8 results about "Congo red" patented technology

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.

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.

The application discloses a dopamine in-situ growth ZIF-8 dye / salt separation loose nanofiltration membrane and a preparation method thereof, and comprises the following steps: preparing a Tris buffer solution by taking a Tris buffer solution as a solvent and an alcohol-water mixed solution; preparing a precursor solution by adding dopamine, polyethyleneimine and a metal ion compound into the buffer solution; depositing the precursor solution on a polysulfone membrane surface; dissolving 2-methylimidazole in the alcohol-water mixed solution and then depositing the 2-methylimidazole on the polysulfone membrane surface; pouring off the excess solution, drying the membrane and then storing the membrane in deionized water to obtain a filter membrane. The nanofiltration membrane prepared by the application can intercept dyes and almost completely pass bivalent inorganic salts, and can fully separate a mixed solution of Congo red, methyl blue and sodium sulfate. Meanwhile, the application is simple in operation, can be popularized to various material substrates, and has great application value and development prospect.

The present application relates to the technical field of Congo red derivative photocatalytic probe application, and particularly relates to a Congo red derivative photocatalytic probe, a preparation method and a use method thereof, comprising a compound I, the compound I is selected from at least one of the Congo red derivative photocatalytic probes, and the Congo red derivative photocatalytic probe comprises two arene, the arene represents an aromatic heterocycle, and the aromatic heterocycle is selected from one of a benzene ring, furan, thiophene and a naphthalene ring. The Congo red derivative photocatalytic probe provided by the present application can specifically label amyloid plaques in AD brain tissue slices, the binding affinity is significantly improved (Kd of Aβ 1‑40 The Congo red derivative photocatalytic probe can reveal the molecular heterogeneity of amyloid deposition and the key regulatory role of the mitochondrial autophagy-lysosome axis, provide a new tool for AD pathological mechanism research, support proteomic analysis and pathological mechanism analysis across brain regions (hippocampus / cortex), and protect the molecular structure and application in the research of neurodegenerative diseases.

This invention discloses a cellulose-based composite bead for activating persulfate to degrade dyes and its preparation method, belonging to the field of water environmental protection. The preparation method includes: 1) preparing rough spherical CuMnO2; 2) preparing a CS-Ca@PEI / CuMnO2 composite bead catalyst; 3) mixing the obtained CS-Ca@PEI / CuMnO2 composite bead catalyst with persulfate and adding it to dye wastewater to degrade the dye wastewater. The catalyst preparation of this invention is simple, uses environmentally friendly biomass as the catalyst carrier, effectively improves the recovery efficiency of powdered catalytic materials, and the synthesized catalyst can efficiently degrade azo dyes, especially Congo red dye.

This invention belongs to the field of adsorbent technology, specifically relating to a covalent organic framework material Tp-ODA COF, its preparation method, and its applications. The Tp-ODA COF is composed of alternating 1,3,5-trialdehyde phloroglucinol and 4,4'-diaminodiphenyl ether linked by imine bonds, forming a periodic repeating unit and a porous network structure with a symmetry of P1. The repeating unit is a two-dimensional layered conjugated framework formed by covalently linking 1,3,5-trialdehyde phloroglucinol and 4,4'-diaminodiphenyl ether through imine bonds. The molecular formula of the repeating unit is C1. 54 H 36 N6O9. The covalent organic framework material Tp-ODA COF of the present invention exhibits efficient and stable adsorption performance for anionic dyes. Under the conditions of 25°C and pH=6, the maximum adsorption capacity for Congo red and methyl orange reaches 1532 mg / g and 1490 mg / g, respectively.

The application provides a rotating hydrothermal method for extracting valuable metals from red mud to prepare functional oxides and construction of composite membranes and application thereof. After Al, Fe and Ti in the red mud are respectively leached, the rotating hydrothermal method is used to prepare gamma-AlOOH, Fe2O3 multi-level hole microspheres and TiO2-I and TiO2-II functional nano oxides, and the prepared gamma-AlOOH, Fe2O3 multi-level hole microspheres and TiO2-I and TiO2-II functional nano oxides are applied to waste water treatment, so that the problem of double pollution of red mud and industrial waste water is solved. The particle size distribution of the prepared gamma-AlOOH, Fe2O3 multi-level hole microspheres and TiO2-I and TiO2-II functional nano oxides is narrower, the morphology is more uniform, the specific surface area is larger, and the abilities of adsorbing organic dyes such as Congo red, adsorbing hexavalent chromium and catalyzing degradation of tetracycline are all significantly improved. The constructed organic-inorganic composite membrane also significantly improves the mechanical, anti-swelling and adsorption properties of the membrane. The preparation method is simple, effective, green and environment-friendly, and realizes the treatment of waste with waste and the transformation of waste into treasure.

This invention relates to the field of water purification and water resource recycling technology, specifically to a biopolymer carbonized membrane, which is made of wheat straw powder and geopolymer. By mass fraction, the wheat straw content is 0.5%-3%, the H2O2 content is 0.1%-2%, and the carbon content is... 12 H 25 The SO4Na content is 0.01%-0.06%, the red mud content is 20%-27%, the metakaolin content is 20%-27%, and the water glass content is 41%-46%. This invention also discloses a method for preparing the aforementioned biopolymer carbonized membrane, mainly including the following steps: uniformly mixing wheat straw powder with geopolymer raw materials, curing at a constant temperature, followed by demolding, surface polishing, and high-temperature calcination to finally obtain a wheat straw / geopolymer composite carbonized membrane. Furthermore, this invention clarifies the application of this membrane in the purification of wastewater containing Congo red dye and seawater desalination. The prepared biopolymer carbonized membrane possesses both highly efficient Congo red dye adsorption performance and good interfacial evaporation performance, enabling multi-purpose use and wide application in various water treatment scenarios.