106results about How to "Strong light absorbing ability" patented technology

The invention relates to an inorganic iron oxide black pigment, in particular to a heat-resistant iron oxide black pigment (manganese ferrite black) and the preparation method thereof. The heat-resistant iron oxide black pigment comprises manganese ferrite black prepared from ferroferric oxide and manganese oxide by high-temperature lattice reaction, wherein the molar ratio of iron element to manganese pigment in the pigment is 1.5:1 to 5:1. The heat-resistant iron oxide black pigment has high heat resistance up to 700 DEG C or above, and can be widely used for ceramic, engineering plastic, color sand, etc., for products manufactured at high temperature, and for coloring agent for products. Meanwhile, the inorganic iron oxide black pigment has the advantages of high acid resistance, high alkali resistance and high light absorbability.

The invention relates to environmental protection paint, in particular to nano shell powder ecological functional flatly painted coating. The coating is prepared from shell powder (calcined), ash-calcium, kaolin, heavy calcium carbonate, hydrated magnesium silicate, titanium dioxide, vinyl acetate, hydroxyethyl cellulose, polyving akohol, polydimethylsiloxane, a water reducer and a defoamer. The coating solves the problem that indoor ornament or decoration paint is not environment-friendly. The coating has the characteristics that the coating is antifungal, purifies the air, prevents mildew, adopts a spiral pore structure, is 3.0mm in press coating thickness and high in glossiness, does not has obvious color aberration, is resistant to shock, abrasion, water, high and low temperature weather and aging, and ensures that the service life of a product reaches more than 20 years.

The invention discloses a preparation method of black iron oxide particles with corrosion inhibition performance. The method comprises the following steps of: dissolving urotropin, ethyl hydroxy ethylcellulose and lauryl sodium sulfate in deionized water according to the definite weight ratio, thereby obtaining a viscous liquid; putting black iron oxide into a granulating machine for granulating while evenly spraying the viscous liquid onto the black iron oxide powder at the same time, thereby forming small black iron oxide particles; and drying and screening the small black iron oxide particles, thereby obtaining a finished product. According to the method, the black iron oxide is modified by the urotropin and other components, so that the corrosion inhibition performance of the black iron oxide is enhanced; and the liquidity and the dispersibility of a black iron oxide pigment are realized. The produced black iron oxide has the characteristics of being excellent in temperature resistance, good in acid and alkali resistance, strong in light absorption, high in tinting strength, good in compatibility and dispersibility and the like, thereby being wide in market prospect.

The invention relates to a sensing material for detecting the halogenated hydrocarbon, which is characterized in that the center is the divalent platinum; the two ligands coordinated with the platinum are 2-phenylpyridine; and simultaneously, the phenyl is provided with the aryl substituent. The sensing material comprises platinum, 2-phenylpyridine ligands and aryl on the phenyl or oligomer and polymer further constructed by aryl. The aryl comprises the further constructed oligomer or polymer as well as ramification of aryl. The detection method is realized through detecting the change of the fluorescence intensity of the luminescent material by using fluorescence means. The provided luminescent material is applicable to the detection of the volatile halogenated hydrocarbon.

The invention discloses a direct laser drilling method for processing a blind hole of a circuit board and aims to provide a laser drilling method which has the advantages that the minimum-value aperture of the processed blind hole reaches 0.002 inch, i.e. 50[mu]m, and the laser drilling production efficiency is relatively high. The production process is improved so as to be more simplified, and the modified process comprises laminating, copper etching and thinning, blackening and laser drilling, wherein the copper etching and thinning process is characterized in that a mixed solution of hydrogen peroxide and sulfuric acid is utilized for thinning and etching a copper layer of a laminated product from the general thickness of about 18[mu]m to the thickness of 4-6[mu]m, and the blackening process is characterized in that the surface of the copper is treated to enable the surface to form a layer of black copper oxide film. Due to the adoption of the copper etching and thinning method, the laser output quantity is reduced, and the smaller processing aperture can be obtained; and the blackening treatment can be used for effectively absorbing laser emitted by a laser drilling machine, so that the waste of light sources is reduced, and the laser drilling efficiency is improved.

