36 results about "Bismuth oxychloride" patented technology

This invention provides iodine-doped bismuth oxychloride nanosheets, their preparation method, and applications. The preparation method of iodine-doped bismuth oxychloride nanosheets includes: reacting C7H... 13 IN2 is dissolved in anhydrous acetic acid, and then Bi(NO3)3·5H2O is added and stirred to obtain suspension A. KCl is dissolved in water to obtain solution B. Solution B is added dropwise to suspension A, and then polyethylene glycol is added to obtain suspension C. Suspension C is transferred, reacted, filtered, and washed, and then dispersed in anhydrous ethanol and dried to obtain iodine-doped bismuth oxychloride bulk. The iodine-doped bismuth oxychloride bulk is mechanically exfoliated and transferred onto a SiO2 / Si substrate to obtain the final product. The application of iodine-doped bismuth oxychloride nanosheets involves photolithography, development, and sputtering to prepare Pt / I-BiOCl / Pt memristor devices. The iodine-doped bismuth oxychloride nanosheets prepared in this invention exhibit good analog resistive switching performance and can be used to prepare synaptic memristors.

This invention belongs to the field of environmental material preparation technology, and specifically relates to a method for preparing a silver / bismuth oxychloride / bismuth oxide / carbon fiber composite photocatalyst, comprising the following steps: A. Mixing carbon fiber with bismuth nitrate solution to react and obtain bismuth oxide / carbon fiber; B. Reacting the bismuth oxide / carbon fiber obtained in step A with bismuth nitrate solution and hexadecyltrimethylammonium chloride solution to obtain bismuth oxychloride / bismuth oxide / carbon fiber; C. Taking the bismuth oxychloride / bismuth oxide / carbon fiber obtained in step B, carrying out a photoreduction reaction in silver nitrate solution, and obtaining a flexible silver / bismuth oxychloride / bismuth oxide / carbon fiber photocatalyst after washing and drying.

The invention belongs to the technical field of cosmetics, and particularly relates to an anti-darkness powder make-up composition and a preparation method thereof. According to the anti-darkness powder make-up composition provided by the invention, the oil control capacity of the anti-darkness powder make-up composition is enhanced by carrying out alkali treatment modification on the polymethylsilsesquioxane, and the anti-darkness powder make-up composition is matched with nonionic silicon surfactants such as tricalcium phosphate, bismuth oxychloride, trimethoxysilyl polydimethylsiloxane / trimethylsiloxy ammonia-terminated polydimethylsiloxane and the like; the anti-darkness powder makeup fixing composition has the effects of instantly brightening the skin color and resisting darkness for a long time, so that the technical problem that the makeup is easy to become dark after makeup fixing in the prior art is solved.

The present application relates to a kind of for CO2 reduction CsPbBr3 quantum dot / BiOCl heterojunction photocatalyst and its preparation method, the preparation method has the following steps: with bismuth oxychloride and lead nitrate is added to aqueous solution, freeze-drying after ultrasonic, by muffle furnace calcination, obtain precursor material;CsPbBr3 quantum dot / BiOCl heterojunction photocatalyst is obtained by two-step calcination method again by adding cesium bromide and potassium bromide, dissolving, ultrasonic, freeze-drying, by muffle furnace calcination its feature is.CsPbBr3 quantum dot / BiOCl heterojunction photocatalyst prepared has excellent performance and good cycle stability.The drug used in preparation is easily obtained and low in price, and preparation is simple and short in time.CsPbBr3 quantum dot / BiOCl heterojunction photocatalyst prepared can be successfully applied in the field of photocatalytic CO2 reduction.

