to be added, or other auxiliary operations are not required to be performed, the silver @ polypyrrole composite material is synthesized in one step, and the preparation method is simple.
4. The method for preparing the silver @ polypyrrole composite material is environment-friendly in process route and suitable for large-scale industrial popularization and application.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a scanning electron micrograph of the silver @ polypyrrole composite material of example 1.
FIG. 2 is a graph comparing the settling properties of the silver @ polypyrrole composite of example 1 and polypyrrole in water.
Detailed Description
In the following examples, all the chemicals used are commercially available.
Example 1
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver nitrate, and the surfactant is sodium dodecyl benzene sulfonate;
step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 100 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 1h at the temperature of 100 ℃ to perform oxidation-reduction reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The silver @ polypyrrole composite material is subjected to element analysis and test to obtain the mass percentage content of each element, and the result is shown in table 1.
Example 2
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the mass percentage of silver element in the silver @ polypyrrole composite material is 47.3%, and the mass percentage of polypyrrole in the polypyrrole composite material is 52.5%.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 1mol/L, and the concentration of a surfactant is 0.2 mol/L; the soluble silver salt is silver nitrate, and the surfactant is dodecyl trimethyl ammonium chloride;
step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 80 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 1 mol/L;
step three, stirring the system B in the step two for 3 hours at the temperature of 80 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 3
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein in the silver @ polypyrrole composite material, the mass percentage of a silver element is 55.5%, and the mass percentage of polypyrrole is 44.1%.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 3mol/L, and the concentration of a surfactant is 0.4 mol/L; the soluble silver salt is silver nitrate, and the surfactant is sodium dodecyl sulfate;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 60 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 3 mol/L;
step three, stirring the system B in the step two for 9 hours at the temperature of 60 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 4
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein in the silver @ polypyrrole composite material, the mass percentage content of a silver element is 63.2%, and the mass percentage content of polypyrrole is 36%.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 6mol/L, and the concentration of a surfactant is 0.6 mol/L; the soluble silver salt is silver nitrate, and the surfactant is cetyl trimethyl ammonium bromide;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 50 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 6 mol/L;
step three, stirring the system B in the step two for 27 hours at the temperature of 50 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 5
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the mass percentage of a silver element in the silver @ polypyrrole composite material is 77.6%, and the mass percentage of polypyrrole in the polypyrrole composite material is 21.9%.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 8mol/L, and the concentration of a surfactant is 0.8 mol/L; the soluble silver salt is silver nitrate, and the surfactant is cetyl trimethyl ammonium bromide;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 35 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 8 mol/L;
step three, stirring the system B in the step two for 38 hours at the temperature of 35 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 6
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the mass percentage of a silver element in the silver @ polypyrrole composite material is 88.9%, and the mass percentage of polypyrrole in the polypyrrole composite material is 10%.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 10mol/L, and the concentration of a surfactant is 1 mol/L; the soluble silver salt is silver nitrate, and the surfactant is cetyl alcohol;
step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 20 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 10 mol/L;
step three, stirring the system B in the step two for 48 hours at the temperature of 20 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 7
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver nitrate, and the surfactant is sodium dodecyl benzene sulfonate;
step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 25 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 3 hours at the temperature of 25 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 8
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver fluoride, the surfactant is dodecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium bromide, and the mass ratio of the dodecyl trimethyl ammonium chloride to the hexadecyl trimethyl ammonium bromide can be 1: 1.
Step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 50 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 3 hours at the temperature of 50 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 9
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver chlorate, the surfactant is dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide and sodium dodecyl benzene sulfonate, and the mass ratio of the dodecyl trimethyl ammonium chloride to the hexadecyl trimethyl ammonium bromide to the sodium dodecyl benzene sulfonate can be 1:1: 2.
Step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 50 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 5 hours at the temperature of 50 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 10
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver perchlorate, the surfactant is dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate and sodium dodecyl sulfonate, and the mass ratio of the dodecyl trimethyl ammonium chloride to the hexadecyl trimethyl ammonium bromide to the sodium dodecyl benzene sulfonate to the sodium dodecyl sulfonate can be 1:1:1: 2;
step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 25 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 5 hours at the temperature of 25 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 11
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver nitrate and silver fluoride, the mass ratio of the silver nitrate to the silver fluoride can be 3:1, the surfactant is dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and hexadecyl alcohol, and the mass ratio of the dodecyl trimethyl ammonium chloride, the hexadecyl trimethyl ammonium bromide, the sodium dodecyl benzene sulfonate, the sodium dodecyl sulfonate and the hexadecyl alcohol can be 1:1:2:1: 2.
Step two, dripping pyrrole monomers into the system A in the step one under the condition of stirring at 100 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 1h at the temperature of 100 ℃ to perform oxidation-reduction reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Example 12
The embodiment provides a silver @ polypyrrole composite material for wastewater adsorption, wherein the silver element content of the silver @ polypyrrole composite material is 30% by mass, and the polypyrrole content of the silver @ polypyrrole composite material is 69% by mass.
The silver @ polypyrrole composite material is powdery in macroscopic appearance.
The silver @ polypyrrole composite material is in a nanosheet shape, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 mu m, and the thickness of the triangular nanosheet is 450-550 nm.
