29 results about "Bismuth titanate" patented technology

The invention discloses a texture preparation method for high-performance lead-free piezoelectric ceramics of bismuth ferrite-barium titanate. The general formula of the ceramic composition is as follows, where the molar fraction ratio of BiFeO3 and BaTiO3 is 2:1, x, y, t, and m all represent molar fractions, and 0 < x ≤ 0.05, 0 < y ≤ 0.05, 0 < t ≤ 0.05, 0 < m ≤ 0.05. In the sintering stage of the invention, a temperature gradient field is constructed to make the ceramic grains grow texture-directionally, and a textured piezoelectric ceramic with a piezoelectric constant d 33 reaching above 1000 pC / N at 350 °C and a T dr reaching above 350 °C is obtained. The preparation process of the invention is simple, and the prepared ceramic has excellent high-temperature performance and can be applied to the field of high-temperature piezoelectricity.

The application discloses a low-loss high-Curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and a preparation method thereof. 1.02 FeO3-(0.25-x)BaTiO3-xCaZrO3+y%GeO2+z%MnO2; wherein x, y and z represent molar fractions, 0.005<=x<=0.020, 0.3<=y<=1, 0.5<=z<=1.5. The application introduces the third component CaZrO3, and adds GeO2 and MnO2, controls the crystal phase composition and the conductive carrier concentration, improves the microstructure, reduces the loss and improves the temperature stability, so that the Curie temperature, the depolarization temperature and the piezoelectricity are obviously improved. The lead-free piezoelectric ceramic material provided by the application has a simple synthesis process, and is expected to be applied to the preparation of high-temperature piezoelectric sensor devices.

The invention discloses a bismuth titanate biomass charcoal composite material for environmental remediation and a preparation method thereof, and relates to the field of environmental functional materials.The composite material takes corncob biomass charcoal as a carrier, and bismuth titanate nanoparticles are loaded on the surface and in pores of the corncob biomass charcoal; the corncob biomass charcoal has a hierarchical porous structure, the specific surface area of the corncob biomass charcoal is not less than 1500 m / g, and the surface of the corncob biomass charcoal is rich in oxygen-containing functional groups; the bismuth titanate nanoparticles and the corncob biomass charcoal are tightly combined through a heterojunction interface; according to the bismuth titanate biomass charcoal composite material for environmental restoration and the preparation method of the bismuth titanate biomass charcoal composite material, firstly, pollutants are rapidly adsorbed and enriched to the periphery of bismuth titanate active sites through the high specific surface area and abundant pore structure of the corncob charcoal, local high concentration is formed, and favorable conditions are created for subsequent photocatalytic reaction; bismuth titanate generates strong oxidizing active oxygen species under excitation of visible light, and adsorbed pollutants are thoroughly degraded.

The application discloses a preparation method of a sheet-shaped Nb element doped modified bismuth titanate catalyst material. 3‑x Nb x O 12 , wherein 0.15<=x<=0.40, the molar ratio of Bi, Ti and Nb is taken as bismuth oxide, titanium dioxide and niobium pentoxide; step two: the raw materials in step one and the mass ratio of the molten salt are mixed, then the mixture is put into a crucible and fully grinded to obtain a mixture; step three: the mixture prepared in step two is fired in a muffle furnace, and a light yellow product is obtained after cooling; step four: the light yellow product prepared in step three is washed with deionized water, filtered and dried to obtain a sheet-shaped Nb element doped bismuth titanate catalyst powder. The technology can significantly improve the structural uniformity, defect concentration and piezoelectric response activity of the material, greatly reduce the energy consumption and time cost, provides an efficient path for large-scale production of high-performance catalysts, and has a wide market prospect.

