9 results about "Norfloxacin" patented technology

A method for preparing and applying copper chloride-modified vinegar residue biochar, belonging to the field of wastewater treatment technology, is disclosed. The method involves: weighing 1.0000 g ± 0.0005 g of vinegar residue powder and adding it to 40 mL of ultrapure water, dispersing it thoroughly under magnetic stirring; then adding 0.5000 g of CuCl₂·2H₂O, mixing, and continuously stirring magnetically at room temperature for 24 h to allow the CuCl₂ to form a biochar. 2+ The mixture is thoroughly impregnated with vinegar residue to form a mixture. The mixture is then dried in an oven and transferred to a tube furnace. Inside the tube furnace, under a N₂ atmosphere, the temperature is increased to 600°C at 8°C / min and pyrolyzed for 120 min. After cooling, the product is removed, ground, and then copper chloride-modified vinegar residue biochar is obtained. This invention features a simple process flow, controllable operating conditions, low equipment requirements, good repeatability, and suitability for large-scale preparation. The obtained copper chloride-modified vinegar residue biochar exhibits excellent adsorption and degradation performance of organic pollutants, particularly efficient degradation and removal of quinolone antibiotics such as ciprofloxacin and norfloxacin.

The invention discloses a method for synthesizing a ZnFe2O4 photocatalyst based on ferromagnetic resonance absorption effect mediation. The synthesis method comprises the following steps: dissolving Zn (NO3) 2.3 H2O and Fe (NO3) 3.9 H2O in deionized water, and stirring to obtain a mixed solution; adding a NaOH solution to adjust the pH value; continuously heating and stirring, filtering after low-power short-time microwave heating, washing with water until the pH value of supernate is 7, and naturally drying; and continuously calcining the dried product, and then carrying out low-power short-time microwave heating to obtain the ZnFe2O4 photocatalyst with the specific surface area of 49.3-50.6 m < 2 > / g, the visible light absorption range of 580 nm and the saturation magnetization of 46.5-47.33 emu / g. The obtained photocatalyst is large in specific surface area, high in visible light absorption capacity, low in photogenerated charge recombination efficiency, easy to separate and recycle, high in photocatalytic capacity and capable of effectively removing norfloxacin in wastewater.

This invention relates to the field of photocatalysis technology, and more particularly to a Haematococcus pluvialis / CdS composite material, its preparation method, and its applications. The Haematococcus pluvialis / CdS composite material provided by this invention comprises Haematococcus pluvialis and nano-CdS coated on the surface of the Haematococcus pluvialis; the mass content of astaxanthin in the Haematococcus pluvialis is 1-10%. Haematococcus pluvialis contains astaxanthin, which can enhance the ability of CdS to capture photons within the visible light wavelength range, thus acting as a dye sensitizer, while simultaneously inhibiting the recombination of photogenerated electrons / holes and improving the transport and transfer efficiency of photogenerated electrons. Therefore, compared with CdS alone, the Haematococcus pluvialis / CdS composite material exhibits better visible light photocatalytic activity. Results show that the Haematococcus pluvialis / CdS composite material has good visible light photocatalytic performance, achieving a removal rate of 84.5% for the recalcitrant norfloxacin within 60 min, and exhibits good cycling stability.

The invention provides a layered double hydroxide modified cyano carbon nitride composite material, a preparation method and a water pollution treatment method. According to the invention, cyano carbon nitride and iron-nickel layered double hydroxide are compounded by a one-step hydrothermal method to construct a heterostructure with piezoelectric response and visible light response; in addition, the cyano carbon nitride has a nanosheet morphology, and the iron-nickel layered double hydroxide has a nanoflower morphology. Under the combined action of ultrasonic waves and visible light, the composite material disclosed by the invention shows excellent degradation performance on norfloxacin and other low-ionization-potential pollutants in sewage, and the degradation rate constants of the composite material respectively reach 2.76 times of that of single CCN and 8.3 times of that of single Fe-Ni LDH. The method disclosed by the invention is simple and convenient in process, low in cost, high in adaptability and suitable for efficiently removing various water pollutants, and has a good application prospect in the aspect of water pollution treatment.