The invention belongs to the technical field of inorganic functional materials, and provides a bismuth oxychloride coated mica composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing mica, a pH value regulator and water to obtain a mica suspension; mixing a bismuth source, a chlorine source and water to obtain a mixed raw material solution; mixing the mica suspension liquid with the mixed raw material liquid, and carrying out an in-situ precipitation reaction to obtain a bismuth oxychloride coated mica composite material precursor; and carrying out heat treatment on the bismuth oxychloride coated mica composite material precursor to obtain the bismuth oxychloride coated mica composite material. The method is simple and mild in condition, the prepared bismuth oxychloride coated mica composite material does not harm human health, the particle size distribution and dispersion performance of bismuth oxychloride are improved, agglomeration is not prone to occurring, and the bismuth oxychloride coated mica composite material has wide application prospects in manufacturing of high-end cosmetics.

The invention discloses a spherical bismuth oxychloride and tin oxide composite material as well as a preparation method and application thereof, and belongs to the field of catalyst technology and electro-catalysis application. According to the spherical bismuth oxychloride and tin oxide composite material, bismuth salt and organic acid serve as raw materials, an organic solvent and hydroxylamine hydrochloride are added under high-speed stirring, then spherical bismuth oxychloride is obtained through a hydrothermal reaction, finally, the spherical bismuth oxychloride and tin salt are physically mixed, and the spherical bismuth oxychloride and tin oxide composite material is obtained. And placing in a muffle furnace for high-temperature calcination to obtain the spherical bismuth oxychloride and tin oxide composite material. The composite material product has extremely high selectivity under an alkaline condition, and high-yield preparation of alkaline hydrogen peroxide is realized by combining a self-made flow type electric reactor. The electrocatalyst prepared by the method disclosed by the invention has extremely high selectivity and high yield for electrocatalytic preparation of hydrogen peroxide, and has a good application prospect in a reaction for realizing on-site in-situ production of hydrogen peroxide.

The utility model relates to the technical field of automobile surface coatings, in particular to an ultraviolet excitation bismuth oxychloride-containing nano coating for an automobile surface and an automobile. The coating can enhance the visual effect of the automobile surface and improve the safety. The light-emitting material is mainly composed of bismuth oxychloride (BiOCl)-containing nanoparticles, has strong light-emitting ability, and can emit continuous light in an ultraviolet environment. The coating not only has good visible light absorption and luminescence properties, but also has excellent wear resistance, weather resistance and adhesive force, is suitable for being coated on the external surface of an automobile, and can improve the visibility and safety of the automobile.

This invention belongs to the field of catalyst technology, and relates to a porous carbon-coated bismuth oxychloride nanoparticle catalyst for the electrocatalytic synthesis of formic acid from carbon dioxide, its preparation method, and its application. The porous carbon-coated bismuth oxychloride nanoparticle catalyst for the electrocatalytic synthesis of formic acid from carbon dioxide comprises the following steps: S1. Mixing Bi metal salt, hydroxylamine hydrochloride, and tricresylbenzene in a solvent to obtain a solution; S2. Subjecting the solution from step S1 to a hydrothermal reaction, drying, and carbonization treatment sequentially to obtain the porous carbon-coated bismuth oxychloride nanoparticle catalyst. This invention exhibits high formic acid Faradaic efficiency in the electrocatalytic synthesis of formic acid from carbon dioxide, and also possesses excellent electrochemically active specific surface area and a larger current density, solving the problem of limited electron transport rate.

This application relates to the field of new materials technology, specifically to a composite material of bismuth oxychloride and neodymium-doped aluminum phosphate, its preparation method, and its application. The composite material is composed of bismuth oxychloride and neodymium-doped aluminum phosphate. The bismuth oxychloride and neodymium-doped aluminum phosphate composite material of this invention possesses both photocatalytic and radiative cooling functions, exhibiting a significant synergistic effect.

According to the magnetic single crystal thin film, the preparation method and the application thereof, a chemical vapor deposition method is adopted, high-melting-point chromium powder is used as a gas-phase slow-release regulating agent to construct a composite precursor with low-melting-point bismuth oxychloride powder, and key growth parameters such as the raw material proportion, the reaction temperature, the deposition time and the carrier gas flow are regulated and controlled through a system, so that the magnetic single crystal thin film is obtained. Under the condition that the temperature is lower than the traditional process temperature (300-450 DEG C), the Bi2-xCrxTe3 magnetic single crystal film with high crystal quality and consistent crystal orientation height is prepared, the Cr doping concentration of the Bi2-xCrxTe3 magnetic single crystal film is 0.1-2.0 at%, and the minimum thickness of the Bi2-xCrxTe3 magnetic single crystal film can reach 1.1 nm. The low-temperature preparation process provided by the invention has good semiconductor manufacturing compatibility, and a feasible material platform is provided for research of the magnetic topological insulator and application of the magnetic topological insulator in the fields of topological quantum devices, quantum spintronics and the like.

