CN114455664B - Visible light enhanced sterilization and decoloration dual-functional water treatment agent - Google Patents
Visible light enhanced sterilization and decoloration dual-functional water treatment agent Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 19
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 16
- 239000000084 colloidal system Substances 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 241000894006 Bacteria Species 0.000 claims abstract description 3
- 239000000470 constituent Substances 0.000 claims abstract description 3
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 3
- 239000011941 photocatalyst Substances 0.000 claims abstract description 3
- 231100000719 pollutant Toxicity 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 30
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 29
- 238000001354 calcination Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 14
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004202 carbamide Substances 0.000 claims description 7
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004042 decolorization Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052709 silver Inorganic materials 0.000 abstract description 3
- 239000004408 titanium dioxide Substances 0.000 abstract description 3
- 229910000484 niobium oxide Inorganic materials 0.000 abstract 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 2
- 229910001923 silver oxide Inorganic materials 0.000 abstract 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- BJAARRARQJZURR-UHFFFAOYSA-N trimethylazanium;hydroxide Chemical compound O.CN(C)C BJAARRARQJZURR-UHFFFAOYSA-N 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000001338 self-assembly Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention provides a visible light enhanced sterilization and decoloration dual-function water treatment and a preparation method thereof, namely silver/titanium dioxide is self-assembled with nitrogen-doped niobium oxide colloid in a nano sol form to form a novel sterilization and decoloration dual-function lamellar water treatment agent. When no visible light is irradiated, the silver is used as a general water treatment agent, and silver is sterilized, and the niobium oxide laminate is accumulated and adsorbed for decoloration; as a photocatalyst under visible light, the silver/titanium dioxide and the nitrogen-doped niobium oxide laminate serving as constituent units can excite hydroxyl free radicals (OH) to oxidize and mineralize bacteria and colored pollutants in water, so that the sterilizing and decoloring capacities of the water treatment agent are enhanced, and the water treatment agent is suitable for being used in all-weather environments.
Description
Technical Field
The invention relates to a novel water treatment agent and a preparation method thereof, in particular to an illumination enhanced sterilization and decoloration dual-function water treatment agent.
Background
A large amount of colored and bacteria-free wastewater generated in the production process of the industries of paper making, textile, chemical industry, medicine and the like. In recent years, as environmental policies are tightened, the above-mentioned industry water treatment becomes a research hotspot. Ag. Cu, zn and the like are widely used as classical bactericides. Generally, it is critical to improve the sterilization efficiency to disperse the sterilization ions such as Ag, cu, zn on molecular sieves, alumina, titanium dioxide, activated carbon, etc., and then form a composite structure with other carriers.
The layered material is a three-dimensional structure material composed of 2D laminates, has the advantages of being capable of designing the 2D laminates, adjusting interlayer distance, controlling layer-by-layer stacking and the like, and can form new acid sites, stacking holes and larger specific surface area after being self-assembled, which are beneficial to adsorption and catalytic reaction. Therefore, in recent years, application in the fields of materials, environmental protection and the like has been paid attention to. The traditional Nb-containing layered material has absorption in the ultraviolet region and weaker absorption in the visible region, and the absorption of the material to light can be expanded to the visible region by forming vacancies through nonmetal and metal doping.
In view of this, the present invention is directed toThrough a double-colloid self-assembly process, a 2D laminate material and Ag/TiO which are all absorbed in a visible light region are constructed 2 Composite material of material, which is prepared by loading Ag serving as traditional bactericide on TiO in a highly dispersed way 2 So as to realize different paths of treatment of colored and bacterial sewage under the conventional and illumination conditions.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the visible light enhanced sterilization and decoloration dual-function Ag/TiO 2 -N/Nb 2.89 O 10.89 A water treatment agent and a preparation method thereof.