This invention belongs to the field of biomedical materials technology, and relates to a piezoelectrically enhanced nanoenzyme composite material, its preparation method, and its antibacterial application. Cobalt-doped molybdenum disulfide is grown in situ on the surface of bismuth titanate nanosheets to obtain a BTO@Co-MoS2 composite material. This composite material exhibits a piezoelectric effect under pressure stimulation. Electrons, under the influence of the built-in electric field at the BTO@Co-MoS2 interface, promote the self-cycling of the molybdenum disulfide redox pair, thereby improving the catalytic activity of halogen-like peroxidases. Simultaneously, the piezoelectric catalysis of hydrogen peroxide generation alleviates the problem of insufficient endogenous hydrogen peroxide. In antibacterial applications, the piezoelectrically enhanced nanoenzyme composite material prepared by this invention achieves bactericidal rates of 98.39% and 99.95% against Staphylococcus aureus and Escherichia coli, respectively.

This invention relates to the field of piezoelectric ceramics technology, and in particular to a composite ion-modified bismuth layered bismuth titanate calcium-based high-temperature piezoelectric ceramic and its preparation method. The general formula for high-temperature piezoelectric ceramics is: Ca 1‑x (LiCe) x / 2 Bi 3.75 Nd 0.25 Ti 3.935 Sc 0.065 O 15 , where x is a complex high-valence ion (LiCe). 4+ Twice the molar amount, x = 0.02, 0.05, 0.08, 0.10. This invention employs the above-mentioned composite ion-modified bismuth layered bismuth titanate calcium-based high-temperature piezoelectric ceramic and its preparation method to meet the application requirements in high-temperature environments while ensuring the material's environmental friendliness.

The application relates to the technical field of catalysts, and particularly discloses a sulfur-tolerant shift catalyst as well as a preparation method and application thereof. The sulfur-tolerant shift catalyst provided by the application comprises the following components in parts by weight: a carrier, an active component and an additive; the carrier is an acid-modified attapulgite-bismuth titanate composite carrier; the active component is CoO and MoO3, and the loadings of the active component in the catalyst are 2-5 wt% and 8-12 wt% respectively; wherein, the preparation method of the acid-modified attapulgite-bismuth titanate composite carrier comprises the following steps: preparing an acid-modified attapulgite, preparing a bismuth titanate precursor solution, compounding and calcining and activating. The sulfur-tolerant shift catalyst provided by the application has the advantages of low preparation cost, high catalytic activity, good stability and the like, and has a good application prospect.

The invention belongs to the technical field of piezoelectric ceramics, and particularly relates to a high-temperature magnesium bismuth titanate-lead zirconate titanate piezoelectric ceramic material and a preparation method thereof. Comprising the following chemical general formula: 0.65 Bi (Mg < 0.51 > Ti < 0.49 >) O < 3 >-0.35 Pb (Zr < x > Ti < 1-x >) O < 3-y > wt% La2O3, wherein x is equal to 0.01 to 0.7, and y is equal to 0.01 to 2. The piezoelectric ceramic material is prepared from the following raw materials: Pb3O4, TiO2, ZrO2, Nb2O5, Bi2O3, MgO and La2O3. The novel piezoelectric ceramic system has higher Curie temperature of 460-520 DEG C, and can work in a high-temperature environment of 260-400 DEG C. The novel piezoelectric ceramic system is suitable for being applied to a high-temperature sensor piezoelectric device.

The invention provides high-reflection ultralow-temperature UV curing ink, a preparation method thereof and a photovoltaic module, and relates to the technical field of UV curing ink. The high-reflection ultralow-temperature UV curing ink is prepared from the following raw materials in percentage by mass: 50-70% of modified ink oil and 30-50% of glaze powder, wherein the total mass of the raw materials is 100%; the modified ink is prepared from the following raw materials: transparent resin, a high-reflection additive and an auxiliary agent; the glaze powder is prepared from the following raw materials: glass powder, titanium dioxide, bismuth titanate and Bi2Ti2O7 nanocrystals. The high-reflection ultralow-temperature UV curing ink has the advantages that the service life is prolonged, the good environmental protection performance is realized, and the environmental pollution in the production process is favorably reduced; through specific material combination, spectral selectivity is increased, and high reflection of light in a specific wavelength range can be realized, so that the optical performance of the photovoltaic module is optimized; and photo-thermal loss is reduced.