Bismuth oxyhalide composite material for filtering ultraviolet radiation. The present invention relates to the use, preferably cosmetic, of a composite material P comprising one or more particles of bismuth oxyhalide(s) (a), in particular bismuth oxychloride, and its solvates, such as its hydrates, the largest average dimension of said particles being less than 400 nm; and at least one chemically inert compound (b), selected from (b)i) organic compounds with a carboxy group, (b)ii) polymers, (b)iii) silicon organic compounds, and (b)iv) inorganic compounds, or mixtures thereof, for filtering UV radiation, preferably UV-B, as well as processes for preparing and composing cosmetic compositions. Figure for abstract: None

The invention provides a circulating dechlorination method for chlorine-containing wastewater. The circulating dechlorination method comprises the following steps: S1, adding bismuth sulfate into the chlorine-containing wastewater to carry out dechlorination reaction; s2, carrying out solid-liquid separation on the reaction liquid after the dechlorination reaction to obtain bismuth oxychloride; s3, bismuth oxychloride is dried at the temperature of 90-200 DEG C; s4, roasting the dried bismuth oxychloride and concentrated sulfuric acid at 200-300 DEG C to obtain bismuth sulfate; and S5, returning the bismuth sulfate obtained in the step S4 to the step S1. After the dechlorination reaction, the bismuth oxychloride slag is dried and then roasted, on one hand, excessive water in the bismuth oxychloride slag is prevented from being brought into concentrated sulfuric acid to corrode reaction equipment, on the other hand, the bismuth oxychloride slag can be roasted at the low temperature of 200-300 DEG C after being dried, and high-temperature corrosion of the equipment and high-temperature decomposition of sulfuric acid are prevented.

The invention provides a bismuth oxychloride-coated glass flake composite material as well as a preparation method and application thereof, and belongs to the technical field of inorganic functional materials. The method comprises the following steps: adding a silicon source into a glass flake suspension under an alkaline condition to form a silicon dioxide coating layer on the surface of the glass flake; and under an acidic condition, continuing to add a bismuth salt solution for in-situ deposition to obtain the glass flake composite material coated with bismuth oxychloride. According to the preparation method, a silicon source forms a silicon dioxide coating layer on the surface of the glass flake under an alkaline condition, and then bismuth ions and chloride ions are subjected to in-situ deposition under an acidic condition to form a bismuth chloride oxide coating layer, so that bismuth chloride oxide is prevented from being agglomerated during use.

The invention belongs to the technical field of catalysts, and relates to a porous carbon coated bismuth oxychloride nanoparticle catalyst for synthesizing formic acid by electro-catalysis of carbon dioxide as well as a preparation method and application of the porous carbon coated bismuth oxychloride nanoparticle catalyst. A preparation method of the catalyst comprises the following steps: S1, mixing Bi metal salt, hydroxylamine hydrochloride and benzenetricarboxylic acid in a solvent to obtain a solution; s2, sequentially performing hydrothermal reaction, drying and carbonization treatment on the solution in the step S1 to obtain the porous carbon coated bismuth oxychloride nanoparticle catalyst. In the process of synthesizing formic acid through electro-catalysis of carbon dioxide, high formic acid Faraday efficiency is achieved, the electrochemical activity specific surface area is excellent, the current density is larger, and the problem that the electron transmission rate is limited is solved.