Ag/TiO 2 -N/Nb 2.89 O 10.89 A water treatment agent comprising: N/Nb 2.89 O 10.89 Structure and position in N/Nb 2.89 O 10.89 Ag/TiO inside the structure 2 The method comprises the steps of carrying out a first treatment on the surface of the The N/Nb 2.89 O 10.89 The structure is formed by regular NbO 4 Tetrahedral and N-atom doped irregular defective N-NbO 4-x Tetrahedra are connected through oxygen atoms and orderly arranged into a layered structure, and the doping defect structure can expand light absorption to a visible region, and Ag/TiO 2 Uniformly load Ag on the nano TiO 2 The particle clusters formed on the surface are wholly located between the layers of the layered structure.
Ag/TiO 2 -N/Nb 2.89 O 10.89 The preparation method of the water treatment agent comprises the following steps:
step 1, adding a certain amount of titanium isopropoxide into a mixed solution of deionized water and ethanol, stirring at a certain temperature, cooling after forming white sol, adding a certain amount of silver nitrate with concentration of 0.01M into the sol, fully stirring at room temperature, and dissolving to obtain white sol Ag/TiO 2 ；
Step 2, K is taken 2 CO 3 、Nb 2 O 5 Mixing with urea at a certain proportion, grinding, calcining at 600deg.C for 2 hr, and calcining at 900deg.C for 3 hr to obtain layered N/KNb 2.89 O 10.89 The method comprises the steps of carrying out a first treatment on the surface of the Layered N/KNb 2.89 O 10.89 Dispersing 6mol/L hydrochloric acid in deionized water solution according to the volume ratio of 1:100, stirring at room temperature for 7 days, centrifuging at high speed, taking out the lower layer solid, and washing to obtain the final productDrying to obtain layered N/HNb after no chlorine ion 2.89 O 10.89 ；
Step 3, N/HNb is added 2.89 O 10.89 Mixing trimethyl ammonium hydroxide and water according to a certain proportion, stirring at room temperature for a certain time, centrifuging at high speed to obtain upper colloidal liquid, and recording as colloid N/Nb 2.89 O 10.89 ；
Step 4, the white sol Ag/TiO in the step 1 2 Slowly adding the N-Nb colloid in the step 3 2.89 O 10.89 Stirring, centrifuging to remove the lower layer, washing, drying, calcining and the like to obtain the final product Ag/TiO 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
Preferably, in the step 1, titanium isopropoxide: water: ethanol volume ratio 20:2:80, stirring temperature 60 ℃, stirring time 12h, silver nitrate addition amount 5ml, stirring time 2h.
Preferably, urea, K is used as the nitrogen source in the step 2 2 CO 3 、Nb 2 O 5 And the ratio of the amounts of urea species is 1.1:3:0.1.
preferably, the layered N/HNb in the step 3 2.89 O 10.89 The mass ratio of the trimethyl ammonium hydroxide to the water is 1:0.3:100, the stirring time is 7 days at room temperature, and the centrifugal speed is 10000rpm.
Preferably, the white sol Ag/TiO in the step 4 2 : colloid N/Nb 2.89 O 10.89 The volume ratio is 1:1, the centrifugal rotation speed is 10000rpm, the drying temperature is 80 ℃, the drying time is 12 hours, the calcining temperature is 400 ℃, and the calcining time is 3 hours.
The beneficial effects of the invention are as follows: ag/TiO 2 Nb doped with nitrogen in the form of nanosol 2.89 O 10.89 Colloid self-assembly to form a new sterilizing and decoloring double-function lamellar water treatment agent: ag/TiO under no visible light 2 -N/Nb 2.89 O 10.89 As a conventional water treatment agent, ag and N/Nb are used 2.89 O 10.89 The laminated plates are stacked in gaps to have the dual functions of sterilization and physical adsorption decoloration; under visible light, ag/TiO 2 -N/Nb 2.89 O 10.89 As a photocatalyst, its constituent unit Ag/TiO 2 And N/Nb 2.89 O 10.89 Can excite strong oxidant-hydroxyl free radical (OH), oxidize and mineralize bacteria and colored pollutants in water under the action of the OH, and can enhance the sterilization and decolorization capability of the water treatment agent by visible light irradiation on the basis of conventional sterilization and decolorization, thus being suitable for being used in all-weather environments.
