84 results about "Congo red" patented technology

The invention relates to the technical field of dye separation, and discloses a loose nanofiltration membrane and a preparation method and application thereof.The loose nanofiltration membrane is prepared from a multi-acyl chloride organic solution and an amine monomer water-phase solution on the surface of a porous supporting membrane through a one-step interfacial polymerization method, and the rejection rate of the loose nanofiltration membrane to methyl blue, Congo red and other dyes is 95% or above; meanwhile, the loose nanofiltration membrane has high water permeability and excellent dye / inorganic salt separation selectivity, and is expected to have wide application prospects in the fields of dye production and purification and dye wastewater desalination.

The invention discloses application of a magnetic nano composite material as an adsorbent in removal of organic dye in water, and belongs to the technical field of application of composite materials, the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water, the adsorption capacity of Congo red (CR) reaches up to 1603.54 mg / g and 1968.83 mg / g, and the adsorption capacity of the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water. The adsorption of the two adsorbents to the CR accords with a quasi-secondary kinetic model and a Langmuir isotherm model, and belongs to single-layer chemical adsorption. Compared with an adsorbent in the prior art, the Fe3O4 (at) TAPT-OMePDA and the Fe3O4 (at) TAPT-TFPDA have the advantages that the porosity is high, the adsorption efficiency is high, the selectivity is good, and the repeated utilization rate is good.

The invention discloses peroxidase and application thereof, and relates to the field of bioengineering. The peroxidase POD-8 provided by the invention has very good enzyme activity for oxidizing phenol substrates, especially has the highest enzyme activity for 2, 6-DMP, has very good persistence, and can keep stable enzyme activity within 10 minutes; the resistance to various metal ions is relatively high, and the enzyme activity of 90% or above can still be kept in the presence of various metal ions with various concentrations; the POD-8 has a strong decolorizing capability on a plurality of dyes, especially has a decolorizing efficiency of about 25% on Congo red and amino black 10B in 24 h, and has a good application prospect in the aspect of dye wastewater treatment.

The invention relates to the technical field of membranes, in particular to a photocatalytic self-cleaning BiOCl / COF composite membrane as well as a preparation method and application thereof. BiOCl nanosheets and COF nanosheets with photocatalytic characteristics are synthesized respectively, the two nanosheets are deposited on the surface of a polymer substrate film through a vacuum filtration technology, and due to the fact that a large number of oxygen-containing groups in the COF nanosheets improve the dispersity of the bismuth oxychloride nanosheets through hydrogen-bond interaction, disordered stacking of BiOCl in the stacking process is reduced, and the photocatalytic performance of the BiOCl nanosheets is improved. The COF is added to assist the bismuth oxychloride nanosheets in forming an interlayer channel with a screening effect, and the two nanosheets form a heterostructure, so that the photocatalytic capability of the composite film is enhanced. The preparation method of the composite membrane is simple, and the composite membrane has good permeability to Evans blue, Congo red, rhodamine B and other dyes, has excellent photocatalytic self-cleaning ability, and can be applied to separation of organic wastewater generated in the printing and dyeing industry.

The invention relates to the technical field of functional polymer materials and environmental pollution control, in particular to hydrogen bond self-assembled bio-based aerogel as well as a preparation method and application thereof. Quaternized chitosan and tannic acid are self-assembled in a water phase through hydrogen bonds and electrostatic interaction to form a three-dimensional network structure, no cross-linking agent or organic solvent is added, the specific surface area of the bio-based aerogel BET is 2-10 m / g, and through the strong electrostatic adsorption effect between cationic groups in the quaternized chitosan and anionic dye molecules (such as Congo red), the cationic groups in the quaternized chitosan and the anionic dye molecules (such as Congo red) are separated from the anionic dye molecules. The material shows excellent dye removal efficiency and adsorption capacity under the conditions of normal temperature and normal pressure and hydrogen bonds provided by rich phenolic hydroxyl groups in tannic acid molecules and a pi-pi accumulation effect, the aerogel can quickly adsorb anionic dye, the adsorption process is efficient, the selectivity is high, the structure is stable, and the aerogel is degradable and can be applied to the field of dye adsorption. And the method has good reproducibility and repeated use stability, and has wide practical application and popularization prospects.

