35 results about "Bismuth salts" patented technology

The invention discloses a method for preparing bismuth titanate as a visible light response semiconductor photochemical catalyst, which comprises the steps of: dissolving bismuth salts in nitric acid at room temperature, dissolving vanadate or metavanadate same mol with the bismuth salts in 60-90 DEG C hot water, and respectively adding benzene or polyethylene glycol or a mixed solution of the benzene and the polyethylene glycol in two solutions obtained from the steps; and dropping vanadium-containing liquid into bismuth-containing liquid under the stirring state, stirring, ageing, filtering, washing and drying to prepare the bismuth titanate BiVO4 as a visible light response semiconductor photochemical catalyst. The BiVO4 prepared by the steps has the advantages of strong response of visual light, high photocatalytic oxidation degrading capability, simple preparation method, short reaction time and easy industrialized production.

The invention relates to a nanometer zinc oxide-bismuth oxide composite photocatalyst with visible light response and a preparation method thereof. The composite is formed by compounding nanometer zinc oxide, bismuth oxide and graphene oxide at a mass ratio of 1: 0.05-1: 0-2. The preparation method comprises the steps of: respectively adding water-soluble zinc salts, bismuth salts and urea in an aqueous solution; after a co-precipitation reaction, centrifuging, washing, drying and roasting products; then placing the reaction products in an ultrasonically dispersed grapheme oxide aqueous solution to be heated and stirred for a reaction; after the reaction is finished, centrifuging, washing and drying the products to obtain the zinc oxide-bismuth oxide composite photocatalyst. The zinc oxide-bismuth oxide composite photocatalyst disclosed by the invention has better application prospect and economic benefits in the aspect of sewage treatment.

The invention relates to a preparation method of a piezoelectric ceramic with a high Curie temperature and a film thereof. The chemical formula of the prepared piezoelectric ceramic material is (1-x)(BiMg<1/2>Ti<1/2>O<3>)-x(PbTiO<3>)-yMe, wherein 0.3<=x<=0.45, 0<=y<=0.05, and Me represents a modifying element. Bismuth salts, magnesium salts, lead salts, chromium salts, or/and manganese salts and organic titanium salts are taken as the primary raw materials; through selecting a proper dispersing medium and controlling the solution temperature and concentration and addition sequence, the metal salts form uniform sol through the chelating effect of a stabilizing agent, then the sol is concentrated, dried and calcined to obtain piezoelectric nano powder with a high Curie temperature, and the piezoelectric nano powder is ball-grinded, dried, screened, pressed, and sintered to prepare piezoelectric ceramic with a high Curie temperature. Or through various solution methods such as spin coating, infiltrating, and the like, uniform sol is painted on an inorganic substrate to prepare a film, and then the substrate is dried and annealed to prepare a piezoelectric ceramic film. The prepared piezoelectric ceramic film can be used to prepare various related piezoelectric devices with a work temperature higher than 200 DEG C such as energy converter, sensor, and the like, and has a wide application prospect.

The present disclosure relates to a hair treatment agent for reducing and/or avoiding bleeding out and/or fading of artificially produced hair colours with a pH in a range of from about 3.5 to about 5 containing—relative to the total quantity of hair treatment agent—

• a) from about 0.01 to about 10 wt. % of a polyvalent metal salt, wherein the metal salt is selected from the group of strontium salts, zirconium salts, hafnium salts, titanium salts, tin salts, aluminium salts, bismuth salts, lanthanum maleate, lanthanum chloride and mixtures thereof and
• b) from about 0.01 to about 10 wt. % of an organic acid selected from the group of tartaric acid, citric acid, maleic acid, fumaric acid, salicylic acid, lactic acid, malic acid, amino acids and mixtures thereof.

The invention belongs to the field of nanometer materials, and discloses a porous and high-specific-surface-area bismuth-nanoparticle-modified nitrogen-doped carbon nanosheet material and a preparation method and application thereof. The preparation method comprises the following steps that a polyvinylpyrrolidone solution is used as a nitrogen source and a carbon source, and is added into a beaker; bismuth salts are added into a nitrogen source solution and stirred, and the pH value is adjusted by using a weak acid solution to dissolve all the bismuth salts; the prepared solution is placed inan electrothermal blowing dry box to be dried to obtain a solid precursor; and the solid precursor is ground into fine powder and then placed into a porcelain boat, and is placed into a tube furnace to be heated and roasted under the condition of protecting the air environment to obtain the nanosheet material. According to the preparation method, synthesis and doping of carbon nanomaterials and modification of bismuth nanoparticles are combined into one, the obtained bismuth-nanoparticle-modified nitrogen-doped carbon nanosheet material is stable in structure and performance, and the good heavy metal detection performance is achieved; and the preparation method is simple and easy to operate, low in cost and suitable for large-scale production.

