216 results about "Rhodamine B" patented technology

The invention discloses a ratio-type fluorescence analysis method for determining sodium dehydroacetate, which comprises the following steps: under an alkaline condition, synthesizing tetrafluoroterephthalic acid oxide, namely a fluorescent substance TFAox, by oxidizing tetrafluoroterephthalic acid with hydrogen peroxide, and forming a ratio-type fluorescence probe by the fluorescent substance and rhodamine B, a ratio-type fluorescence analysis method of sodium dehydroacetate is constructed based on the ratio-type fluorescence probe, and the method can be successfully applied to determination of sodium dehydroacetate in a water sample and a bread sample. The ratio-dependent fluorescence detection method for determining sodium dehydroacetate provided by the invention has the characteristics of wide linear range, high detection sensitivity, no interference of coexisting substances on determination, good selectivity and the like.

The present invention belongs to the technical field of mechanochromic materials, and specifically relates to a mechanochromic material containing rhodamine with a hydantoin structure, and its preparation method and application. The rhodamine mechanochromic material containing a hydantoin structure is shown in structure (I), with rhodamine B as the matrix, reduced to rhodamine alcohol, oxidized to generate rhodamine aldehyde, and reacted with hydantoin to prepare a six-membered spirocyclic rhodamine containing a hydantoin structure. The rhodamine compound containing a hydantoin structure involved in the present invention has good ion interference resistance, exhibits photochromic properties in a dichloromethane solvent, and has the properties of mechanical stress discoloration and solvent mixing stress discoloration with high contrast and good repeatability. The solid powder of the rhodamine mechanochromic material containing a hydantoin structure has the characteristic of changing color upon grinding. After the action of mechanical force, the color of the powder changes from yellow to pink, and a reversible color change is achieved during the grinding-heating process.

A system for the synthesis of a cost-effective photocatalyst based on the FeOOH / CuBi2O4 heterostructure, consisting of: a) a CuBi2O4 synthesis plant for the production of CuBi2O4 (CBO) microspheres from Bi(NO3)3·6H2O and Cu(NO3)2.3H2O precursors; b) a heterostructure formation unit is configured to deposit FeOOH nanoparticles onto an outer surface of the CBO microspheres to form an FeOOH / CBO heterostructure; and c) a processing unit configured to wash and dry the FeOOH / CBO heterostructure to obtain the photocatalyst.

The invention discloses a polyacid-based metal viologen framework crystalline material as well as a preparation method and application thereof, and belongs to the technical field of heterogeneous catalytic materials. The crystalline material is synthesized in one step through a hydrothermal method, the molecular formula is Cu2 (H2O) 2 (L) 2 [PW12O40] [OH]. 2H2O, the crystalline material belongs to a monoclinic system, the space group is P21, the cell parameters are alpha = 90 degrees, beta = 114.208 (2) degrees and gamma = 90 degrees, and the structure of the crystalline material is determined through X-ray diffraction. According to the material, accurate compounding of polyacid clusters and metal viologen on the molecular level is achieved, an effective electron transmission channel is constructed, separation of photon-generated carriers is remarkably promoted, and excellent photocatalytic activity is shown. At the ambient temperature, the crystalline material can be used as a catalyst to efficiently degrade dye pollutants (such as methylene blue and rhodamine B) in a water body, the degradation rate within 60 minutes exceeds 90%, and the crystalline material has good cycle stability and structural durability.

The present invention discloses a six-membered spirocyclic rhodamine copper ion fluorescent probe containing a benzothiazole hydrazine Schiff base structure, a preparation method thereof, and an application thereof. The six-membered spirocyclic rhodamine copper ion fluorescent probe containing a benzothiazole hydrazine Schiff base structure has the structural formula shown in (I). The preparation method comprises the following steps: weighing equimolar amounts of 2-aldehyde rhodamine B and 2-hydrazine benzothiazole, dissolving them in dry ethanol, heating to 80°C for reaction for 4 hours, cooling to room temperature, and distilling under reduced pressure. The obtained solid is purified by column chromatography to obtain a light pink solid, which is the six-membered spirocyclic rhodamine copper ion fluorescent probe containing a benzothiazole hydrazine Schiff base structure. The fluorescent probe of the present invention has good sensitivity to copper ions and can qualitatively and quantitatively detect copper ions in a solution.