The invention provides a Zn-MOF material, a preparation method thereof and application of the Zn-MOF material in Congo red dye adsorption, and relates to the technical field of metal organic framework materials. The preparation method provided by the invention comprises the following steps: reacting 2-methylimidazole with 3, 6-dichloropyridazine in an alkaline solvent environment to generate 3, 6-bis (2-methylimidazole) pyridazine; the preparation method comprises the following steps: mixing and coordinating 3, 6-bis (2-methylimidazole) pyridazine, isophthalic acid and a zinc source to prepare a Zn-MOF material; the Zn-MOF material prepared by the preparation method disclosed by the invention can be used for effectively adsorbing Congo red.

The invention discloses low-temperature salt-tolerant and alkali-tolerant streptomyces microflavus and application thereof, relates to the technical field of microorganisms, and is characterized in that the preservation number of the streptomyces microflavus is CCTCC (China Center for Type Culture Collection) M2023664. The streptomyces microflavus provided by the invention can well grow at the temperature of 10-30 DEG C. In a Congo red decoloration test, the ratio of the diameter (D) of a transparent circle to the diameter (d) of a bacterial colony is 3.6. The strain is applied to degradation of cellulose, has the advantages of degradation of cellulose at low temperature, high cellulase activity, salt resistance, alkali resistance and the like, and can be particularly used for cellulose degradation strain resources in low-temperature saline-alkali areas.

The invention discloses a fluorescence-colorimetric bimodal nanoprobe and a biosensor for amikacin sulfate detection, and relates to the technical field of drug safety and environmental hazard detection, the fluorescence-colorimetric bimodal nanoprobe comprises up-conversion nanoparticles and Congo red; the UCNPs is prepared by taking rare earth chloride, oleic acid, 1-octadecene, ammonium fluoride and sodium hydroxide as raw materials through a solvothermal method. According to the invention, a fluorescence method and a colorimetric method are innovatively combined, and the fluorescence-colorimetric bimodal nano probe is designed and is used for real-time analysis and visual detection of AMK; the near-infrared excitation characteristic and the stable chemical property of UCNPs are utilized, background fluorescence interference is reduced, the AMK detection sensitivity, accuracy and anti-interference capacity are remarkably improved, and the method can be applied to AMK detection in actual samples.

The invention discloses a preparation method and application of a red fluorescent copper nano-cluster. According to the preparation method, a red fluorescent copper nano-cluster aqueous solution is prepared at room temperature by using polyvinylpyrrolidone as a protective agent, 3-mercaptophenylboronic acid as a stabilizer and a reducing agent and water-soluble copper salt as a copper source. The preparation method has the advantages of being simple in preparation process, low in instrument requirement, short in treatment time, low in cost and the like, the fluorescence quantum yield of the prepared red fluorescent copper nano-cluster is 4.9%, and the prepared red fluorescent copper nano-cluster has the advantages of being good in water solubility, good in stability, high in photobleaching resistance, high in salt resistance, long in fluorescence service life and the like, has high sensitivity and selectivity to Congo red, and is suitable for industrial production. The method can be applied to detection of fluorescence quenching type Congo red.

The present invention relates to the technical field of sewage treatment, and discloses a preparation method of a porous adsorption resin and its application in sewage treatment. In the present invention, a quaternization cross-linking reaction occurs between the tertiary amine groups of bis(2-hydroxy-5-chloromethylbenzaldehyde Schiff base)-based polyethylene glycol and a polyacrylonitrile resin, and the polyacrylonitrile-based porous adsorption resin with a three-dimensional porous structure is cross-linked. It has a larger specific surface area and more adsorption sites. At the same time, it contains a large number of o-hydroxy Schiff base structures and hydroxyl groups, has a strong coordination effect and complexation adsorption performance for lead ions, and contains quaternary ammonium salt cations and hydroxyl groups, which form electrostatic attraction and hydrogen bond interactions with congo red, improving the adsorption performance of the polyacrylonitrile resin for dyes such as congo red.