An antibacterial or anti-acne formulation containing (a) tropone or a substituted tropone and (b) a metal or metal salt selected from copper, copper salts, bismuth, bismuth salts, silver, silver salts, and mixtures thereof, for use in the treatment of either acne or body odour. The substituted tropone may be for example tropolone or hinokitiol.

Waterborne cathodic electrodeposition (CED) coating agents comprising resin solids and optionally pigments, fillers, organic solvents and conventional coating additives, wherein said CED coating agents comprise at least one bismuth salt selected from the group consisting of bismuth hydroxycarboxylic acid salts and bismuth sulfonic acid salts in a quantity of 0.1 to 2.5 wt-%, calculated as bismuth and relative to resin solids content, together with at least one compound selected from the group consisting of yttrium and neodymium compounds in a quantity of 0.1 to 1 wt-%, calculated as metal and relative to resin solids content.

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a bismuth mono- or dithiocarbamate or mono- or dithiocarbonate salt.

Energetic compounds based on bismuth salts with reduced toxicity that are obtained through the reaction of soluble bismuth salts with soluble salts of organic or inorganic energetic compounds based on azides, derivatives aromatic nitro compounds or nitrogenous heterocyclic compounds, together with the methods for their preparation and application.

The present invention relates to a nanometer fluorescence thermometer and a preparation method thereof, specifically to a rare earth doped nanometer fluorescence thermometer and a preparation method thereof. The nanometer thermometer provided by the invention is the fluorescent material with particle sizes of 50-200 nm. The best preparation method is that: serving soluble bismuth salts, soluble erbium salts, TiO2 powder and excessive NaOH which are prepared according to the designed constituents as raw materials; uniformly mixing the mixture after adding water into the raw materials, and then transferring to a reaction still; performing hydrothermal reaction of the mixture at the temperature higher than 160 DEG C over 12 hours; and washing and drying the mixture, and obtaining the nanometer fluorescence thermometer. The nanometer fluorescence thermometer provided by the invention may be applicable to the temperature detection under a microenvironment, such as a real time online measurement of biological cells of living bodies, therefore the detection accuracy and the range of application may be greatly improved in the biology or other related industries.

This invention relates to salts of sulfodehydroabietic acid with bismuth or zinc, a kind of new salt useful in treating digestive canal ulcer, acute & chronic gastritis, and erosive gastritis etc., as well as its preparation and use. Said salts can be represented by formula (1), wherein R is Bi(OH)<++> or Zn<++>, 2Bio<+>, 1/2ZnH, n=0-10. The preparation method comprises following steps: (a) sequentially treating the industrial abietic acid calcium salt with acid, base and extracting with organic solvent to give abietic acid with less isomer; (b) reacting said abietic acid with Pd/C to provide dehydroabietic acid, then converting it to pure sulphonic product, namely sulfodehydroabietic acid, via sulphonation and recrystallization; (c) by use of neutralization or salt displacement reaction to convert the sulphonic product of zinc or bismuth salts of sulfodehydroabietic acid. The resultant salts can used to prepare medicine for treating digestive canal ulcer and gastritis.

The invention provides a method for detecting an annual ring of a desert plant haloxylon. According to the method, the annual ring of the haloxylon can be accurately measured, and the method specifically comprises the following detection steps: A, detecting a haloxylon standard sample, namely taking a haloxylon trunk growing in desert and gobi, cutting a flake sample, and polishing the sample to be smooth for later use; B, coating an alkaloid color developing agent on the sample, and acquiring the annual ring data after a clear annual ring appears on the sample surface. Alkali in the haloxylon is combined with the alkaloid color developing agent to present brownish red; the alkaloid color developing agent is an aqueous solution of bismuth salts and acids, wherein the content of bismuth element is 0.0001-0.04mol/L, and the concentration of hydrogen ion is 1.3-3.5mol/L. According to the detection method, chromatic aberration occurs in the trunk section, and the annual ring of the haloxylon can be clearly read out under a microscope.

The invention discloses a stannic oxide matrix composite solid catalyst suitable for preparing allantoin and a preparation method thereof. The preparation method includes the following steps of: 1) mixing tin salts, bismuth salts, cobalt salts, starch and hydrochloric acid solution, adding alkali into the system and performing ultrasonic oscillation, filtering and taking a filter cake, standing and drying to obtain a reaction product; 2) calcining the reaction product to obtain a tin dioxide matrix composite solid catalyst suitable for preparing allantoin. The composite solid catalyst has excellent catalytic efficiency for the synthesis of allantoin, and the preparation method has the advantages of simple process and readily available raw materials.