The invention relates to the technical field of preparation of photocatalytic materials, in particular to a preparation method of a ZnWO4 and Bi2WO6 composite photocatalyst, which is characterized in that a monomer photocatalyst of ZnWO4 and a monomer photocatalyst of Bi2WO6 are respectively prepared by a hydrothermal method, and then a binary ZnWO4 / Bi2WO6 composite photocatalyst is prepared by a secondary hydrothermal method. The composite structure of the composite photocatalyst is beneficial to separation and transfer of photon-generated carriers, an organic pollutant rhodamine B solution with the concentration of 10 ppm can be degraded, excellent photocatalytic degradation performance is shown under excitation of visible light, and the preparation method is simple, easy to operate and suitable for application and popularization.

The invention relates to an amorphous bismuth molybdate photocatalytic material as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method of the amorphous bismuth molybdate photocatalytic material comprises the following steps: (1) dissolving Bi (NO3) 3.5 H2O in an HAC solution, uniformly mixing and stirring at room temperature, and marking as a solution A; dissolving Na2MoO4 in water, adding a water-soluble anionic polymer, uniformly stirring, and marking as a solution B; and (2) slowly dropwise adding the solution B into the solution A, carrying out a co-precipitation reaction under the conditions of normal temperature and normal pressure, after dropwise adding is completed, maintaining heating and stirring for a period of time, then carrying out normal-temperature stirring, and after stirring is completed, carrying out centrifugation, washing and drying to obtain the amorphous bismuth molybdate photocatalytic material A-Bi2MoO6. The modified amorphous A-Bi2MoO6 provided by the invention has a relatively large specific surface area and more mesoporous structures, so that the adsorption of rhodamine B is enhanced, and the adsorbed dye can be efficiently catalyzed and degraded under the action of illumination.

The invention discloses a mixed valence copper doped bismuth vanadate nanodisk photocatalyst and a preparation method and application thereof, a main body of the catalyst is a bismuth vanadate nanodisk, copper is doped in the bismuth vanadate nanodisk, and the copper is composed of Cu < + > and Cu < 2 + >; the catalyst has the characteristics of high stability, simplicity in implementation, high universality and the like. The doped copper ions not only can improve the light absorption capacity of the bismuth vanadate material, but also can promote the rapid separation of photo-induced electrons and holes of the bismuth vanadate material by virtue of the mixed valence state of the copper ions, and improve the carrier dynamics on the material, so that the photocatalytic efficiency of the bismuth vanadate material is improved. The bismuth vanadate photocatalyst doped with the copper ions in the mixed valence state has an efficient photocatalytic degradation effect on pollutants such as rhodamine B and the like, and has a wide application prospect in the technical aspects of environmental pollutant degradation and green advanced oxidation.

According to the method, melamine and urea are used as carbon and nitrogen sources, hollow tubular phosphorus-doped carbon nitride is constructed by adopting a sodium polyphosphate-assisted hydrothermal-thermal polymerization method, molybdenum disulfide is loaded on the surface of P-TCN in a hydrothermal in-situ growth mode, and the hollow tubular phosphorus-doped heterojunction photocatalyst is obtained. The hollow tubular phosphorus-doped heterojunction photocatalyst P-TCN / MoS2 is prepared; the catalyst disclosed by the invention shows excellent degradation performance on ciprofloxacin, levofloxacin, rhodamine B and methylene blue under an illumination condition. The catalyst disclosed by the invention is simple in preparation method, low in cost and easily available in raw materials, and has a wide application prospect in the field of photocatalytic treatment of antibiotic and dye wastewater.

