A method for preparing an ordered cross-stacked metal oxide nanowire array is provided. The method includes the following steps: conducting synthesis by using an amphiphilic diblock copolymer as a structure directing agent, tetrahydrofuran (THF) as a solvent and polyoxometalates (POMs) as an inorganic precursor, where the diblock copolymer can interact with POMs via an electrostatic force to form a core-shell cylindrical micelle in the solvent, which self-assembles to form an ordered multilayer-crossed organic-inorganic composite nanostructure during an evaporation process; the template is removed by calcination in air, thereby obtaining ordered and crossed metal oxide nanowires with various elements doping. The nanowire array material has a high specific surface area, a high crystallinity, and realizes uniform doping of heteroatoms.

To provide a method for recovering a molybdenum compound that can obtain molybdenum oxide powder having a high purity and a large specific surface area from a molybdenum component-containing solution. The method including: precipitating, in a molybdenum component-containing solution, a molybdate represented by A.sub.xMo.sub.yO.sub.3y+z (1) (in the formula (1), A represents an element selected from Group 4, Group 8, Group 12, Group 13, and Group 14; 3y+z represents the number of oxygen atoms contained in the molybdate; and z represents the number of the valence number of Ax); firing including producing an oxide represented by AO.sub.z (2) (in the formula (2), A is the same as A in the formula (1); and z represents the number of oxygen atoms that combine with A in the formula (2) to produce an oxide) and producing vapor containing molybdenum trioxide, by thermally decomposing the molybdate; cooling; and recovering.

To provide a method for recovering a molybdenum compound that can obtain molybdenum oxide powder having a high purity and a large specific surface area from a molybdenum component-containing solution. The method including: precipitating, in a molybdenum component-containing solution, a molybdate represented by A.sub.xMo.sub.yO.sub.3y+z (1) (in the formula (1), A represents an element selected from Group 4, Group 8, Group 12, Group 13, and Group 14; 3y+z represents the number of oxygen atoms contained in the molybdate; and z represents the number of the valence number of Ax); firing including producing an oxide represented by AO.sub.z (2) (in the formula (2), A is the same as A in the formula (1); and z represents the number of oxygen atoms that combine with A in the formula (2) to produce an oxide) and producing vapor containing molybdenum trioxide, by thermally decomposing the molybdate; cooling; and recovering.

A production device, method and application of nano-sized zinc molybdate. The device includes a double-cone mixer; an elevator is obliquely provided at a bottom of a discharge port of the double-cone mixer; a rear end of the elevator is located above a feeder; the feeder is connected to one end of an electric heating converter, an other end of the electric heating converter is connected to a finished product bin; a top of the finished product bin is provided with an atomizing nozzle for adding nanomaterial dispersant; the atomizing nozzle is connected to a syringe pump by pipeline. High-purity nano-sized molybdenum trioxide and nano-sized zinc oxide are adopted to synthesize nano-sized zinc molybdate in an electric heating converter. The nano-sized zinc molybdate prepared by the device and method can be used for treatment of African swine fever virus, coronavirus, and AIDS phase I, Ebola, dengue fever, polio viruses.

A production device, method and application of nano-sized zinc molybdate. The device includes a double-cone mixer; an elevator is obliquely provided at a bottom of a discharge port of the double-cone mixer; a rear end of the elevator is located above a feeder; the feeder is connected to one end of an electric heating converter, an other end of the electric heating converter is connected to a finished product bin; a top of the finished product bin is provided with an atomizing nozzle for adding nanomaterial dispersant; the atomizing nozzle is connected to a syringe pump by pipeline. High-purity nano-sized molybdenum trioxide and nano-sized zinc oxide are adopted to synthesize nano-sized zinc molybdate in an electric heating converter. The nano-sized zinc molybdate prepared by the device and method can be used for treatment of African swine fever virus, coronavirus, and AIDS phase I, Ebola, dengue fever, polio viruses.

The invention relates to a class of electrochemical energy storage materials and a preparation method and application thereof. A porous metal oxide-based electrochemical energy storage material at least comprises a host metal oxide with a hierarchical pore structure; wherein, the host metal oxide is a single crystal, quasicrystal, or twin crystal structure with ordered atomic lattice arrangement, the crystal is rich in oxygen atom vacancy defects, the structural general formula is M.sub.xO.sub.y-z, wherein M is selected from one or more combinations of niobium element, molybdenum element, titanium element, vanadium element, manganese element, iron element, cobalt element, nickel element, copper element, zinc element, tungsten element, tantalum element, and zirconium element; and 1x2, 1y5, and 0.1z0.9, preferably Nb.sub.2O.sub.5-z.

A method of preparing remediated MoO.sub.3 from naturally-occurring molybdenum, or molybdenum that is enriched in one, the other or both of Mo-98 and Mo-100 isotopes from a particulate rhenium-containing MoO.sub.3 matrix that contains one, the other or both of those isotopes is disclosed as is the product remediated MoO.sub.3 that contains less than about 1000 ppt rhenium. In accordance with the invention, particulate rhenium-containing MoO.sub.3 matrix is heated in the presence of an oxygen-containing gaseous stream to a temperature of greater than about 300 C. and less than about 800 C. The temperature and oxidative sparging are maintained for a time sufficient to assure that rhenium has been oxidized to rhenium(VII), diffuses to form the dimer (Re.sub.2O.sub.7), and is then vaporizingly removed as Re.sub.2O.sub.7, while retaining the remediated MoO.sub.3.

A method of preparing remediated MoO.sub.3 from naturally-occurring molybdenum, or molybdenum that is enriched in one, the other or both of Mo-98 and Mo-100 isotopes from a particulate rhenium-containing MoO.sub.3 matrix that contains one, the other or both of those isotopes is disclosed as is the product remediated MoO.sub.3 that contains less than about 1000 ppt rhenium. In accordance with the invention, particulate rhenium-containing MoO.sub.3 matrix is heated in the presence of an oxygen-containing gaseous stream to a temperature of greater than about 300 C. and less than about 800 C. The temperature and oxidative sparging are maintained for a time sufficient to assure that rhenium has been oxidized to rhenium(VII), diffuses to form the dimer (Re.sub.2O.sub.7), and is then vaporizingly removed as Re.sub.2O.sub.7, while retaining the remediated MoO.sub.3.

A biconical tungsten (molybdenum) trioxide powder, and a preparation method and use thereof are provided. By adjusting the concentrations of glycerol and oxalic acid, the viscosity of the reaction solution could be adjusted, and then the growth of a (001) crystal plane and a (110) crystal plane of the tungsten (molybdenum) trioxide powder could be inhibited; thus, a monodisperse biconical tungsten (molybdenum) trioxide powder could be controllably prepared with a highly exposed (100) crystal plane.

A biconical tungsten (molybdenum) trioxide powder, and a preparation method and use thereof are provided. By adjusting the concentrations of glycerol and oxalic acid, the viscosity of the reaction solution could be adjusted, and then the growth of a (001) crystal plane and a (110) crystal plane of the tungsten (molybdenum) trioxide powder could be inhibited; thus, a monodisperse biconical tungsten (molybdenum) trioxide powder could be controllably prepared with a highly exposed (100) crystal plane.