Drawings
FIG. 1 is a diagram of Ag/TiO 2 -N/Nb 2.89 O 10.89 Construction of a water treatment agent; in the figure, 1 is N/Nb 2.89 O 10.89 Laminate, 2 is TiO 2 Colloid, 3 is Ag nano particle.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
The Ag/TiO of the invention 2 -N/Nb 2.89 O 10.89 The water treatment agent comprises N/Nb 2.89 O 10.89 Structure and position in N/Nb 2.89 O 10.89 Ag/TiO inside the structure 2 A nanoparticle; N/Nb 2.89 O 10.89 From regular NbO 4 Tetrahedral and N-atom doped irregular defective N-NbO 4-x Tetrahedra are connected through oxygen atoms and orderly arranged into a layered structure, and the doping defect structure can expand light absorption to a visible region; ag/TiO 2 Uniformly load Ag on the nano TiO 2 The particle clusters formed on the surface are wholly located between the layers of the layered structure. The preparation method comprises the following steps: a certain amount of Ag/TiO 2 Colloid and nitrogen doped Nb 2.89 O 10.89 The nano colloid forms a self-assembly system, and the layered Ag/TiO is obtained through centrifugation, drying and calcination 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
Example 1:
20ml of titanium isopropoxide was dispersed in 80ml of ethanol solution, and 2ml of the solution was addedDeionized water is stirred and refluxed for 12 hours at 60 ℃ to form white colloid; cooling to room temperature, adding 5ml of 0.01M silver nitrate solution into the colloid, and stirring for 2 hr to obtain colloid Ag/TiO 2 。
Will K 2 CO 3 、Nb 2 O 5 And urea in a mass ratio of 1.1:3: weighing 0.1, adding into agate mortar, grinding, calcining at 600deg.C for 2 hr, and calcining at 900deg.C for 3 hr to obtain layered N/KNb 2.89 O 10.89 The method comprises the steps of carrying out a first treatment on the surface of the Layered N/KNb 2.89 O 10.89 Dispersing 6mol/L hydrochloric acid in deionized water solution according to a volume ratio of 1:100, stirring at room temperature for 7 days, centrifuging at high speed, taking down the solid, washing until no chloride ions exist (ICP detection), and drying to obtain layered N/HNb 2.89 O 10.89 。
N/HNb 2.89 O 10.89 Mixing trimethyl ammonium hydroxide and water according to a mass ratio of 1g to 0.3 g to 100 g, stirring at room temperature for 7 days, centrifuging at 10000rpm, taking an upper colloidal liquid, and recording as a colloid N/Nb 2.89 O 10.89 。
50ml of colloidal Ag/TiO 2 Slowly drop-wise adding 50ml of colloidal N/Nb 2.89 O 10.89 In the process, stirring, centrifuging at 10000rpm, drying at 80 ℃ for 12h, calcining at 400 ℃ for 3h to obtain the visible light enhanced sterilization and decoloration dual-function Ag/TiO 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
Example 2:
dispersing 20ml of titanium isopropoxide into 80ml of ethanol solution, adding 4ml of deionized water, stirring and refluxing for 24 hours at 40 ℃ to form white colloid; cooling to room temperature, adding 8ml of 0.01M silver nitrate solution into the colloid, and stirring for 2 hr to obtain colloid Ag/TiO 2 。
Will K 2 CO 3 、Nb 2 O 5 And urea in a mass ratio of 1.1:3: weighing 0.1, adding into agate mortar, grinding, calcining at 600deg.C for 2 hr, and calcining at 900deg.C for 3 hr to obtain layered N/KNb 2.89 O 10.89 The method comprises the steps of carrying out a first treatment on the surface of the Layered N/KNb 2.89 O 10.89 And 6mol/L hydrochloric acid are dispersed in deionized water solution according to the volume ratio of 1:100, and after stirring for 7 days at room temperature, the solution is separated at a high speedAfter the lower layer solid is taken out and washed till no chloride ions are contained (ICP detection), the layered N/HNb is obtained after drying 2.89 O 10.89 。