The invention discloses a preparation method and application of a bimetallic nano-enzyme induced MOFs (at) CDs material, and the preparation method at least comprises the following steps: I, dissolving FeCl3, CoCl2 and 2-aminoterephthalic acid in N, N '-dimethylformamide to form a mixed solution I, and carrying out a reaction I to obtain a bimetallic MOFs material; step II, mixing tricarballylic acid and m-phenylenediamine, and carrying out a reaction II to obtain carbon dot powder; step III, dissolving the carbon dot powder obtained in the step II in methanol, and adding rhodamine B dye to obtain a CDs material; and IV, dissolving the bimetallic MOFs material obtained in the step I and the CDs material obtained in the step III in water, stirring, and drying to obtain the MOFs (at) CDs material. The synthesized nano-enzyme is simple to prepare and high in catalytic activity, the carbon dot material is encapsulated into the MOFs material, the fluorescence characteristic of the MOFs material is enhanced, and the carbon dot material is combined with o-phenylenediamine to be used for detecting H2O2.

The invention provides spherical lignin-phenolic resin, a preparation method thereof and application of the spherical lignin-phenolic resin in adsorption of N-containing organic dye, and belongs to the technical field of adsorption materials. The lignin-phenolic resin with the regular spherical morphology can be prepared through a one-step condensation polymerization reaction by taking lignin, hydroquinone and trioxymethylene as raw materials under an acidic catalysis condition and adopting a reversed-phase suspension polymerization method, the lignin belongs to a renewable resource and has the characteristics of low cost and environmental friendliness, and the lignin-phenolic resin can be used for preparing the lignin-phenolic resin with the regular spherical morphology. The phenolic resin can replace phenols to become a main phenol source, the substitution rate can reach 75%, and the yield of the synthesized phenolic resin reaches up to 60-80%. Besides, abundant phenolic hydroxyl groups, sulfonic acid groups and other oxygen-containing groups can be introduced into the resin by selecting the types of monomers, the cross-linked structure of the resin is changed by regulating and controlling the proportion of the monomers, the adsorption capacity of N-containing organic dyes is effectively improved, and efficient adsorption of rhodamine B and methylene blue can be achieved.

The invention discloses a preparation method of a BiOBr / LaNiO3 nanofiber composite photocatalyst, which is characterized in that a perovskite material LaNiO3 prepared by electrostatic spinning is used as a carrier, and BiOBr is loaded on the fiber surface by a solvothermal method to form a heterojunction structure. According to the composite material, separation of photon-generated carriers is promoted through heterojunction of BiOBr and LaNiO3 nanofibers, and the catalytic activity under visible light is remarkably improved. The invention further discloses application of the prepared BiOBr / LaNiO3 nanofiber composite photocatalyst in degradation of rhodamine B. The degradation efficiency of the BiOBr / LaNiO3 nanofiber composite photocatalyst on rhodamine B can reach 93% within 90 min, and after four times of circulation, the composite material shows good circulation stability. The method has the advantages of being low in cost, high in stability, environmentally friendly and the like, and a green solution is provided for organic dye pollution control.

The invention provides a preparation method and application of a non-noble metal carbon felt composite electrode applied to high-salinity wastewater, a nickel-iron bimetallic active component is loaded on a carbon felt substrate through a one-step hydrothermal method, and then the nickel-iron bimetallic active component is treated with sodium hydroxide for 1 h to prepare the electrode. And when being applied to degradation of rhodamine B-containing wastewater under strong alkali and high salt conditions, the rhodamine B-containing wastewater degradation catalyst shows good catalytic performance, stability and salt resistance. According to the electrochemical composite electrode material provided by the invention, the carbon felt is used as an electrode substrate, and the carbon felt is combined with the non-noble metal nickel-iron bimetallic active component loaded on the carbon felt, so that the cost is relatively low, and the electrochemical composite electrode material is green and efficient. And the loading of bimetallic components on the substrate can be completed by a one-step hydrothermal method, the operation process is convenient, the three-dimensional porous structure of the carbon felt substrate provides a rich specific surface area, and the catalytic performance and the stability are effectively improved by loading a large amount of nickel-iron bimetallic active sites inside and outside the substrate.