The invention belongs to the technical field of powder preparation by a wet chemical method, and provides a sodium bismuth titanate powder material and a preparation method thereof, the powder material is rhombohedral phase (Bi0. 5Na0. 5) TiO3, the particle morphology of the powder material is a nanocube, and the average size is 76nm. The (Bi0. 5Na0. 5) TiO3 nanocube is prepared through a two-step heating hydrothermal method, has the advantages of being simple in process, low in cost, good in stability and repeatability, capable of being produced on a large scale and the like, and has wide application prospects in the fields of sodium bismuth titanate, sodium bismuth titanate-based ferroelectric ceramics, barium titanate-based thermal sensitive ceramics and the like. The (Bi0. 5Na0. 5) TiO3 nanocube powder prepared by the invention is used as a raw material, (Bi0. 5Na0. 5) TiO3 ceramic sintered at 1100 DEG C for 4 hours has good sinterability and ferroelectricity, the relative density of the (Bi0. 5Na0. 5) TiO3 ceramic is 95% or above, and the maximum polarization intensity, the remanent polarization intensity and the coercive field of the (Bi0. 5Na0. 5) TiO3 ceramic are 40.02 mu C / cm < 2 >, 27.78 mu C / cm < 2 > and 87.5 kV / cm respectively.

This invention discloses a yarn-like ball-shaped BaTiO3 / Bi4Ti3O 12 The preparation method of the catalyst material and the product obtained are described. An ethanol solution of flake-shaped bismuth titanate and tetrabutyl titanate, along with a barium salt solution, are stirred and mixed with an alkaline conditioning solution to obtain an alkaline suspension. After hydrothermal reaction, the suspension is acid-washed, washed, filtered, and dried to obtain yarn-like spherical BaTiO3 / Bi4Ti3O3. 12 Catalyst powder. The catalyst of this invention has a structure of hollow, woolen spheres assembled from nanowires, with nanoparticles embedded on the surface of the spheres. This effectively increases the contact area between the catalyst and the reactants, thereby improving the carrier separation efficiency in piezoelectric catalysis and greatly enhancing catalytic activity. The raw materials of this invention are inexpensive and the operation is simple, solving the problems of complex processes and high costs associated with the synthesis of one-dimensional catalysts or the need for templates and morphology modifications in existing technologies. The product can be applied in photocatalysis and piezoelectric catalysis, and has high application value.

This invention provides a method for preparing bismuth titanate nanoparticles using molten salt assistance. Sodium bismuthate dihydrate, sodium sulfite, titanium sulfate, and sodium nitrate are mixed and ground uniformly to obtain a solid mixture. The solid mixture is then heated at 350°C to melt the sodium nitrate, creating an ion-molten liquid environment. Under this environment, a redox reaction between sodium bismuthate dihydrate and sodium sulfite generates the transition product bismuth oxysulfate, producing sodium hydroxide and creating a self-generated alkaline condition. Simultaneously, under this self-generated alkaline condition, bismuth oxysulfate reacts with titanium sulfate to form bismuth titanate. The reaction product is then post-processed to obtain Bi... 24 Ti2O 40 Nanoparticles. The advantages of this invention are: a synthesis strategy based on an ion-molten liquid environment, accelerated reactant diffusion, and improved chemical reaction efficiency to prepare Bi. 24 Ti2O 40 Nanopowders are easy to prepare, convenient to operate, have a mild reaction, and are low in cost, making them suitable for industrial production.