N/HNb 2.89 O 10.89 Mixing trimethyl ammonium hydroxide and water according to a mass ratio of 1g to 0.5 g to 100 g, stirring at room temperature for 7 days, centrifuging at 12000rpm, taking an upper colloidal liquid, and recording as a colloid N/Nb 2.89 O 10.89 。
50ml of colloidal Ag/TiO 2 Slowly drop-wise adding 50ml of colloidal N/Nb 2.89 O 10.89 In the process, stirring, centrifuging at 9000rpm, drying at 80 ℃ for 12h, and calcining at 450 ℃ for 3h to obtain the visible light enhanced sterilization and decoloration dual-function Ag/TiO 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
Example 3:
dispersing 20ml of titanium isopropoxide into 80ml of ethanol solution, adding 1ml of deionized water, stirring and refluxing for 12 hours at 70 ℃ to form white colloid; cooling to room temperature, adding 2ml of 0.01M silver nitrate solution into the colloid, and stirring for 2 hr to obtain colloid Ag/TiO 2 。
Will K 2 CO 3 、Nb 2 O 5 And urea in a mass ratio of 1.1:3: weighing 0.1, adding into agate mortar, grinding, calcining at 600deg.C for 2 hr, and calcining at 900deg.C for 3 hr to obtain layered N/KNb 2.89 O 10.89 The method comprises the steps of carrying out a first treatment on the surface of the Layered N/KNb 2.89 O 10.89 Dispersing 6mol/L hydrochloric acid in deionized water solution according to a volume ratio of 1:100, stirring at room temperature for 7 days, centrifuging at high speed, taking down the solid, washing until no chloride ions exist (ICP detection), and drying to obtain layered N/HNb 2.89 O 10.89 。
N/HNb 2.89 O 10.89 Mixing trimethyl ammonium hydroxide and water according to a mass ratio of 1g to 0.1 g to 100 g, stirring at room temperature for 7 days, centrifuging at 9000rpm, taking an upper colloidal liquid, and recording as a colloid N/Nb 2.89 O 10.89 。
50ml of colloidal Ag/TiO 2 Slowly drop-wise adding 50ml of colloidal N/Nb 2.89 O 10.89 In the process, stirring, centrifuging at 10000rpm, drying at 80 ℃ for 12h, calcining at 400 ℃ for 5h to obtain the visible light irradiation increaseStrong sterilizing and decoloring double-function Ag/TiO 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
Claims (5)
1. The preparation method of the visible light enhanced sterilization and decoloration dual-function water treatment agent is characterized by comprising the following steps of:
step 1, adding a certain amount of titanium isopropoxide into a mixed solution of deionized water and ethanol, stirring at a certain temperature, cooling after forming white sol, adding silver nitrate with the concentration of 0.01M into the sol, fully stirring at room temperature for 2 hours, and dissolving to obtain white sol Ag/TiO 2 ；
Step 2, K is taken 2 CO 3 、Nb 2 O 5 And urea in a molar ratio of 1.1:3:0.1, calcining at 600 ℃ for 2h and then at 900 ℃ for 3h to obtain layered N/KNb 2.89 O 10.89 The method comprises the steps of carrying out a first treatment on the surface of the Layered N/KNb 2.89 O 10.89 Dispersing 6mol/L hydrochloric acid in deionized water solution according to a volume ratio of 1:100, stirring at room temperature for 7 days, centrifuging at high speed, taking down the solid, washing until no chloride ions exist, and drying to obtain layered N/HNb 2.89 O 10.89 ；
Step 3, N/HNb is added 2.89 O 10.89 Mixing tetramethyl ammonium hydroxide and water according to a certain proportion, stirring for 7 days at room temperature, centrifuging at high speed to obtain upper colloidal liquid, and recording as colloid N/Nb 2.89 O 10.89 ；
Step 4, the white sol Ag/TiO in the step 1 2 Slowly adding the N-Nb colloid in the step 3 2.89 O 10.89 Stirring, centrifuging to remove the lower layer, washing, drying at 80deg.C for 12 hr, and calcining to obtain final product Ag/TiO 2 -N/Nb 2.89 O 10.89 And (3) a water treatment agent.