This invention provides a composite aerogel based on Eucommia ulmoides gum and MXene nanosheets, its preparation method, and its application. The aerogel is prepared by reacting a toluene solution of Eucommia ulmoides gum with Ti3C2T... x MXene aqueous solution was mixed and a water-in-oil microemulsion was formed using a combination of ultrasound-assisted shaking. This allowed MXene nanosheets to self-assemble at the microemulsion droplet interface. Following vertical freezing and freeze-drying processes, a three-dimensional network structure of Eucommia ulmoides gum-Ti3C2T was successfully constructed. x MXene composite aerogel. The preparation method of this invention is mild and requires no chemical cross-linking agents. The resulting composite aerogel exhibits excellent adsorption performance for enrofloxacin, malachite green, Congo red, rhodamine, and kanamycin in water, with adsorption equilibrium times all within 10 minutes, enabling rapid removal of organic pollutants from water. This invention provides a new approach for the high-value utilization of Eucommia ulmoides gum and has promising application prospects in the field of water environment remediation.

The invention relates to the technical field of dye separation, and discloses a loose nanofiltration membrane and a preparation method and application thereof, the loose nanofiltration membrane comprises a porous support membrane, and a polyesteramide separation layer formed on the porous support membrane through one-step interfacial polymerization of nucleoside monomers and multi-acyl chloride monomers. The nucleoside monomer is one or more than two of adenosine, guanosine and cytidine nucleoside. The nucleoside monomer with a long-chain structure, a branched-chain structure, a rigid twisted structure and a plurality of hydrophilic reaction sites is selected as an interfacial polymerization water-phase monomer, so that the loose nanofiltration membrane is endowed with excellent permeation and separation performance. The membrane has a high rejection rate on dye molecules such as Congo red and methyl blue, also has high water permeability and extremely high dye / inorganic salt separation selectivity, and shows good application potential in the aspects of dye production and purification and dye wastewater recovery.

The invention belongs to the field of water purification and water recovery, and particularly relates to a biological geopolymer carbonized membrane which is prepared from bagasse powder and a geopolymer, and the biological geopolymer carbonized membrane comprises the following components in percentage by mass: 0.5-3% of bagasse, 0.1-2% of hydrogen peroxide, 0.01-0.06% of lauryl sodium sulfate, 20-27% of slag and the balance of water. The content of the metakaolin is 20%-27%, and the content of the water glass is 41%-46%. The invention also discloses a preparation method of the biological geopolymer diaphragm, which comprises the following specific steps: adding bagasse powder into a geopolymer raw material, uniformly mixing, curing at constant temperature, demolding, grinding and calcining to obtain the bagasse / geopolymer composite carbonized diaphragm. The invention also discloses an application of the biological polymer carbonized membrane in Congo red sewage and seawater desalination. The biological texture polymer carbonized membrane has the capacity of efficiently removing Congo red dye liquor and the capacity of interface evaporation, and application of the biological texture polymer carbonized membrane in multiple fields is achieved.

The invention discloses a preparation method and application of an organic acid and polyethylene glycol modified sodium-based beta-cyclodextrin metal organic framework, and belongs to the technical field of metal organic framework materials (MOF). The method comprises the following steps: firstly, preparing a Na-beta-CD-MOF (Na-beta-CD-MOF) by utilizing a methanol steam diffusion method or an ultrasonic-assisted synthesis method, and then carrying out crosslinking modification on the Na-beta-CD-MOF, organic acid (such as dibasic acid or tribasic acid as citric acid and malic acid) and polyethylene glycol (the molecular weight is 200-50000); the water stability, the pore structure and the adsorption performance on antibiotics and dye pollutants are obviously improved. The prepared organic acid and polyethylene glycol modified sodium-based beta-cyclodextrin metal organic framework has good biocompatibility and chemical stability, more adsorption sites are introduced, and pollutants such as ciprofloxacin hydrochloride, tetracycline hydrochloride and Congo red in wastewater can be efficiently removed. The method is green, environment-friendly, low in cost and simple and convenient to operate, and has a wide industrial application prospect.