The invention relates to the technical field of ferroelectric ceramic manufacturing, in particular to a calcium bismuth titanate based ferroelectric ceramic material and a preparation method and application thereof. The chemical formula of the calcium bismuth titanate-based ferroelectric ceramic material is CaBi4-xRxTi4O15-yMnO2, R is one or more of lanthanide rare earth elements, in the formula, x is more than 0 and less than or equal to 0.2, and y is more than or equal to 0.1 wt% and less than or equal to 0.5 wt%. The calcium bismuth titanate-based ferroelectric ceramic material disclosed by the invention has the original ferroelectric, piezoelectric and dielectric properties, also has a photoluminescence characteristic, and belongs to a novel multifunctional material. The ceramic material has excellent photoelectric properties, and has wide application prospects in the fields of photoelectric integration, micro electro mechanical system, photoelectric sensing, LED technology and the like.

The invention relates to bismuth titanate-based lead-free antiferroelectric ceramic as well as a preparation method and application thereof. The chemical composition of the bismuth titanate-based lead-free antiferroelectric ceramic is Bi (4-x) PrxTi3O12, wherein x is greater than or equal to 1.2 and less than or equal to 1.4. The bismuth titanate-based lead-free antiferroelectric ceramic is successfully designed based on typical three-layer bismuth titanate ceramic by introducing a specific amount of Pr element to induce oxygen octahedron rotation, and has the characteristics of antiferroelectric characteristic, high breakdown field strength, high energy storage density and high efficiency. The bismuth titanate-based lead-free antiferroelectric ceramic has relatively high energy storage application potential, the recoverable energy density is 8.0 to 11.97 J / cm < 3 >, the energy storage efficiency is 75.0 to 87.0 percent, and the breakdown electric field is 898 to 1058 kV / cm.

The invention provides a photo-thermal catalyst as well as a preparation method and application thereof. The photo-thermal catalyst comprises a substrate and an active component, the substrate has a stacked mixed metal oxide structure, and the active component comprises metal nanoparticles; and the metal nanoparticles are precipitated in situ from the matrix and are dispersed on the surface and / or inside the matrix. The photo-thermal catalyst provided by the invention has good catalytic conversion activity on carbon dioxide under the illumination of a full-spectrum xenon lamp, and compared with a bismuth titanate catalyst, the photo-thermal catalyst provided by the invention has better performance of photo-thermally catalyzing reduction of carbon dioxide to produce formic acid. The photo-thermal catalyst provided by the invention has obviously enhanced photo-thermal catalytic efficiency in the carbon dioxide reduction process, and can be used for realizing carbon cyclic utilization and relieving the greenhouse effect.

The invention discloses a crystal face junction bismuth titanate photocatalyst, which is a Bi4Ti3O12 material with a macroporous-mesoporous graded porous framework and has a continuous (001) / (100) crystal face junction. The preparation method comprises the following steps: 1) adopting plant stem tissues as a biological template precursor, and performing alkaline leaching, acid leaching and other treatments to obtain a biological template; 2) dissolving a bismuth source and a titanium source in an organic solvent / strong acid mixed solution; then, a biological template is soaked in the obtained Bi4Ti3O12 precursor solution; and 3) carrying out segmented high-temperature calcination on the product obtained in the step 2) in an air atmosphere to prepare the crystal face junction Bi4Ti3O12 photocatalyst. A biological template method is combined with a segmented high-temperature calcination process to induce synchronous construction of a hierarchical porous structure and a crystal face junction, efficient and directional separation of space charges is achieved, and the H2O2 synthesis efficiency and the organic pollutant degradation and mineralization capacity under the low-light-intensity condition are remarkably improved.