The application discloses a method for degrading organic pollutants by using cobalt ion activated persulfate with reinforced waste eggshells, and belongs to the technical field of environmental functional materials and waste resource utilization. The method comprises the following steps: mixing waste eggshell powder and a cobalt ion solution in water, stirring, and carrying out in-situ complexation; adding organic pollutants to the mixed solution after complexation, and then adding per monosulfate to degrade the organic pollutants. The application utilizes the synergistic effect of the natural alkaline microenvironment spontaneously formed by the waste eggshells in the aqueous solution and the homogeneous cobalt ions, fixes the cobalt ions to avoid secondary pollution, promotes the reduction of Co 3+ to Co 2+ by the alkaline microenvironment, and has excellent degradation effect on a plurality of organic pollutants such as norfloxacin and rhodamine B, has extremely strong practical water treatment application potential and broad spectrum applicability.

This invention discloses a hydrophilic Fe-Vo-titanium dioxide-PES self-cleaning composite membrane based on in-situ blending, its preparation method, and its application, comprising the following steps: firstly, titanate nanotubes are prepared by hydrothermal method, and then anatase phase titanium dioxide (Vo-TiO2) containing bulk oxygen vacancies is obtained by high-temperature calcination. 2 Furthermore, Fe-modified titanium dioxide powder containing oxygen vacancies (Fe-Vo-TiO) was prepared using a simple impregnation method. 2 Hydrophilic Fe-Vo-TiO₂ was prepared using the phase inversion method. 2 -PES composite membrane. Tests on pure water flux, bovine serum albumin (BSA) rejection rate, and water contact angle demonstrated that the optimal membrane is Fe-Vo-TiO₂. 2 -PES-0.04 exhibits optimal hydrophilicity with a water flux of 222.6 L·m. ‑2 ·h ‑1 The BSA rejection rate reached 93%. Through photocatalytic-Fenton dynamic filtration degradation experiments of norfloxacin (NOR), the results showed that the prepared composite membrane achieved a NOR removal efficiency of 80%, and still maintained 75% after 8 cycles, demonstrating the excellent cycle stability of the composite membrane and solving the problems of difficult recovery of powdered catalysts and easy loss of active components.

The invention discloses application of nerol as a quinolone antibiotic synergist in preparation of antibacterial infection drugs, and belongs to the technical field of antibiotic synergists. According to the invention, a natural monoterpene alcohol, namely nerol (Nerol), is adopted as a quinolone antibiotic synergist. The nerol can inhibit the efflux pump activity of methicillin-resistant staphylococcus aureus and recover the sensitivity of methicillin-resistant staphylococcus aureus to quinolone antibiotics, the nerol is combined with ciprofloxacin, norfloxacin or clinafloxacin for use, the nerol has a partial synergistic effect on methicillin-resistant staphylococcus aureus MRSA 95 strains, and the survival rate of mice infected with the methicillin-resistant staphylococcus aureus MRSA 95 strains can be remarkably improved. The invention provides a safe and effective new strategy for overcoming the drug resistance of quinolone antibiotics.

The invention relates to the technical field of photocatalytic materials, in particular to recoverable aerogel and a preparation method and application thereof.The preparation method comprises the following specific steps that a zinc-titanium precursor solution is prepared, then a magnetic nano-material dispersion liquid is prepared, then the magnetic nano-material dispersion liquid is added into the zinc-titanium precursor solution to prepare wet gel, and finally drying and heat treatment are conducted to obtain the recoverable aerogel. The magnetic recoverable aerogel is obtained. The prepared aerogel is high in specific surface area, the adsorption and catalytic activity is enhanced by an excellent structure with rich gaps, the carrier separation efficiency is improved by the II-type heterojunction, and the material is conveniently recycled by the magnetic component. Under the irradiation of visible light, the photocatalyst has excellent photocatalytic degradation performance on antibiotics and dye pollutants such as norfloxacin, tetracycline, rhodamine B and methyl orange, and the degradation rate can reach 99.9% or above; after being magnetically recovered and recycled for 100 times, the degradation rate is still kept to be 98% or above, the material recovery rate exceeds 99.5%, and the material has a wide application prospect in the field of water body pollution treatment.