The invention relates to the technical field of adsorbents, and discloses a preparation method and application of a sunflower stem pith foam adsorption material.The preparation method comprises the steps that microfibrillated cellulose, quaternized chitosan and sunflower stem pith powder are put into a beaker to be mixed, a cross-linking agent is added, and stirring cross-linking is conducted; and then cryopreserving and thawing to prepare the composite sunflower stem pith foam adsorption material with the dispersed sunflower stem pith powder wrapped by the chitosan. Chitosan is used as a support to support and disperse sunflower stem pith powder, so that sunflower stem pith agglomeration is avoided, and active adsorption sites are increased. The adsorption capacity of the sunflower stem pith foam adsorption material prepared by the method is greatly increased, the adsorption capacity of Congo red is 9 times that of uncompounded sunflower stem pith, the performance is greatly improved, and the sunflower stem pith foam adsorption material can be applied to adsorption of hydrophobic and anionic azo dyes and has a good application prospect. The adsorbent has the advantages of low cost, simplicity in preparation, no chemical pollution, reproducibility, excellent adsorption performance and the like.

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.

The application discloses a peroxidase and application thereof, and relates to the field of bioengineering.The peroxidase POD-8 provided by the application has good enzyme activity of oxidizing phenolic substrates, especially the highest enzyme activity on 2,6-DMP, and has very good persistence, can maintain stable enzyme activity within 10 min, and has relatively strong tolerance to various metal ions, can still maintain more than 90 % of enzyme activity in the presence of various metal ions with various concentrations, has relatively strong decolorizing capacity on various dyes, especially the decolorizing efficiency on Congo red and amino black 10B is as high as about 25 % within 24 h, and has a good application prospect in dye wastewater treatment.

The invention belongs to the technical field of solid ultrasonic catalysis, and particularly relates to an Ag2O / ZnMoO4 composite acoustic catalyst as well as a preparation method and application thereof. According to the Ag2O / ZnMoO4 composite acoustic catalyst, the mass ratios of Ag2O in the Ag2O / ZnMoO4 composite acoustic catalyst are 3%, 5%, 7% and 10% respectively. The Ag2O / ZnMoO4 composite acoustic catalyst provided by the invention has a synergistic effect with potassium persulfate to ultrasonically catalyze and degrade organic dye, the degradation effect is good, equipment is simple, and the method is environment-friendly. By utilizing the method, the degradation rates of methyl orange, Congo red, tetracycline, golden orange II and rose-bengal B in water can reach 89.14%, 88.01%, 76.70%, 54.16% and 94.82% respectively in 5 minutes.

The invention provides a preparation method of a Ce doped BiOCOOH adsorption material. The preparation method is characterized in that Ce is doped in BiOCOOH, so that the specific surface area of the adsorption material can be greatly increased, and the preparation method is simple. The preparation method comprises the following steps: 1) dissolving a certain amount of bismuth nitrate pentahydrate in an ethylene glycol solution, stirring and adding a certain amount of sodium formate to obtain a mixed solution; 2) dissolving a certain amount of cerous nitrate in an ethylene glycol solution to obtain a mixed solution; 3) mixing the mixed solution in the step 1) and the mixed solution in the step 2) to obtain a precursor solution; and 4) placing the precursor solution in a constant-temperature oven, and carrying out high-temperature reaction. And washing and drying the product to obtain the Ce-BiOCOOH composite material. The adsorption material can adsorb 98.1% of Congo red within 5 min and shows a high adsorption rate, and after four adsorption cycle experiments, the adsorption rate of the adsorption material can still be kept at 90% or above, which indicates that the adsorption material has stability and reusability and is a potential excellent adsorption material.

This invention belongs to the field of nanofiltration membrane technology, and particularly relates to a polyamide nanofiltration membrane, its preparation method, and its application. The polyamide nanofiltration membrane provided by this invention includes an ultrafiltration membrane and a polyamide selective layer attached to the ultrafiltration membrane. The polyamide selective layer is formed by a polycondensation reaction of a fully amino columnar aromatic hydrocarbon [5] and 1,3,5-benzenetricarboxyl chloride. The polyamide nanofiltration membrane of this invention can separate organic micropollutants such as Congo red, Rhodamine B, methylene blue, and methyl orange dyes, with a rejection rate of more than 95%. It also has good separation performance for some inorganic salts, with a rejection rate of more than 50%. The polyamide nanofiltration membrane of this invention can adapt to some harsh acid and alkali environments while maintaining excellent rejection performance. The polyamide nanofiltration membrane provided by this invention also has excellent antifouling performance.