2. The method of manufacturing according to claim 1, characterized in that: titanium isopropoxide in the step 1: water: ethanol volume ratio 20: 80, stirring temperature 40-70 deg.c, stirring time 12-24 hr and silver nitrate adding amount 2-8ml.
3. According to the weightsThe method of claim 1, wherein: in the step 3, layered N/HNb 2.89 O 10.89 The mass ratio of the tetramethylammonium hydroxide to the water is 1 (0.1-0.5): 100, and the centrifugal speed is 9000-12000rpm.
4. The method of manufacturing according to claim 1, characterized in that: in the step 4, white sol Ag/TiO 2 : colloid N/Nb 2.89 O 10.89 The volume ratio is 1:1, the centrifugal rotation speed is 9000-10000rpm, the calcining temperature is 400-450 ℃, and the calcining time is 3-5h.
5. The method of manufacturing according to claim 1, characterized in that: ag/TiO without visible light 2 -N/Nb 2.89 O 10.89 As a conventional water treatment agent, ag and N/Nb are used 2.89 O 10.89 The laminated plates are stacked in gaps to have the dual functions of sterilization and physical adsorption decoloration; under visible light, ag/TiO 2 -N/Nb 2.89 O 10.89 As a photocatalyst, its constituent unit Ag/TiO 2 And N/Nb 2.89 O 10.89 Can excite strong oxidant-hydroxyl free radical (OH), oxidize and mineralize bacteria and colored pollutants in water under the action of the OH, and the visible light can enhance the sterilization and decolorization capability of the water treatment agent, thus being suitable for all-weather environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820596.XA CN114455664B (en) | 2021-07-20 | 2021-07-20 | Visible light enhanced sterilization and decoloration dual-functional water treatment agent |
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| JP2008006328A (en) * | 2006-06-27 | 2008-01-17 | National Institute For Materials Science | Photocatalyst comprising visible light responsive composite oxide semiconductor |
| CN103878005A (en) * | 2014-03-27 | 2014-06-25 | 常州大学 | Carbon-modified silver phosphate/titanoniobate compound visible light pholocatalyst and preparation thereof |
| CN108339574A (en) * | 2018-04-24 | 2018-07-31 | 闽江学院 | A kind of titanium matrix composite of visible light photocatalytic degradation rhodamine B and its preparation |
| CN109317133A (en) * | 2018-10-30 | 2019-02-12 | 黄冈师范学院 | A kind of microwave synthesis method of niobium pentaoxide/nano titania compound photochemical catalyst |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008006328A (en) * | 2006-06-27 | 2008-01-17 | National Institute For Materials Science | Photocatalyst comprising visible light responsive composite oxide semiconductor |
| CN103878005A (en) * | 2014-03-27 | 2014-06-25 | 常州大学 | Carbon-modified silver phosphate/titanoniobate compound visible light pholocatalyst and preparation thereof |
| CN108339574A (en) * | 2018-04-24 | 2018-07-31 | 闽江学院 | A kind of titanium matrix composite of visible light photocatalytic degradation rhodamine B and its preparation |
| CN109317133A (en) * | 2018-10-30 | 2019-02-12 | 黄冈师范学院 | A kind of microwave synthesis method of niobium pentaoxide/nano titania compound photochemical catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 尿素氮源掺杂二氧化钛对染料可见光脱色的研究;姚俊;王潮霞;付少海;田安丽;王春莹;;纺织学报(第03期);全文 * |
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