The invention discloses a preparation method and application of a metal-organic dye adsorbent based on sulfonyl calixarene, Ni (II) is used as a metal node, and the metal-organic dye adsorbent is prepared through a solvothermal directional assembly strategy by utilizing the synergistic coordination effect of a dicarboxylic acid ligand 4, 4 '-dithiobisbenzoic acid and p-tert-butylsulfonyl calix [4] arene (H4TBSC). The sulfonyl calixarene-based structure metal-organic dye adsorbent with definite inner and outer cavity partitions is successfully constructed. The adsorption material comprises a central large cavity and two symmetrically distributed peripheral cavities, and the special structure enables the adsorption material to show excellent selective adsorption performance on Congo red (CR) dye molecules. And efficient separation of a Congo red / rhodamine B (RhB) mixed system can be realized through a molecular size screening effect. The invention provides a new thought and method for developing a multifunctional supramolecular adsorption material based on dynamic coordination engineering, and has a wide application prospect in the fields of dye separation and wastewater treatment.

The application relates to the technical field of complex nanomaterials, in particular to a preparation method of an indium complex nanomaterial, the obtained material and application thereof. The application discloses a preparation method of an indium complex nanomaterial, which comprises the following steps: adding inorganic indium salt and 5-bromoisophthalic acid into N,N-dimethylformamide to obtain a transparent reaction liquid; carrying out a solvothermal reaction on the reaction liquid in a reaction kettle; cooling the reaction kettle after the solvothermal reaction, and separating to obtain a solid crude product; washing the solid crude product, drying, and obtaining the indium complex nanomaterial. The application also discloses the indium complex nanomaterial prepared by the above preparation method and application of the indium complex nanomaterial in adsorption of organic dye wastewater. The indium complex nanomaterial prepared by the application has excellent adsorption performance on Congo red dye in a water environment, and also has certain adsorption performance on rhodamine B and methyl orange, and has relatively high practical application value in treatment of organic dye wastewater containing Congo red dye.

This invention discloses a GSH-functionalized carbon dots / rhodamine B ratiometric fluorescence system, its construction method, and its application in nitrite detection. GSH-CDs are synthesized via a one-step hydrothermal method by mixing citric acid, o-phenylenediamine, glutathione, and hydrochloric acid in water. Unreacted precursors and small molecules are removed by purification, and the GSH-CDs are obtained by freeze-drying. The ratiometric fluorescence system is constructed by mixing rhodamine B, GSH-CDs, and an acidic buffer solution. The fluorescence intensity ratio F of GSH-CDs to rhodamine B is established. 460 / F 590 With nitrite (NO2) ‑ A calibration curve between concentrations was obtained, and the NO2 in the actual sample was experimentally detected using the spiked recovery method. ‑ Content. Under acidic conditions, with NO2... ‑ With increasing concentration, the GSH-CDs / RhB fluorescence intensity ratio (I 460 / I 590 Significant changes occurred, with the fluorescence intensity ratio compared to NO2. ‑ There is a good linear relationship between concentrations. Compared with the detection platform based on GSH-CDs, the ratio fluorescence system provided by this invention has a lower detection limit and significantly higher sensitivity.

The invention discloses a conductive hydrogel preparation method based on a photocuring 3D printing technology. The photocurable conductive hydrogel is prepared by preparing conductive hydrogel printing ink and utilizing a photocuring 3D printing technology. The preparation method comprises the steps that conductive hydrogel is prepared through two steps of conductive hydrogel printing ink preparation and photocuring 3D printing, the printing ink is prepared from acrylamide, deionized water, glycerol, poly (ethylene glycol) diacrylate, a photoinitiator 819, rhodamine B, magnesium chloride and sodium chloride, the material cost is low, and the preparation process is simple; the printing ink is prepared into the conductive hydrogel in a photocuring 3D printing mode. And a resistance signal detection circuit is used for detecting a resistance signal. The prepared conductive hydrogel can be applied to the fields of wearable equipment, robots and the like.