A kind of jamesonite and marmatite flotation separation method, comprising the following steps: (1) the lead-zinc ore containing jamesonite and marmatite is ground, so that the content of-74 microns is 80-90%, to obtain the concentration of 30-40% flotation slurry;(2) put Congo red dye into stirring barrel to make 5% mass concentration solution;(3) add 300-1200g / t Congo red dye to neutral pH slurry, and react with slurry for 5min, then add ethion and frother, after pulp conditioning, carry out flotation to obtain lead rough concentrate;(4) carry out cleaning operation on lead rough concentrate, only add Congo red dye in cleaning, and the amount of reagent is 50% of the previous operation.Middlings are returned to the previous operation in turn.The present application uses Congo red dye as depressor, which has good selectivity to marmatite, and can realize efficient separation of jamesonite and marmatite at neutral pH.

The invention discloses a color developing card capable of detecting the oxidation degree of cold-pressed or hot-pressed carya illinoensis oil, and belongs to the technical field of biology, the color developing card utilizes the principle that aldehyde components volatilized by the carya illinoensis oil react with hydroxylamine sulfate to change the pH so as to change the color of Congo red, the color of the carya illinoensis oil can be detected according to the color of the color developing card, and the degree of oxidation of the carya illinoensis oil can be detected. Whether the peroxide value level exceeds the national standard or not is judged; the color developing card takes filter paper as a substrate material, so that the cost is low; the preparation method of the color developing card is simple and effective, and is convenient for large-scale production; the color developing card is portable and easy to operate, and is beneficial to quality control of carya illinoensis oil products in the storage and transportation process; common consumers without professional detection capability or non-technicians in the field can also judge the oxidation condition of the cold-pressed or hot-pressed carya illinoensis oil through the color developing card.

The invention relates to the technical field of silicon dioxide, and discloses a preparation method of a surface-modified silicon dioxide adsorbent. The preparation method comprises the following steps: adding water and sodium sulfonate-modified silicon dioxide into a flask, stirring, adding a polyquaternary ammonium salt modifier, stirring, filtering, washing, and drying to obtain the surface-modified silicon dioxide adsorbent. The invention uses anion and cation electrostatic self-assembly to modify the polyquaternary ammonium salt modifier onto the surface of nano silicon dioxide, thereby introducing a large amount of quaternary ammonium salt cationic groups onto the surface of nano silicon dioxide, having a strong electrostatic interaction with anionic dye pollutants such as methyl orange, Congo red, and sunset yellow, and exhibiting excellent adsorption performance and removal efficiency. The invention has good practical application in the treatment of wastewater containing dye pollutants.

The invention discloses a preparation method of a special olfactory visual indicator card for monitoring the deterioration degree of rice, and the preparation method comprises the following steps: (1) weighing carboxymethyl cellulose, and stirring for dissolving; and (2) adding Congo red CR and hydroxylamine sulfate, stirring, and drying in an oven to obtain CMC-CR. (3) weighing chitosan, dissolving chitosan in acetic acid, stirring for 1 hour, adding glycerol, and continuously stirring for 30 minutes to obtain a chitosan solution; and (4) soaking the prepared CMC-CR in a chitosan solution, uniformly coating, and drying in an oven to obtain the CS / CMC-CR indicator card. The invention relates to the technical field of food detection. The preparation method of the special olfactory visual indicator card for monitoring the rice deterioration degree is simple and safe, can be used for large-scale production, and has the advantage of degradability. The method has significant responsiveness to the main volatile substance hexanal generated by rice deterioration, eliminates the interference of other volatile flavor substances on the responsiveness, and provides a new thought for the fields of rice packaging, intelligent detection and the like.