The invention belongs to the technical field of visible light curing, and particularly relates to a visible light initiating system capable of initiating free radical / cation polymerization. The system comprises the following components in parts by weight: 0.5-1 part of an integral photosensitizer as a first component, 0.5-1 part of a coinitiator as a second component and 1-3 parts of a photosensitive synergist as a third component, wherein the formula of the integral photosensitizer is shown in the description; the coinitiator is one of fatty amine and aromatic amine derivative; the photosensitive synergist is one of iodonium salt, sulfonium salt and phosphonium salt. Compared with the common reported visible light initiating system, the visible light initiating system has the advantages that the light sensitive wave band is longer, the light absorption capability is stronger, the molecular structure is simple, the preparation is easy, the cost is low, and the visible light initiating system has good compatibility with hydrophobic light-cured resin, can effectively initiate free radical / cation photopolymerization, and has industrialized application potential.

The invention discloses a modified carbon quantum dot loaded hollow tubular carbon nitride photocatalyst and a preparation method thereof. The photocatalyst takes hollow tubular carbon nitride as a carrier and is loaded with modified carbon quantum dots; urea and melamine with a mole ratio of 1-5:1 are used to prepare the hollow tubular carbon nitride through hydrothermal and calcination. The preparation method comprises the following steps of: mixing hollow tubular carbon nitride, water and modified carbon quantum dot solution, and drying to obtain the photocatalyst. The photocatalyst has the advantages of large specific surface area, large number of pores, multiple active sites, high speed of separation and migration of photo-generated carriers, strong light absorption capacity, high photocatalytic activity, high stability, high photocatalytic efficiency and the like; the preparation method of the photocatalyst has the advantages of convenience in synthesis, simplicity in operation,no secondary pollution to the environment and the like. The photocatalyst can be widely used for treating organic pollutants in the environment and killing harmful microorganisms in the environment,and has good application value and application prospect.

The invention discloses a fish scale tubular carbon nitride composite heterojunction photocatalyst as well as a preparation method and application thereof. The catalyst takes fish scale tubular carbon nitride as a framework, and the surface of the catalyst is modified with ZnIn2S4 with the mass percentage of less than or equal to 50%. The preparation method comprises the following steps of sequentially adding ZnCl2, InCl3 and thioacetamide into a suspension of fish scale tubular carbon nitride and water, and carrying out hydrothermal reaction on an obtained precursor solution to obtain the catalyst. The fish scale tubular carbon nitride composite heterojunction photocatalyst has the advantages of strong light absorption capability, low photo-induced electron-hole recombination rate, good photocatalytic performance, good stability and the like, is a novel carbon nitride photocatalytic material, can be widely used for photocatalytic removal of organic pollutants and preparation of H2O2, has a good application prospect. The preparation method has the advantages of simple process, easily controllable conditions, low cost and the like, is suitable for large-scale industrial production, and is beneficial to industrial application.

The invention discloses an ionic rare-earth complex luminescent material, a preparation method therefor and application therefor. The structural formula of the rare-earth complex is [Ln(ND)4]M, wherein ND is a 4-hydroxyl-1,5-naphthyridine anionic ligand; Ln represents rare earth ions comprising yttrium, lanthanum, europium, gadolinium, terbium, ytterbium ions; M is counter cations comprising alkali metal ions, alkyl substituted quaternary ammonium ions, alkyl substituted quaternary phosphonium ions, l,3-dialkyl substituted imidazolium ions and N-alkyl substituted pyridinium ions. According to the europium complex provided by the invention, the ligand is hardly dissociated and the complex is high in thermal decomposition temperature; furthermore, the europium complex further has a high-efficiency photoluminescent quantum yield and good resistance to ultraviolet light, and can be used as photoluminescent and electroluminescent materials.