The invention discloses a preparation method and application of a composite photocatalyst guided by a ferroelectric polarization field. The preparation method comprises the following steps: synthesizing a layered ferroelectric material bismuth titanate nanosheet from a catalyst raw material through a molten salt method; the bismuth titanate nanosheet is subjected to surface etching treatment, a catalyst BT-HCL is obtained, nano Ag particles are loaded on the catalyst BT-HCL through a photodeposition method, and the silver-loaded catalyst is obtained. According to the invention, selective anchoring and uniform dispersion of Ag nanoparticles on the surface of the catalyst and in pores are realized by using a ferroelectric polarization field, agglomeration is avoided, spatial selective distribution of the Ag nanoparticles is realized, in gas-solid phase CO2 photocatalytic reduction, the CO yield can reach more than 16 times that of original Bi4Ti3O12, the selectivity is high, the stability is good, and the photocatalytic CO2 reduction performance of the Bi4Ti3O12 is improved.

The invention relates to a calcium bismuth titanate-based high-entropy piezoelectric ceramic with high piezoelectric property and a preparation method thereof. The chemical composition of the calcium bismuth titanate-based high-entropy piezoelectric ceramic is Ca < 1-x > (Na < 1 / 6 > Bi < 1 / 6 > Li < 1 / 6 > Ce < 1 / 6 > K < 1 / 6 > Bi < 1 / 6 >) < x > Bi < 4 > Ti < 3.9 > (Nb < 1 / 2 > Mn < 1 / 2 >) < 0.1 > O < 15 >, and x is larger than or equal to 0.1 and smaller than or equal to 0.5. The room-temperature piezoelectric coefficient of the calcium bismuth titanate-based high-entropy piezoelectric ceramic provided by the invention can reach 28.1 pC / N, and meanwhile, the Curie temperature is kept at 700 DEG C or above.

The application belongs to the technical field of functional composite materials and piezoelectric materials, and specifically discloses a bismuth titanate powder filled polyvinyl fluoride composite piezoelectric film and a preparation method thereof. The preparation method comprises the steps of raw material preparation, preparation of a PVDF composite solvent system, addition and uniform dispersion of fillers, blade coating, low-temperature vacuum drying and stripping. The application realizes the uniform dispersion of bismuth titanate powder or manganese and niobium co-doped bismuth titanate powder in a PVDF matrix by optimizing the ratio of a DMF and acetone composite solvent system, adopting a combined ultrasonic dispersion mode, and introducing a blade coating film forming process and a low-temperature rapid vacuum drying process. Meanwhile, the mass ratio of raw materials is precisely controlled. On the basis of simplifying the preparation process and shortening the film forming period, the piezoelectric performance and structural compactness of the composite film are improved, and the defects of the existing preparation method, such as uneven filler dispersion, insufficient flexibility, low film forming efficiency, and limited improvement of the piezoelectric performance of the film, are solved.

The present invention relates to a lanthanum, vanadium, and iron co-doped bismuth titanate layered perovskite thin film, a preparation method, and an application. The method includes the following steps: S1. Mix bismuth nitrate pentahydrate, lanthanum nitrate hexahydrate, tetrabutyl titanate, vanadyl acetylacetonate, iron nitrate nonahydrate, ethylene glycol monomethyl ether, acetic acid, and a chelating agent to obtain a Bi 3.25 La 0.75 Ti 3‑2x V x Fe x O 12 (BLTVF) sol, where 0 < x < 0.5; S2. Coat the BLTVF sol on a substrate to obtain a wet film; S3. Perform pyrolysis and annealing treatment on the wet film in air; S4. Repeat steps S2 and S3 to obtain a lanthanum, vanadium, and iron element co-doped Bi 3.25 La 0.75 Ti 3‑2x V x Fe x O 12 thin film. The present invention has significantly improved the energy storage performance and energy storage efficiency of the thin film on the Pt / Ti / SiO2 / Si substrate; the preparation method is extremely simple, the content of the added elements is flexibly controllable, the success rate of thin film preparation is high, and the repeatability is good; only simple processes and low-cost equipment are required, and the environmental requirements are simple, which is suitable for batch production.