The embodiment also provides a method for preparing the silver @ polypyrrole composite material, which comprises the step of carrying out redox reaction on a soluble silver salt and a pyrrole monomer by taking water as a solvent under the action of a surfactant to obtain the silver @ polypyrrole composite material.
The method specifically comprises the following steps:
dissolving soluble silver salt and a surfactant in water to obtain a system A; in the system A, the concentration of silver ions is 0.1mol/L, and the concentration of a surfactant is 0.1 mol/L; the soluble silver salt is silver nitrate, silver fluoride, silver chlorate and silver perchlorate, the mass ratio of the silver nitrate to the silver fluoride to the silver chlorate to the silver perchlorate can be 1:2:3:1, the surfactant is dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and hexadecyl alcohol, and the mass ratio of the dodecyl trimethyl ammonium chloride to the hexadecyl trimethyl ammonium bromide to the sodium dodecyl benzene sulfonate to the hexadecyl alcohol can be 1:1:2:1: 2;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 50 ℃ to obtain a system B; in the system B, the concentration of pyrrole monomer is 0.1 mol/L;
step three, stirring the system B in the step two for 10 hours at the temperature of 50 ℃ to carry out redox reaction; in the step, no other oxidant is required to be added for stirring reaction;
step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material; the drying may be for 12 hours at 100 ℃ in an air atmosphere.
The mass percentage content of each element in the silver @ polypyrrole composite material is shown in table 1.
Performance evaluation:
TABLE 1 silver @ polypyrrole composite material, element mass percentages and specific surface areas
As can be seen from Table 1, the specific surface area of the polypyrrole was 20m2The specific surface area of the silver @ polypyrrole composite material is 50m2Above/g, the method has obviously increased specific surface area and relative specific gravity, and shows that the method can effectively improve the performance of polypyrrole.
TABLE 2 silver @ polypyrrole composite vs. fluoride ion, acid Red G, Cr6+Adsorption performance of
The adsorption performance test is carried out according to a sequencing batch adsorption treatment method, wherein the contact time is 120 min. According to the table 2, the silver @ polypyrrole composite material obtained by the invention has very good adsorption characteristics on fluorine ions, organic dye acid red G and hexavalent chromium ions in a water body.
FIG. 1 is a scanning electron microscope image of the silver @ polypyrrole composite material of example 1, and FIG. 2 is a comparative graph of the settling properties of the silver @ polypyrrole composite material and polypyrrole of example 1 in water. As can be seen from fig. 1 and fig. 2, the silver @ polypyrrole composite material with a triangular sheet structure in the micro-morphology can be obtained by the synthesis method of the present invention, and the composite material has good sedimentation performance in a water body.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The silver @ polypyrrole composite material for wastewater adsorption is characterized in that the mass percentage of silver element in the silver @ polypyrrole composite material is 30% -88.9%, and the mass percentage of polypyrrole is 10% -69%.
2. The silver @ polypyrrole composite material for wastewater adsorption according to claim 1, wherein the silver @ polypyrrole composite material has a powdery macro-morphology.
3. The silver @ polypyrrole composite material for wastewater adsorption according to claim 1, wherein the silver @ polypyrrole composite material is nanosheet-shaped, the nanosheet is a triangular nanosheet, the side length of the triangular nanosheet is 1-3 μm, and the thickness of the triangular nanosheet is 450-550 nm.
4. The silver @ polypyrrole composite material for wastewater adsorption according to claim 1, wherein the specific surface area of the silver @ polypyrrole composite material is 49.59m2/g～57.94m2G, density of 2.48g/cm3～3.09g/cm3。
5. A method for preparing the silver @ polypyrrole composite material used for wastewater adsorption in claim 1, which comprises that water is used as a solvent, and a soluble silver salt and a pyrrole monomer are subjected to redox reaction under the action of a surfactant to obtain the silver @ polypyrrole composite material.
6. The method according to claim 5, characterized in that it comprises in particular:
step one, mixing soluble silver salt, a surfactant and water to obtain a system A;
step two, dripping pyrrole monomers into the system A in the step one under the stirring condition of 20-100 ℃ to obtain a system B;
step three, stirring and reacting the system B in the step two for 1 to 48 hours at the temperature of between 20 and 100 ℃;
and step four, filtering the system after the reaction in the step three to obtain an intercepted substance, washing the intercepted substance with deionized water, and drying to obtain the silver @ polypyrrole composite material.
7. The method according to claim 6, wherein in the system A in the step one, the concentration of the silver ions is 0.1-10 mol/L, and the concentration of the surfactant is 0.1-1 mol/L; step one, the soluble silver salt is one or more of silver nitrate, silver fluoride, silver chlorate and silver perchlorate; the surfactant in the first step is one or more of dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, sodium dodecyl benzene sulfonate, sodium dodecyl sulfonate and hexadecyl alcohol.
8. The method according to claim 6, wherein the concentration of pyrrole monomer in the system B in the second step is 0.1mol/L to 10 mol/L.
9. The method of claim 6, wherein in step one the soluble silver salt is silver nitrate and the surfactant is sodium dodecylbenzene sulfonate; the temperature of the second step and the third step is 25 ℃.
10. A method for wastewater treatment by using the silver @ polypyrrole composite material used for wastewater adsorption in claim 1.
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