摘要:
Doped titanium niobate is provided, which has a chemical structure of Ti(1-x)M1xNb2O(7-z)Sz, wherein M1 is Li, Mg, or a combination thereof; 0≤x≤0.15; and 0.0025≤z≤0.075. A battery is provided, which includes a negative electrode; a positive electrode; and an electrolyte disposed between the negative electrode and the positive electrode, wherein the negative electrode includes the doped titanium niobate.
摘要:
A nanostructured material having a coral reef morphology of nanoflake walls is described. The nanostructured material comprises a Fe(II)/Fe(III) layered double hydroxide intercalated with an azo dye, and a synthesis method is discussed. The nanostructured material may be used to remove a contaminant from a solution by adsorption. The nanostructured material may be cleaned and reused with high adsorption efficiency.
摘要:
A method for formation of scorodite and for stabilization of arsenic by formation of scorodite, comprising using sodium hypochlorite as an oxidizing agent. The method comprises producing sodium hypochlorite having a concentration in a range between 1 and 3 w/w % using a diaphragm-less electrolytic cell operating with a sodium salt solution having a salt concentration in a range between 2 and 10 w/w %; diluting a sodium hypochlorite solution to less than 1 w/w % in an arsenic solution at an oxydo reduction potential in a range between 900 and 1100 mV (Pt, AgCl reference) and a pH comprised in range between 0.5 and 2.0; contacting a resulting oxidized arsenic with a ferric salt; and raising the pH to 5.
摘要:
A ferrite composition is provided containing Ba, Co, and Ir and having a Z-type hexaferrite phase and a Y-type hexaferrite phase. The ferrite composition has the formula Ba3Co(2-x)IrxFe(24-2x)O41 where x=0.05-0.20. The composition has equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss factors. The composition is suitable for ultrahigh frequency applications such as high frequency and microwave antennas.
摘要:
A method for splitting carbon dioxide via a two-step metal oxide thermochemical cycle by heating a metal oxide compound selected from an iron oxide material of the general formula AxFe3-xO4, where 0≦x≦1 and A is a metal selected from Mg, Cu, Zn, Ni, Co, and Mn, or a ceria oxide compound of the general formula MaCebOc, where 0
摘要:
Method for preparing soft cubic ferrites of a general formula MFe2O4 comprising the steps of contacting an iron source comprising metallic iron and/or an oxide of Fe(II), Fe(III), Fe(II/III) and a metal oxide of the general formula MxOy, to form a mixture, wherein the initial stoichiometric ratio of M to iron is in the range from greater than zero to about 2, and wherein M is nickel, magnesium, zinc, or a combination thereof; and calcining the mixture at a temperature range of from about 1000° C. to about 1500° C. in a static air atmosphere, to form a soft cubic ferrite of a general formula MFe2O4, wherein the mixture is not subjected to an oxidation step prior to calcining.
摘要翻译:用于制备通式为MFe 2 O 4的软立方铁氧体的方法,包括以下步骤:使包含Fe(II),Fe(III),Fe(II / III)的金属铁和/或氧化物的铁源与 通式M x O y,以形成混合物,其中M与铁的初始化学计量比在大于0至约2的范围内,其中M为镍,镁,锌或其组合; 并在静态空气气氛中在约1000℃至约1500℃的温度范围内煅烧混合物,以形成通式为MFe 2 O 4的软立方铁氧体,其中该混合物不经历氧化步骤 煅烧。
摘要:
A method of: dissolving salts of a first metal ion and a second metal ion in water to form a solution; heating the solution to a temperature of about 80-90° C.; and adding a base to the solution to precipitate nanoparticles of an oxide of the first metal ion and the second metal ion.
摘要:
The present invention provides an electrocatalytic material and a method for making an electrocatalytic material. There is also provided an electrocatalytic material comprising amorphous metal or mixed metal oxides. There is also provided methods of forming an electrocatalyst, comprising an amorphous metal oxide film.
摘要:
According to one embodiment, there is provided an active material. The active material contains a composite oxide represented by the following general: a general formula Lix(Nb1-yTay)2+0.5zTi1-zM0.5zO7 (0≦x≦5, 0≦y≦1, and 0