The application discloses metal-doped p-type nano-bismuth titanate and a preparation method thereof, and belongs to the field of nano-catalytic materials. First, titanium dioxide, bismuth oxide and a precursor of a doping metal are fully mixed through ball milling, and then high-temperature calcination is carried out in a muffle furnace, so that metal-doped p-type nano-bismuth titanate is obtained after cooling. The method has the advantages of simplicity, controllability, good reproducibility, low cost and suitability for industrialized and efficient production.

The application discloses a cerium-chromium-bismuth titanate-based high-temperature piezoelectric ceramic material and a preparation method thereof, and relates to the technical field of high-temperature piezoelectric ceramic materials. The cerium-chromium-bismuth titanate-based high-temperature piezoelectric ceramic material and the preparation method thereof have the following material: 0.5-10% of cerium and chromium account for the total weight, and 67-99.6% of bismuth titanate account for the total weight; the composition of the material is Bi 4‑x Ce x Ti 2.98 Cr 0.02 O 12 The application takes Bi4Ti3O 12 as a matrix, introduces Ce 4+ / Cr 3+ , successfully prepares the piezoelectric ceramic with high Curie temperature and good temperature stability, and simultaneously obtains excellent piezoelectric performance (d 33 ~19.5pC / N) through component regulation and process optimization, and further development of the high-temperature piezoelectric ceramic is promoted.

The application provides a silver-loaded nanometer fluorine-doped bismuth titanate, which is prepared by loading silver nanoparticles on nanometer fluorine-doped bismuth titanate. As a photocatalyst for degrading organic pollutants, the silver-loaded nanometer fluorine-doped bismuth titanate has good stability, can be recycled, and has a service life effectively prolonged as a photocatalyst, and is beneficial to application in actual production.

The invention relates to a sodium niobate-lithium bismuth titanate-ternary multilayer energy storage ceramic capacitor and a preparation method thereof, and belongs to the field of functional ceramic materials. The chemical formula of the energy storage ceramic is (0.68-x) NaNbO3-0. 32 (Bi0. 5Li0. 5) TiO3-xABO3, x represents molar percentage, the value of x meets electric neutrality, x is more than 0 and less than or equal to 0.05, an A-site ion in the third-element ABO3 is one of Na < + >, Bi < 3 + >, Li < + > and Ba < 2 + >, and a B-site ion in the third-element ABO3 is one of Nb < 5 + >, Ti < 4 + > and Zr < 4 + >. When an electric field of 15 kV / mm is externally applied, the energy storage density of 0.99 J / cm < 3 > and the energy storage efficiency of 90.37% are obtained by the multilayer energy storage ceramic capacitor.

The invention provides a biological scaffold with a piezoelectric effect as well as a preparation method and application of the biological scaffold. According to the invention, bismuth titanate (Bi4Ti3O12) nanosheets with excellent piezoelectric properties are compounded with poly-L-lactic acid (PLLA) with better biocompatibility through an electrostatic spinning technology for the first time, a novel bionic nervous tissue engineering scaffold is developed, the scaffold has degradability and excellent biocompatibility and safety, the flexibility of the scaffold is improved, and the scaffold can be applied to the field of biological engineering. The defects of high inherent hardness, high brittleness, non-degradability and cytotoxicity of an inorganic piezoelectric material are overcome. The PLLA / Bi4Ti3O12 composite scaffold provided by the invention can significantly promote neuronal differentiation of neural stem cells, inhibits directional differentiation of glial cell lineages while enhancing neuronal differentiation, can be used as an advanced nerve regeneration interface in nervous tissue engineering, provides a very potential strategy for neural circuit reconstruction and functional recovery, and has a wide application prospect. And a new direction is developed for neural restoration and treatment of neurodegenerative diseases.