The application provides a Zn-MOF material and a preparation method and application thereof in Congo red dye adsorption, and relates to the technical field of metal organic framework materials.The preparation method comprises the following steps: 2-methyl imidazole is reacted with 3,6-dichloropyridazine to generate 3,6-bis(2-methyl imidazole) pyridazine in an alkaline solvent environment; and the Zn-MOF material is prepared by mixing and coordinating 3,6-bis(2-methyl imidazole) pyridazine, isophthalic acid and a zinc source.The Zn-MOF material prepared by the application can effectively adsorb Congo red.

The invention provides a preparation method of a phosphotungstic acid / silicon dioxide catalyst with a Janus structure and application of the phosphotungstic acid / silicon dioxide catalyst in a heterogeneous oxidation reaction. The catalyst takes silicon dioxide as a carrier, phosphotungstic acid is loaded on the surface, and an n-octane-anhydrous acetonitrile emulsion system can be effectively stabilized. The catalyst shows efficient catalytic activity in oxidative desulfurization and dye degradation reactions, can promote oxidative removal of dibenzothiophene and degradation of Congo red dye, is suitable for a complex heterogeneous reaction system in the thickened oil recovery and processing process, and has wide industrial application prospects.

The present invention relates to the technical field of environmental materials, specifically a floating bead / polydopamine / chitosan composite adsorption material and a preparation method and application thereof, wherein the floating bead / polydopamine / chitosan composite adsorption material has a particle size of 3 mm-10 mm, an adsorption capacity of 52 mg / g-64 mg / g for microplastics, and an adsorption capacity of 86 mg / g-98 mg / g for Congo red dye. Before the material is solidified, the viscous intermediate is precooled and freeze-dried, so that the prepared composite adsorption material has a layered structure feature, significantly improves the specific surface area, and makes the composite adsorption material have good adsorption performance. At the same time, by magnetizing the floating beads, the composite adsorption material can be recycled by magnetic separation, which greatly improves the recycling convenience of the composite adsorption material.

The invention discloses a Cu-based metal organic framework material as well as a preparation method and application thereof. The Cu-based metal organic framework material disclosed by the invention is Cu-1 or Cu-2, wherein the chemical formula of the Cu-based metal organic framework material is [Cu (DIN) (BTC) (H2O) 2]. (H2O) 2; the chemical formula of Cu-2 is [Cu2 (BTC) 2 (DIN) 2]. (DMA) 2 (H2O), DIN represents 1, 4-bis (imidazole-1-yl) naphthalene, and the molecular formula of the 1, 4-bis (imidazole-1-yl) naphthalene is C16H12N4; bTC represents 1, 3, 5-benzene tricarboxylic acid, and the molecular formula of BTC is C9H6O6; dMA represents N, N-dimethylacetamide, and the molecular formula of DMA is C4H9NO. The Cu-1 material and the Cu-2 material have remarkable antibacterial effects on Escherichia coli under a dark condition and an illumination condition, and the antibacterial effect under the illumination condition is 50% or above higher than that under the dark condition. According to the present invention, the Cu-2 with the more significant effect on the Escherichia coli further has the strong inhibition activity on the pectobacterium carotovorum and the Xanthomonas oryzae, and the Cu-2 provides the significant adsorption and degradation effects on the Congo red pollutant, such that the Cu-2 can provide the significant adsorption and degradation effects on the Congo red,

The application relates to a carboxylate-regulated rod-shaped magnesium oxide adsorption material and a preparation method and application thereof, and belongs to the field of environmental functional materials and water treatment technologies.In the preparation of the magnesium oxide, carboxylate is introduced in a carbonization process with the participation of CO2, the coordination of the carboxylate to Mg 2+ and the regulation of the carboxylate to the interface energy of the crystal are utilized, the traditional carbonization reaction path is changed, the anhydrous magnesium carbonate is changed from disordered nucleation growth to directional growth, the rod-shaped precursor structure with a certain length-diameter ratio is formed, and then calcination is carried out, so that the MgO material with a porous rod-shaped structure is obtained.The rod-shaped magnesium oxide adsorption material prepared by the application can still exhibit excellent selective adsorption capacity and high adsorption capacity for Congo red and other anionic dyes in a complex water system containing a large number of competitive anions, so that the application performance and the application range of the material in actual industrial wastewater treatment are significantly improved.