The invention relates to thiophene and pyrazine derivatives and a preparation method thereof, belonging to the field of organic electroluminescent materials. The derivatives are prepared by forming a molecular luminous core by centrosymmetrically connecting thiophene and pyrazine with four benzene rings, connecting functional groups of different structures and different conjugated degrees with the periphery of the core so that the red fluorescent molecules have charge-transmitting capability and can be used as a main red luminous material in the field of organic electroluminescence. The synthesis method comprises the following steps of: using 2,5-dibromothiophene as a raw material; nitrifying, carrying out C-C coupling with bromobenzene boric acid; reducing nitro groups; synthesizing a thiophene and pyrazine core with four peripheral bromines periphery together with 4,4'-dibromo benzyl; and then, carrying out C-N, C-C coupling reactions with arylamine, and the like or introducing acetylene groups to the periphery of the core and carrying out Diels-Alder cycloaddition with cyclopentadiene ketene with functional substituted groups to prepare target derivatives. The derivatives have strong absorption capability in an ultraviolet-visible light region, the dilute solution thereof emits strong fluorescence, and luminous peaks are between 600nm and 650nm.

The invention belongs to the fields of a novel material, a novel energy and a semiconductor, and especially relates to a carbon-coated iron-doped zinc oxide (ZnO: Fe) and a rapid synthetic method. The method comprises the following steps: weighting soluble zinc salt, ferric salt, an organic fuel and a combustion auxiliary agent to prepare an aqueous solution, stirring and dissolving to obtain a transparent solution; heating the solution to 50-100 DEG C, continuously drying to a viscous gel state; heating the gel to 180-290 DEG C, generating self-propagating combustion on gel to obtain black loosening powder; adding the obtained powder in the solvent, and cleaning and drying to obtain the high-purity object material. The obtained ZnO: Fe has high crystallization quality and strong light absorption capacity, is expected to be used in the fields of high efficiency photocatalysis, photodetection, solar energy battery and dilute magnetic semiconductor devices; the black carbon enhances conductive capability, and the carbon-coated iron-doped zinc oxide can be used in a lithium ion battery and a super capacitor. The method has the advantages of low technical cost, prevention of conventional multi-step complex process, long technology period and expensive equipment, and is suitable for industrial large-scale production.

The invention provides visible-light response type photocatalyst, which has a chemical formula of CaIn2S4. The preparation method comprises the following steps of: fully mixing soluble calcium salt, soluble indium salt, thiacetamide and de-ionized water to obtain mixed solution; carrying out hydrothermal reaction to the mixed solution under the heating condition; filtering and drying to obtain powder; under the oxygen isolation condition, heating the powder; and after the temperature is kept, obtaining the visible-light response type photocatalyst. The visible-light response type photocatalyst prepared by the invention has a strong light adsorption capacity in the visible optical band, and organic dye can be effectively degraded under the visible light condition. The structure and the catalytic stability of the visible-light response type photocatalyst are high, the structure of the visible-light response type photocatalyst is not changed along with time extension, and the catalytic stability of the visible-light response type photocatalyst still can be kept at a high level. In addition, a hydrothermal reaction method is adopted by the visible-light response type photocatalyst, raw materials can be evenly mixed in a molecular level, and the visible-light response type photocatalyst has the advantages of low synthesis temperature, low impurity content, simple preparation technology, short time and low cost.

The invention discloses a double-donor aromatic amine photosensitizer, structurally characterized by having an aromatic amine double-donor conjugated group and a structurally general formula shown as I. Compared with commonly reported visible light initiating systems, this photosensitizer has high absorbability in a visible light area, is simple to synthesize, is applicable to visible LED light source free radicals and cationic curing systems and has application potential.