Interference pigment comprising a hollow platelet capsule and synthesis method. The present invention relates to interference pigments comprising a hollow capsule of a metal oxide such as silica, and a layer of a material selected from zinc oxide, bismuth oxychloride, and cerium dioxide. The invention further provides a method for synthesizing these pigments and cosmetic compositions containing them.

The invention belongs to the technical field of preparation of nano-catalysts, and discloses a method for preparing bismuth oxychloride nano-flowers through tea saponin induction and application of the bismuth oxychloride nano-flowers. The method comprises the following steps: mixing a bismuth source, a chlorine source and a solvent, then adding tea saponin, mixing, carrying out a heating reaction, and separating to prepare the bismuth oxychloride nanoflower, the preparation method of the tea saponin comprises the following steps: mixing tea seed meal powder with water, carrying out water bath extraction, and filtering to obtain filtrate; mixing the filtrate with aluminum sulfate or a hydrate of the aluminum sulfate, boiling, settling and centrifuging to obtain supernate, and then adding activated carbon for decoloration to obtain decolorized supernate; boiling and concentrating the decolorized supernatant, cooling, and adding absolute ethyl alcohol to obtain a conversion extraction solution containing flocculent precipitate; and concentrating and drying to obtain the tea saponin. According to the method disclosed by the invention, the bismuth oxychloride nanoflowers are prepared through induction of the tea saponin, and the prepared bismuth oxychloride nanoflowers have a good catalytic oxidation diesel oil desulfurization effect.

The application discloses a semiconductor composite material and a preparation method and application thereof, and relates to the technical field of photocatalysis, and specifically discloses a semiconductor composite material which comprises an MOFs material and bismuth oxychloride; the bismuth oxychloride is loaded on the surface of the MOFs material; and the MOFs material is NU-1000. The semiconductor composite material has a heterojunction formed between the NU-1000 and the bismuth oxychloride, effective charge carrier transfer exists on the heterojunction interface, the separation of photo-generated holes and electrons is better promoted, and the semiconductor composite material has enhanced adsorption performance, excellent photocatalytic activity and stability to tetracycline under visible light irradiation.

The application relates to a built-in electric field enhanced phosphorus-vanadium co-doped bismuth oxychloride as well as a preparation method and application thereof. Bismuth nitrate pentahydrate and sodium hypophosphite monohydrate are dissolved in ethylene glycol to obtain solution A; potassium chloride and ammonium metavanadate are dissolved in water to obtain solution B; solution B is added drop by drop into the stirring solution A, and after fully stirring and reacting at room temperature, a hydrothermal reaction is carried out, so as to uniformly and effectively improve the IEF of the BiOCl material and improve the specific effect of the photocatalytic performance.

This invention discloses a bismuth-containing composite, its preparation method, and its application in chloride ion elution. The bismuth-containing composite comprises bismuth oxide and a dopant element, which is one or more of titanium, nickel, copper, iron, cobalt, carbon, and nitrogen. As a dechlorination agent, this bismuth-containing composite, by selecting a semiconductor element as the dopant, can reduce the stability of the Bi-O covalent bonds in the sample, making them more susceptible to breakage under hydrogen ion attack, leading to structural collapse and the release of more bismuth ions, thus promoting the dechlorination reaction. Furthermore, after the bismuth-containing composite participates in the dechlorination reaction, the dechlorination product easily forms a heterojunction under light excitation during elution, allowing electrons to transfer to the introduced semiconductor, forming electron-hole pairs. The remaining holes on the bismuth oxychloride undergo photocorrosion, promoting the conversion of bismuth oxychloride to bismuth oxide, facilitating recycling, and improving subsequent dechlorination efficiency.

The application discloses a preparation method of a cobalt-doped bismuth oxychloride photocatalyst. Cobalt nitrate hexahydrate and bismuth nitrate pentahydrate are dissolved in water under magnetic stirring, and then dilute nitric acid and sodium chloride are added in sequence to obtain a precursor solution. The precursor solution is loaded into a polytetrafluoroethylene liner, and a hydrothermal reaction is carried out, and then natural cooling is carried out to room temperature. The cobalt-doped bismuth oxychloride photocatalyst can be obtained by washing and drying with water and ethanol. The raw material used in the application has low cost, the method is mature and stable, and no harmful organic solvent is used in the reaction, so that the application is a high-efficiency and green synthesis method. The cobalt-doped bismuth oxychloride photocatalyst synthesized in the application changes the energy band structure of bismuth oxychloride, the absorption capacity of sunlight spectrum is improved through the introduction of cobalt-doped energy level, and then the photocatalytic degradation capacity of organic pollutants is greatly improved.