The invention provides a preparation method of a titanium dioxide / bismuth titanate thin film composite material and application of the titanium dioxide / bismuth titanate thin film composite material in photoelectrocatalytic hydrogen evolution, firstly, TiO2 nanotubes grow on a Ti substrate through an anodic oxidation method, then Bi4Ti3O12 grows on the surface of TiO2 in situ in a mode of combining continuous ion layer adsorption and a solid phase method, and a TiO2 / Bi4Ti3O12 composite thin film is obtained. The photoanode shows high-efficiency photoelectrocatalysis water decomposition hydrogen production performance in a neutral electrolyte, and keeps good stability in a 10-hour photocurrent response test. According to the invention, through the synergistic effect of the SILAR and the solid phase method, the II-type heterojunction structure is effectively constructed. According to the structure, separation and transmission of photo-induced electron-hole pairs are remarkably promoted, the photoelectrochemical performance and stability of the photo-anode are improved, meanwhile, the method has the advantages of being simple in process, green in synthesis, low in cost and the like, and the prepared photo-anode has wide application prospects in the fields of photoelectrocatalysis water decomposition, environmental pollutant degradation and the like.

This invention belongs to the field of nanocomposite materials and spectroscopic detection technology. This invention discloses an Ag / Co-Bi4Ti3O... 12 Composite SERS substrate, its preparation method, and its application in the detection of crystal violet molecules in water: First, cobalt-doped bismuth titanate (Co-Bi4Ti3O) was prepared using a hydrothermal-calcination method. 12 Ag / Co-Bi4Ti3O was prepared by loading silver nanoparticles onto the surface of a carrier using sodium citrate as a reducing agent. 12 Composite SERS substrate. This invention utilizes cobalt doping to modify and optimize Bi4Ti3O. 12 By combining the electromagnetic enhancement effect of localized surface plasmon resonance of silver nanoparticles with the chemical enhancement effect of semiconductor charge transfer, a dual synergistic SERS enhancement system is constructed, solving the problems of weak enhancement effect of traditional SERS substrates, easy aggregation of silver particles, and poor detection uniformity and cycling stability. This enables ultra-trace, rapid, and highly sensitive Raman detection of crystal violet in water.

The invention discloses a preparation method of a flaky Nb element doped and modified bismuth titanate catalyst material, which comprises the following steps of: 1, weighing bismuth oxide, titanium dioxide and niobium pentoxide according to the molar ratio of Bi to Ti to Nb in the chemical formula Bi4Ti (3-x) NbxO12 (0.15 < = x < = 0.40); 2, according to the mass ratio of the raw materials in the step 1 to the fused salt, the fused salt and the raw materials in the step 1 are mixed and then put into a crucible to be fully ground, and a mixture is obtained; 3, putting the mixture prepared in the step 2 into a muffle furnace for firing, and cooling to obtain a faint yellow product; and 4, washing the faint yellow product prepared in the step 3 with deionized water, filtering, and drying to obtain flaky Nb element doped bismuth titanate catalyst powder. According to the technology, the structural uniformity, the defect concentration and the piezoelectric response activity of the material can be remarkably improved, the energy consumption and the time cost are greatly reduced, an efficient path is provided for large-scale production of high-performance catalysts, and wide market prospects are achieved.

The application provides a zirconium titanate strontium bismuth-based ceramic material with high energy storage density and a preparation method thereof, and relates to the technical field of ceramic capacitor material processing. 0.88 Bi 0.08 Ti 1‑x Zr x O3, and 0<=x<=1, and the preparation process of the ceramic material mainly comprises the steps of raw material preparation, ball milling, pre-sintering ball milling, forming treatment and the like. The application introduces a wide-band-gap oxide on the basis of adding Bi elements, overcomes the defects of the prior art, and the prepared ceramic material has full grains and is densely stacked. The energy storage performance of the ceramic prepared under the prior art is improved to 5.97 J / cm 3 , and in addition, the energy storage density is stable within the temperature range of 30-180 DEG C at ±5%, and can be applied to high-temperature environment energy storage devices.