The invention discloses a method for removing dye pollutants by utilizing a silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst. According to the method, the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst is utilized to catalytically treat the dye pollutants, wherein the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst comprises carbon nitride,sulfur-doped carbon nitride is formed by doping sulfur elements into the carbon nitride and the surface of the sulfur-doped carbon nitride is modified with silver chromate. According to the invention,the dye pollutants can be degraded into carbon dioxide and water, in the manner of adopting the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst for catalytically treating the dye pollutants, so as to realize the effective removal of the dye pollutants. The method disclosed by the invention has the advantages of simple process, convenience in operation, high treating efficiency,excellent removing effect, and the like, has high application value and wide application scope and is suitable for large-scale application.

The invention relates to a shallow water tray combination and a cultivating method of the shallow water tray combination, in particularly relates to the shallow water tray combination for tobacco seedling cultivating and the cultivating method of the shallow water tray combination. The shallow water tray combination for the tobacco seedling cultivating comprises holding trays and seedling trays, wherein each holding tray is of a cuboid shallow water slot structure; at least two seedling trays are placed in each holding tray; a grabbing groove is formed in the middle position of each upper edge; the grabbing groove is formed in the middle position of each upper edge of each seedling tray; a water adsorbing hole is formed in the middle position of the bottom face of each seedling tray; a cambered chamfer is arranged at the lower edge of each water adsorbing hole; a semicircular notch is formed in the middle position of each edge at an upper bore of a seedling slot. The seedling cultivating method comprises seven steps, wherein after a culture solution in each holding tray is basically dried, the culture solution is added to 1 / 4 height of the holding tray, and the step is performed repeatedly in sequence. The shallow water tray combination and the cultivating method thereof have the beneficial effects that the root systems of the cultivated tobacco seedlings are well-developed, and tobacco seedlings are high in overall quality and strong in stress resistance; after being planted into big fields, the tobacco seedlings adapt to the external environment fast; the seedling returning and growing speed is fast.

The invention discloses a preparation method of superfine easily-dispersed black iron oxide. In the method, black iron oxide prepared by using a sodium hydroxide oxidation method is adopted, and an undried black iron oxide filter cake is directly used. The preparation method comprises the following steps of: adding dimethicone, calcium lignosulfonate and propylene glycol, wherein the weights of the dimethicone, the calcium lignosulfonate and the propylene glycol are respectively 2-3%, 1.5-2.5% and 1-2% of that of the black iron oxide filter cake; grinding at high speed of 2000-3000rpm for 10-15min; taking out the powder and drying; then, adding a proper amount of water and pulping for 20-25min to prepare slurry with the concentration of 45-55%; adding zinc phosphate, sodium lauryl sulfate and nanosilicon dioxide, wherein the weights of the zinc phosphate, the sodium lauryl sulfate and the nanosilicon dioxide are respectivley 0.3-0.4%, 0.15-0.25% and 0.2-0.3% of that of the slurry; stirring the mixture for 30-40min; grinding the mixture into slurry by using a colloid mill until the particle size is smaller than 45mum; and drying and powdering to obtain a finished product. The preparation method disclosed by the invention not only can be used for improving the surface states of crystals of black iron oxide particles and increasing the fineness of the black iron oxide, but also can be used for improving the dispersibility of a black iron oxide pigment.

The invention discloses a silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst and a preparation method thereof. The silver phosphate / bismuth sulfide / bismuth oxide double-Z-typephotocatalyst takes bismuth oxide as a carrier, and the surface of the bismuth oxide is modified by bismuth sulfide and silver phosphate. The preparation method includes the steps: preparing mixed solution of bismuth oxide and thiourea; performing hydrothermal reaction on the mixed solution of the bismuth oxide and the thiourea to prepare a bismuth sulfide / bismuth oxide compound; mixing the bismuth sulfide / bismuth oxide compound and Ag+ solution, and adding HPO4<2-> solution to perform precipitation reaction to prepare the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst. The silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst has the advantages of high absorption capacity, low light-generated electron-hole recombination rate, good photocatalytic performance and stability and the like. The photocatalyst is a novel photocatalytic material, and the preparation method of the photocatalyst has the advantages of simple process, easily controlled condition, low cost and the like and is suitable for large-scale industrial production.