The application belongs to the technical field of ion detection, and particularly relates to a preparation method of a rapid detection uranyl ion ratio type fluorescent probe, comprising the following steps: dissolving rhodamine B and phosphorus oxychloride in 1,2-dichloroethane to obtain product 1; dissolving the product 1 in acetonitrile, adding 2-aminobenzimidazole and triethylamine, and stirring under heating; after the reaction is completed, column chromatography purification is carried out, and vacuum drying is carried out to obtain the target product fluorescent probe RBN; and the fluorescent probe RBN is dissolved in DMSO to prepare a mother liquor. The fluorescent probe has the advantages of rapid response to uranyl ions, simple synthesis route, simple detection equipment and method, and the like, and can be used for qualitative and quantitative detection of uranyl ions in an environment and a biological system.

The invention discloses a baijiu detection method based on a colorimetric and fluorescent dual-signal sensing array, and relates to the technical field of substance detection and analysis. According to the detection method, the principle that rhodamine B and rhodamine 6G have remarkable ultraviolet-visible spectrums and fluorescence characteristic peaks, and rhodamine B and rhodamine 6G can be accelerated to be catalytically degraded by MnONSs under the acidic condition is utilized, so that optical signals (colorimetric-fluorescence double signals) of rhodamine B and rhodamine 6G can be adjusted by adjusting the catalytic action of MnONSs; according to the method, a colorimetric and fluorescent dual-signal sensing array is constructed, then the dual-signal sensing array is utilized to form characteristic fingerprints of various Baijiu samples, rapid and accurate detection of Baijiu is achieved, and the method is few in types of detection materials, simple and convenient to operate and more suitable for large-scale popularization and application.

The invention discloses a preparation method of a photocatalytic material for wastewater treatment, and belongs to the technical field of photocatalytic materials. The preparation method specifically comprises the following steps: S1, preparing TiO2 (at) GaP (at) Fe2O3; s2, absolute ethyl alcohol is added into TiO2 (at) GaP (at) Fe2O3, dimethyl diallyl ammonium chloride, modified graphene oxide and a silane coupling agent are added after ultrasonic dispersion, and after sufficient dispersion, a photocatalytic material is obtained through drying; the modified graphene oxide is graphene oxide grafted with disulfide bonds and polyacrylic acid. TiO2 is modified through GaP, ferric oxide powder, dimethyl diallyl ammonium chloride and modified graphene oxide, the photocatalytic material for wastewater treatment is obtained, and the photocatalytic material has high photocatalytic performance on wastewater containing methylene blue and / or rhodamine B under natural sunlight; meanwhile, the high photocatalytic performance is still kept after multiple times of recycling.

The present invention discloses a rhodamine B-doped silica / xylan carbon dot composite material and a preparation method thereof. In the method, rhodamine B and tetraethyl silicate are uniformly mixed to form RhB@SiO2. The carbon dots are covalently linked to the RhB@SiO2 to obtain RhB@SiO2 / BCD. A short DNA double helix is ​​formed by grafting a complementary chain onto the surface of the BCD, and a single-stranded aptamer with a quencher attached to one end is coupled to the carbon dots. The single-stranded aptamer specifically targets Vibrio parahaemolyticus. When Vibrio parahaemolyticus is present in the test sample, Apt.D detaches from the BCD surface and binds to a recognition site on the surface of the Vibrio parahaemolyticus, restoring fluorescence. Using the red fluorescence intensity R emitted by RhB@SiO2 as an internal standard, quantitative detection of Vibrio parahaemolyticus is performed based on the ratio of the blue fluorescence intensity B of BCD to R.

The application discloses a kind of stable crystal form photocatalyst and its preparation method, application, belong to photocatalyst technical field, the catalyst is 1-ethyl-3-methyl imidazole tetrafluoroborate ion liquid assisted La doped TiO2 Photocatalyst, La doping ratio 0.12-0.13%, ion liquid content 12-13 mL / mg.It is prepared using sol-gel method, by precisely controlling A, B liquid ratio and 595-605 DEG C, 1.8-2.2h calcination process, realize lattice defect controllable and crystal form stable.When applied, the mass ratio of catalyst and rhodamine B is 99-101:1, and rhodamine B in wastewater can be efficiently degraded under illumination for ≥80 min, with a degradation rate of ≥92%.The degradation rate is still ≥88% after being reused for 5 times.The catalyst has stable crystal form, high photocatalytic efficiency, environmental protection and economy, and is suitable for treating wastewater containing rhodamine B in multiple industries.