The invention belongs to the technical field of medicine, and relates to a preparation method and application of a multifunctional nano gas bomb. The preparation method comprises the following steps: dissolving DPPC, DSPE-PEG and a sound-sensitive agent in a solvent, and carrying out rotary evaporation to remove the solvent so as to obtain a lipid film; adding a phosphate buffer solution containing an NO precursor and defective bismuth oxychloride quantum dots with the average particle size of 1-10 nm into the lipid film, and carrying out hydration treatment, so that the lipid film falls off and is self-assembled into liposome; and carrying out ultrasonic treatment on the hydrated suspension, and then purifying to obtain the final nano aerobomb. According to the invention, sonodynamic therapy, photo-thermal therapy and gas therapy are deeply integrated for the first time, and efficient physical-chemical synergistic killing of tumors is realized under mild photo-thermal conditions.

This invention discloses a bismuth oxychloride layered membrane, its preparation method, and its application. The preparation method includes the following steps: Step 1: preparing bismuth oxychloride nanosheets via liquid-phase reaction. Concentrated hydrochloric acid is added to deionized water and heated to a stable temperature. A surfactant is added, and the mixture is mechanically stirred until homogeneous. A bismuth nitrate solution is added using a peristaltic pump, and the addition rate of sodium hydroxide solution is adjusted to stabilize the pH of the reaction system. When the size of the bismuth oxychloride nanosheets reaches a predetermined value, sodium hydroxide solution is rapidly added to adjust the pH of the reaction system. Heating and stirring are stopped to obtain bismuth oxychloride nanosheets. Step 2: preparing a two-dimensional layered membrane via vacuum filtration and self-assembly. One-dimensional materials and bismuth oxychloride nanosheets are added to distilled water to obtain a dispersed precursor. The dispersed precursor is vacuum filtered and naturally dried to obtain the bismuth oxychloride layered membrane. This bismuth oxychloride layered membrane exhibits excellent solar interface water evaporation and photocatalytic hydrogen evolution performance, enabling high comprehensive solar energy utilization efficiency.

The invention provides a layered heterojunction filler modified polyimide coating material as well as a preparation method and application thereof, and belongs to the technical field of anti-corrosion and wear-resistant coatings. Graphite phase carbon nitride, Bi salt and Cl salt are adopted to construct a BiOCl (at) g-C3N4 heterojunction composite material, then the BiOCl (at) g-C3N4 heterojunction composite material is compounded with polyimide to obtain a polyimide coating material, and the self-lubrication and wear resistance of the polyimide composite coating can be improved through construction of the bismuth oxychloride and the graphite phase carbon nitride layered heterojunction BiOCl (at) g-C3N4. Meanwhile, due to the construction of a heterostructure, the ion transmission path can be increased, and the corrosion resistance of the polyimide coating is further improved.

The invention discloses a bismuth-based monatomic doped bismuth oxychloride nano treatment platform as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The nano treatment platform is a metal monatomic doped bismuth oxychloride two-dimensional nanosheet, and the preparation method comprises the following steps: dissolving a bismuth source and a surfactant in a polyol solution, adding a chloride source to form a bismuth oxychloride precursor, and introducing a monatomic source to carry out a hydrothermal doping reaction. According to the platform, in a tumor microenvironment, hydrogen peroxide self-supply and glutathione efficient consumption can be achieved through valence state circulation of metal single atoms, a large amount of active oxygen is generated under the ultrasonic action, chemical dynamics and sonodynamic treatment effects are synergistically enhanced, meanwhile, the platform has good biodegradability and safety, and the platform is suitable for being used in tumor treatment. And a new strategy is provided for precise and efficient treatment of tumors.