The invention discloses a method for preparing oxidation-resisting iron oxide black granules. The method comprises the following specific steps of: dissolving a silane coupling agent KH570, catechol and Span-80 into deionized water according to a certain weight ratio, so as to obtain viscous liquid; adding an antioxidant 1010 and carbon black to the obtained viscous liquid so as to carry out modification; and adding iron oxide black to a granulator for granulation while uniformly spraying the modified viscous liquid to iron oxide black powder, so as to form small iron oxide black granules, drying and sieving, thereby obtaining finished products. The iron oxide black granules prepared by the method have the characteristics of excellent temperature resistance, good acid resistance, good oxidation resistance, strong light absorption, high coloring power, good compatibility, good dispersion and the like and have huge market prospects.

The invention belongs to the fields of material preparation and environmental treatment, particularly relates to a preparation method of a black Bi4Ti3O12 material and application thereof. According to the preparation method of the black Bi4Ti3O12 material and the application thereof, the black Bi4Ti3O12 material is successfully prepared by a traditional molten salt method and a reduction method.The preparation method comprises specific steps: firstly, bismuth oxide, sodium chloride, potassium chloride and titanium dioxide are ground and then placed in a muffle furnace to be calcined to obtain a Bi4Ti3O12 material; then the Bi4Ti3O12 material is ground with sodium borohydride and calcined in a tube furnace to obtain the black Bi4Ti3O12 material. Photocatalytic degradation of tetracyclineby the black Bi4Ti3O12 material is also tested. The preparation method adopted by the invention is simple and avoids existence of instability factors of coupling, loading and other modification methods, and is expected to be applied to industrial production. In addition, the black Bi4Ti3O12 material exhibits good catalytic degradation under visible light.

The invention discloses a tourmaline / manganese dioxide composite cathode used for a deposition-type microbial fuel cell and a manufacturing method thereof and belongs to the microbial fuel cell field.In the invention, problems of high manufacturing cost, a complex manufacturing process and low productivity efficiency of the cathode in an existing deposition-type microbial fuel cell are solved. The composite cathode is manufactured by bonding an activated carbon layer and tourmaline / manganese dioxide through PTFE. The obtained tourmaline / manganese dioxide composite cathode is high in productivity effect, low in manufacturing cost, simple in preparation and manufacturing process, short in consumed time and is good for expanded production of the cathode.

The invention relates to the field of water treatment, and especially relates to a silver phosphate / hydrothermal biocarbon composite photocatalyst and a preparation method and an application thereof.The silver phosphate / hydrothermal biocarbon composite photocatalyst provided by the invention includes hydrothermal biocarbon and silver phosphate dispersed on the surface of the hydrothermal biocarbon. According to the silver phosphate / hydrothermal biocarbon composite photocatalyst and the preparation method and the application thereof, the biocarbon prepared by a hydrothermal method is used as acarrier, and has rich gaps and oxygen-containing functional groups, after being combined with the silver phosphate, the hydrothermal biocarbon changes a crystal form structure of the silver phosphate, which is beneficial to adsorb pollutants; and the separation efficiency of photoelectron-hole in the photocatalyst is accelerated, the stability during an application process is increased, and the photocatalytic performance is improved. Results show that the silver phosphate / hydrothermal biocarbon composite photocatalyst of the invention has the advantages of strong light absorption capability,low recombination rate of the photoelectron-hole, good photocatalytic performance, good stability, and the like, can be used for photocatalytic removal of antibiotics in polluted water bodies, and hasgood cycle stability.

