Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

2156 results about "Iron oxide" patented technology

Iron oxides are chemical compounds composed of iron and oxygen. There are sixteen known iron oxides and oxyhydroxides, the best known of which is rust, a form of iron(III) oxide. Iron oxides and oxyhydroxides are widespread in nature and play an important role in many geological and biological processes. They are used as iron ores, pigments, catalysts, and in thermite, and occur in hemoglobin. Iron oxides are inexpensive and durable pigments in paints, coatings and colored concretes. Colors commonly available are in the "earthy" end of the yellow/orange/red/brown/black range. When used as a food coloring, it has E number E172.

Preparation method of hollow mesoporous silica nanoparticle

The invention relates to a preparation method of a hollow mesoporous silica nanoparticle. The preparation method comprises the following steps: obtaining a polymer-silica composite nanoparticle having a core-shell structure by adopting spherical aggregations of an amphiphilic segmented copolymer in an aqueous solution and a cationic surfactant hexadecyl trimethyl ammonium bromide as double templates and ethyl orthosilicate as a silicon source and by hydrolyzing the silicon source under an alkaline condition; and calcining to remove the templates to obtain the hollow mesoporous silica nanoparticle. The preparation method has the advantages of simplicity, mild reaction condition, and cheap experiment raw materials, and the prepared mesoporous silica nanoparticle has the advantages of high specific surface area, high pore volume, and good biological compatibility. The hollow structure enables the drug loading amount to be substantially improved, nanometer gold, nanometer silver, magnetic iron oxide particles, quantum dots, a contrast agent and the like to be loaded, so the hollow mesoporous silica nanoparticle can be used as a targeting drug release carrier, can be used for magnetic resonance image analysis, and has good application prospects in the fields of the diagnosis and the treatment of cancers.
Owner:DONGHUA UNIV

Composite passivant for soil polluted by heavy metal and preparation method

The invention discloses a composite passivant for soil polluted by heavy metal and a preparation method thereof. The composite passivant is prepared by three raw materials of power plant slags, sepiolite mineral powder and calcined lime in proportion. The preparation method comprises the following steps: A. preparing the power plant slags; B. preparing the sepiolite mineral powder preparation; and C. evenly mixing the raw materials prepared by steps A and B with the calcined lime, wherein the mixture is the composite passivant. By utilizing the composite passivant, the contents of the effective constituents, such as silicon oxide, magnesium oxide, calcium oxide, ferric oxide and the like lowering the soil heavy metal activity is 78.2-90.6% which is calculated by the sum of SiO2, MgO, CaO, MnO2 and Fe2O3; the composite passivant can be widely used in various soils polluted by the heavy metal, especially the soil with visco-weight texture; and by using the composite passivant, the contents of cadmium and lead in a soil active state in the pollutant farmland are lowered by 15.9-48.4% and 26.2-56.4% respectively; the contents of the cadmium and the lead of agricultural products are lowered by 13.6-43.9% and 22.1-53.2% respectively; and the soil pH value is also improved by 0.21-0.46%. The composite passivant has various functions of passivating soil heavy metal, repairing acidification soil and improving the soil tilth and the like.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI

Loaded binary composite metal oxide catalytic ozonation catalyst and preparation method thereof

The invention belongs to the field of catalysts and discloses a loaded binary composite metal oxide catalytic ozonation catalyst with gamma-Al2O3 microspheres as carriers and manganese oxide and ferric oxide as active components and a preparation method thereof. The preparation method of the loaded binary composite metal oxide catalytic ozonation catalyst comprises dipping gamma-Al2O3 microspheres in a mixed solution containing water-soluble manganese salt and water-soluble ferric salt, taking out the gamma-Al2O3 microspheres, carrying out drying and carrying out high temperature roasting to obtain the loaded binary composite metal oxide catalytic ozonation catalyst. The loaded binary composite metal oxide catalytic ozonation catalyst has significantly improved particle uniformity, good stability, good reusability and excellent catalytic activity. Compared with gamma-Al2O3 microsphere or manganese and iron single component-loaded catalysts, the loaded binary composite metal oxide catalytic ozonation catalyst significantly improves an organic removal rate by at most 38%, greatly reduces paper-making wastewater organic pollutant types and content and fully degrades difficultly biodegraded organics.
Owner:SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products