摘要:
The present invention relates to a method for preparing an aqueous or hydro-alcoholic colloidal solution of metal chalcogenide amorphous nanoparticles notably of the Cu2ZnSnS4 (CZTS) type and to the obtained colloidal solution.The present invention also relates to a method for manufacturing a film of large-grain crystallized semi-conducting metal chalcogenide film notably of CZTS obtained from an aqueous or hydro-alcoholic colloidal solution according to the invention, said film being useful as an absorption layer deposited on a substrate applied in a solid photovoltaic device.
摘要:
A perovskite titanium-containing composite oxide particle has a composition represented by general formula (I), wherein the specific surface area is about 10 to about 200 m2/g, the specific surface area diameter D1 of the primary particles as defined by formula (II) is about 10 to about 100 nm, and the ratio D2/D1 of the average particle size D2 of the secondary particles to D1 is about 1 to about 10: M(TiO3) (I) (wherein M is at least one of Ca, Sr, Ba, Pb, or Mg) D1=6/ρS (II) (wherein ρ is the density of the particles, and S is the specific surface area of the particles.) The perovskite titanium-containing composite oxide particle of the present invention shows a small particle size and excellent dispersion properties, so that the particle is suitable for the application to functional materials such as a dielectric material and a piezoelectric material, a memory, and a photocatalyst.
摘要:
A perovskite titanium-containing composite oxide particle have a composition represented by general formula (I), where the specific surface area is about 10 to about 200 m2/g, the specific surface area diameter D1 of the primary particles defined by formula (II) is about 10 to about 100 nm, and a D2/D1 ratio of the average particle size D2 of secondary particles to D1 is about 1 to about 10: M(TiO3) (I) wherein M is at least one of Ca, Sr, Ba, Pb, or Mg D1=6/ρS (II) wherein ρ is the density of the particles, and S is the specific surface area of the particles is disclosed. The present invention has a small particle size and excellent dispersion properties, so that the particle is suitable for application to functional materials.
摘要:
A perovskite titanium-containing composite oxide particle having a composition represented by general formula (I), where the specific surface area is about 10 to about 200 m2/g, the specific surface area diameter D1 of primary particles defined by formula (II) is about 10 to about 100 nm, and a D2/D1 ratio of the average particle size D2 of secondary particles to D1 is about 1 to about 10: M(TiO3) (I) wherein M is at least one of Ca, Sr, Ba, Pb, or Mg, D1=6/ρS (II) wherein ρ is the density of the particles, and S is the specific surface area of the particles is disclosed. The present invention has a small particle size and excellent dispersion properties, so that the particle is suitable for application to functional materials.
摘要:
A method of producing a sol of an element selected from the group consisting silicon, aluminum, antimony, chromium, manganese, molybdenum, tin and tungsten comprising electrodialytically transferring alkali metal cations of an aqueous solution of a water soluble alkali metal salt of the oxide of the said element from an anode compartment of an electrolytic cell to a cathode compartment of the electrolytic cell while essentially preventing the migration of the metal oxide into the cathode compartment by positioning a cation permselective membrane between the anode compartment and the cathode compartment while carefully and continuously controlling the pH of the solution and removing the so-produced sol from the anode compartment of the electrolytic cell as well as a novel electrodialytic cell for sol formation.
摘要:
A simple process for preparing metallic oxide coated silica sols and pure metallic oxide sols involves dispersing a metallic chloride and the sol, treating with an anion exchange resin, and recovering the product.
摘要:
THE INVENTION IS TO A METHOD OF PREPARING A METAL OXIDE CLAD SOL OF A HYDROUS OXIDE OF THORIA, URANIA, PLUTONIA, OR MIXTURES THEREOF, BY ADDING A MONOBASIC ACID SALT OF ZIRCONIUM OR TITANIUM TO AN AQUEOUS DISPERSION OF SAID HYDROUS OXIDE AND THEN CONCENTRATING THE SOLUTION AND PASSING IT THROUGH AN ION EXCHANGE MEMBRANE AND RECOVERING THE METAL OXIDE CLAD SOL.
摘要:
LOW-NITRATE PLUTONIA SOLS HAVING A NO3/PU MOLE RATIO IN THE RANGE 0.1 TO 0.4 WITH AVERAGE CRYSTALLITE DIAMETERS OF 30 TO 80 A. CAN BE PRODUCED WHEN A SOL IS PREPARED BY SOLVENT EXTRACTION OF A PLUTONIUM NITRATE SEEDED WITH A PLUTONIA SOL. WHEN THE SEEDED SOL IS TAKEN TO DRYNESS AND HEATED FOR 10 TO 120 MINUTES AT A TEMPERATURE IN THE RANGE 190-230* C., NITRATE REMOVAL OCCURS WITH CONCOMITANT CRYSTALLITE GROWTH.
摘要:
THE PRESENT INVENTION RELATES TO A METHOD FOR FORMING A STATIC AND DYNAMICALLY STABILIZED MIXED SOL OF PLUTONIA AND URANIA WHERE THE PLUTONIUM AND URANIUM ARE PRIMARILY IN THE +4 OXIDATION STATE AND WHERE THE SOLS ARE DERIVED FROM SOLVENT EXTRACTION OF AQUEOUS SOLUTION OF URANIUM NITRATE AND PLUTONIUM NITRATE WHICH COMPRISES HEATING THE URANIA SOL COMPONENT AT A TEMPERATURE AND FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE URANIA CRYSTAL LITIES IN THE RANGE 55-100 ANGSTROMS AND THEN EXTRACTING NITRATE ION FROM THE MIXED SOL UNTIL A NITRATE/URANIUM + PLUTONIUM MOLE RATIO OF 0.08 TO 0.25 IS OBTAINED AND TO THE RESULTANT SOL.