The invention discloses application of RMTE in preparation of a medicine for preventing and controlling grass carp reovirus. The hemorrhagic disease caused by the grass carp reovirus (GCRV) is a key bottleneck restricting healthy development of the grass carp breeding industry, and the current vaccine for treating the grass carp reovirus (GCRV) has the problems of unstable immune protection effect, low protection rate for crossing of strains of different genotypes and the like, so that the research and development process of antiviral drugs is slow. The invention discloses an influence and a potential mechanism of a rhodamine B-ethyl sulfide condensation compound (RMTE) on GCRV (Growth Factor Receptor Virus) infection. Results show that the RMTE can significantly inhibit expression of VP6 and VP7 genes in GCRV infected cells, can effectively relieve expression inhibition of GCRV on GPX4, Caspase and p53 genes and promote expression of the three genes, and prove that the RMTE has a significant inhibition effect on GCRV infection and plays an antiviral effect through multiple ways. Research results provide new potential drugs and theoretical basis for prevention and control of GCRV.

The invention provides a near-infrared light NIR response-based dual-regulation nano drug delivery system and application thereof, the nano drug delivery system takes mesoporous silica as a carrier, and alendronate sodium is coupled on the surface of the carrier to increase bone targeting; mesopores in the carrier are blocked by rhodamine RH, nitric oxide NO can be consumed to generate rhodamine B, and bioactive drugs in the carrier are released. The invention constructs a systemic drug carrier with bone targeting and diabetic bone microenvironment response release, and solves the problems that the bone healing ability of diabetic patients is significantly reduced, and traditional local treatment is difficult to effectively improve systemic bone microenvironment disorder; the problems that an existing local drug system cannot be released according to needs, local NO and NO in bone marrow are difficult to efficiently remove, and macrophages are difficult to transform to repair-promoting M2 type are solved.

The application discloses a Bi4Ti3O12 nanosheet piezoelectric catalyst and a preparation method and application thereof. Bi(NO3)3*5H2O, Ti(OC4H9)4 and Ta2O5 are used as raw materials to prepare a precursor through co-precipitation, NaCl and KCl are used as molten salts to mix the precursor, and then ball milling is carried out, the obtained powder after the ball milling is dried, and then a molten salt reaction is carried out, so that the product is obtained, and after washing and drying, the Bi4Ti3O12 nanosheet piezoelectric catalyst is obtained, and is successfully applied to piezoelectric catalytic degradation of rhodamine B. The prepared Bi4Ti3O12 nanosheet piezoelectric catalyst is a nanosheet with high purity and good crystallinity, and a high-activity exposed surface is beneficial to improving the transmission and separation of photo-generated charges, improving the piezoelectric catalytic performance of the Bi4Ti3O12 nanosheet piezoelectric catalyst, and the preparation process is simple.

The invention provides a Motixazotide-nitrogen mustard conjugate and a preparation method and application of a fluorescent probe of the Motixazotide-nitrogen mustard conjugate, and belongs to the field of polypeptide preparation and biological medicine. According to the present invention, a solid phase polypeptide synthesis method is adopted to covalently link a DNA alkylation reagent nitrogen mustard and a CXCR4 targeting peptide Motixazotide, and further couple with a fluorescent dye so as to successfully prepare a series of novel conjugates and fluorescent probes thereof; experiments prove that the Motixazotide-nitrogen mustard conjugate and the fluorescent probe thereof prepared by the invention can be used for remarkably improving the anti-tumor activity of nitrogen mustard and the targeting property of the nitrogen mustard to tumor cells. Meanwhile, the rhodamine B labeled dinitrogen mustard conjugate BCCR has a specific targeting effect on a CXCR4 receptor and a dual targeting effect on a tumor cell nucleus. The conjugate realizes real-time tracing of the whole process of tumor targeting, cell delivery and nuclear localization, and provides a powerful tool for curative effect evaluation and mechanism research, so that the conjugate has good clinical transformation prospect and application value.