The invention relates to a bismuth oxychloride-based anti-static coating for a door handle and a preparation method of the bismuth oxychloride-based anti-static coating. Bismuth oxychloride (BiOCl) is used as a novel functional material, has a unique layered crystal structure, excellent chemical stability and good semiconductor performance, is wide in raw material source and low in cost, and is widely applied to the fields of photocatalysis, pigments and the like.

The present invention relates to interference pigments comprising a hollow capsule made from a metal oxide such as silica, and a layer of a material selected from zinc oxide, bismuth oxychloride and cerium dioxide. The invention further relates to a process for synthesizing these pigments, and to cosmetic compositions containing them.

The application belongs to the field of photocatalysis, and particularly relates to a preparation method of a carboxyl-modified phthalocyanine cobalt and bismuth oxychloride constructed heterojunction catalyst, which comprises the following steps: taking CoTcPc, Bi(NO3)3.5H2O and KCl with a molar ratio of 1-7:100:100; dissolving Bi(NO3)3.5H2O powder in a preset concentration of HNO3 solution, then adding CoTcPc, mixing uniformly to obtain solution A; wherein the molar ratio of Bi(NO3)3.5H2O to HNO3 is 1:20; dissolving KCl powder in a preset concentration of NaOH solution to obtain solution B; wherein the molar ratio of KCl to NaOH is 1:20; mixing solution A and solution B uniformly, adjusting the pH to neutral, then continuously stirring for 20-30 min, fully reacting to obtain solution C; transferring solution C into a reaction kettle, reacting at a preset temperature for a preset time, and naturally cooling to room temperature to obtain sample D; and washing and drying sample D to obtain CoTcPc / BiOCl heterojunction material. The CoTcPc / BiOCl heterojunction material prepared by the method can improve the degradation performance of typical antibiotics in water.

This invention discloses a bismuth oxychloride-based composite material with enhanced ultraviolet light blocking efficiency, its preparation method, and its applications. The bismuth oxychloride-based composite material is composed of metallic bismuth nanocrystals and a zinc-doped bismuth oxychloride matrix. The preparation method includes the following steps: preparation of a bismuth nanocrystal precursor; co-precipitation and crystal development of the bismuth nanocrystals and the zinc-doped bismuth oxychloride composite material; and cleaning and drying to obtain the target bismuth nanocrystal-modified bismuth oxychloride-based composite material, namely, the Bi@Zn-BiOCl composite material. Compared with traditional bismuth oxychloride powder, the Bi@Zn-BiOCl composite material exhibits an ultraviolet light blocking efficiency higher than 95%. Furthermore, the preparation of the Bi@Zn-BiOCl composite material involves mild reaction conditions, a short process, low energy consumption, and supernatant recovery, making it environmentally friendly. The Bi@Zn-BiOCl composite material prepared by this invention possesses excellent ultraviolet light blocking properties, photostability, and pearly luster, and has broad market application prospects.

This invention belongs to the field of glycerol oxidation catalyst technology, and discloses a catalyst for the selective oxidation of glycerol to dihydroxyacetone and its preparation method. The catalyst consists of platinum metal nanoparticles and a bismuth oxychloride-zirconia composite support. Bismuth oxychloride is grown in situ on the zirconium oxide surface to form a heterojunction interface. The platinum metal nanoparticles are anchored to the heterojunction interface by simultaneously interacting with both bismuth oxychloride and zirconium oxide, forming a platinum-bismuth oxychloride-zirconia interface anchoring structural unit. This invention utilizes the heterojunction interface formed by BiOCl and ZrO2 to generate electron redistribution at the interface. The Pt nanoparticles anchored at this interface undergo synergistic electronic coupling with the two supports, thereby regulating the electronic structure of Pt and optimizing its adsorption and activation behavior for glycerol molecules, making Pt more conducive to promoting the directional oxidation reaction pathway of secondary hydroxyl groups.