The present invention discloses a method for preparing a Ti3C2MXene / CdTiO3 heterojunction photocatalyst. The present invention adopts EDTA complexation and solvent thermal method to prepare Ti3C2MXene / CdTiO3 heterojunction photocatalyst. A soluble cadmium salt and a complexing agent are added to deionized water to obtain an EDTA-Cd solution, which is added to an ethanol solution of tetrabutyl titanate under magnetic stirring. After uniform stirring, the pH of the solution is adjusted with sodium hydroxide, and then Ti3C2MXene is added. A solvent thermal reaction is then carried out to obtain a Ti3C2MXene / CdTiO3 heterojunction photocatalyst with good visible light catalytic performance. The photocatalyst obtained by the method of the present invention can achieve a degradation rate of 76% for rhodamine B in water under visible light. Ti3C2MXene / CdTiO3 makes up for the shortcomings of CdTiO3, such as large band gap, ultraviolet light response, and low photocatalytic activity. In addition, Ti3C2MXene / CdTiO3 has good stability and can still maintain good catalytic activity and stability after five cycles of degradation. The method of the invention is economical, green and has good industrial application prospects.

The application discloses a CuS / Cu3(MoO4)2(OH)2 composite and a preparation method and application thereof. The CuS / Cu3(MoO4)2(OH)2 composite material is prepared by using CuCl2, Na2MoO4 and Na2S as raw materials and adopting a hydrothermal method. The CuS / Cu3(MoO4)2(OH)2 composite acoustic catalyst provided by the application can be used for ultrasonic catalytic degradation of organic pollutants in cooperation with H2O2. When the ultrasonic power is 500 W and the ultrasonic time is 30 min, the degradation rates of acid orange 7, tetracycline, rhodamine B, congo red, methylene blue and basic red 2 in water can reach 89.6(±5.78)%, 92.91(±0.36)%, 96.93(±0.16)%, 97.73(±0.61)%, 98.53(±0.37)% and 99.87(±0.18)%, respectively.

The application provides a spherical lignin-phenolic resin and a preparation method and application thereof in adsorbing N-containing organic dyes, and belongs to the technical field of adsorbing materials. The lignin-phenolic resin with regular spherical morphology is prepared by one-step condensation polymerization reaction through the reverse suspension polymerization method under acid catalysis, wherein lignin, hydroquinone and trioxane are used as raw materials. The lignin belongs to renewable resources, has the characteristics of low cost and environmental friendliness, can replace phenol as the main phenol source, and the replacement rate can reach 75%. The yield of the synthesized phenolic resin is as high as 60-80%. In addition, the monomer type can be selected to introduce rich phenolic hydroxyl groups, sulfonic acid groups and other oxygen-containing groups in the resin, the monomer ratio is controlled to change the crosslinking structure of the resin, the adsorption capacity of the resin for N-containing organic dyes is effectively improved, and efficient adsorption of rhodamine B and methylene blue can be realized.

The invention discloses a fluorescent probe for recognizing lithium ions and a preparation method and application thereof.The method comprises the steps that rhodamine B, HATU and methyl 3-amino-3-methyl-1-butyrate are mixed and subjected to a first-step reaction, a first reactant is obtained, the first reactant, ethyl alcohol and sodium hydroxide are mixed and subjected to a second-step reaction, a second reactant is obtained and subjected to a third-step reaction, and the fluorescent probe for recognizing the lithium ions is obtained. And mixing the second reactant, crown ether, EDCI and HOBT, and carrying out a third-step reaction to obtain the fluorescent probe. According to the method, lithium ions in a complex environment can be efficiently recognized, and raw material waste and resource loss in the production process are avoided.