A disclosed production method for high-dispersity iron oxide black comprises: preparing iron oxide black by employing a sodium hydroxide oxidation process, adding 4-8% by weight ofsodium hexametaphosphate and 1-2% by weight of fatty acid polyethylene glycol ester, performing high-speed grinding at a speed of 2000-3000 rpm for 10-15 min, taking out and baking, adding proper amount of water and beating for 20-25 min, so as to prepare a slurry with the concentration of 45-55%, adding 2-butyne-1,4-diol accounting for 0.2-0.3% by weight of the slurry, aluminum nitride accounting for 0.2-0.3% by weight of the slurry, and vanadium boride accounting for 0.3-0.4% by weight of the slurry, stirring for 20-30 min, grinding the slurry by a colloid mill to have the particle size less than 50 mu m, baking and beating to form a powder, so as to obtain the finished product. By firstly employing sodium hexametaphosphate and fatty acid polyethylene glycol ester respectively as an organic dispersant and an inorganic dispersant for processing the surface of iron oxide black, the dispersibility of iron oxide black is increased, and the usage occasion and the purposes of iron oxide black are substantially expanded.

The invention relates to a novel gel-coating resin, which is characterized in that the novel gel-coating resin is prepared from the following materials in parts by weight: 100 parts of epoxy resin, 0.01-0.05 part of carbon black, 2-15 parts of gas-phased SiO2 and 100-115 parts of aluminum powder. According to the invention, the strength, the coefficient of elongation and the abrasive resistance of the resin are effectively improved, the smoothness of material surfaces is improved, the anti-ageing performance is increased and the heat resistance is improved. In the invention, convenience for quality control in actual production is brought: uneven parts on the surface of a mould are easy to find by black lamplights. A method provided by the invention is safe and simple in the whole manufacturing process; and meanwhile, the cost of the gel-coating resin is greatly reduced and contributions to a glass fiber reinforced plastic industry are made to some extent.

The invention discloses a black iron oxide pigment and a preparation method thereof. The method comprises the following steps: (1) a ferrous sulfate raw material and manganese salt are mixed, an alkaline solution is then added to adjust the pH to be 10-11, a heating reaction is performed until a material liquid is sufficiently reacted; (2) a silicate solution is added to the material liquid in the step (1), the temperature is kept at 70-90 DEG C, the pH value is 9-11, a reaction is performed for 30-60 min, the pH value is adjusted to be 6-8, and a thermal-insulation reaction is performed for 30-60 min; (3) a product after the reaction is rinsed, dried, ground and then calcined at a high temperature, and the black iron oxide pigment is obtained. The high-temperature-resistant black iron oxide prepared with the method has the advantages that resistance to temperature of 700 DEG C or higher can be realized, the maximum temperature can exceed 1200 DEG C, and the black iron oxide pigment also has characteristics of quite good acid resistance, alkali resistance, high light-absorbing property and the like, therefore, the application range of black iron oxide is greatly broadened.

The invention relates to a flexible rare earth transparent luminescent film applied to a silicon-based solar cell and a preparation method thereof. The composition of the film comprises a rare earth complex and a polymer matrix material (PMMA); wherein the mass ratio of rare earth complex: PMMA is 1: 40-60; and the rare earth complex is Ln(L1)3(L2)1, Ln is a rare earth element, L1 is a first organic ligand, L2 is a second organic ligand, and L1 and L2 are different; wherein the rare earth element Ln is specifically one or more of Eu, Tb and Yb. The preparation method is simple and rapid, and the flexible rare earth transparent luminescent film is 20-30 or more times larger than the film in the conventional work. The size of the film provides a good foundation for further improving the utilization of sunlight and promoting the large-scale use of the silicon-based solar cell.

The invention provides an acylphosphine photoinitiator of which the chemical structural formula is shown as a formula (I), and also provides a preparation method of the acylphosphine photoinitiator, which comprises the following steps: (1) putting aryl phosphine dichloride or derivatives thereof, aromatic hydrocarbon or derivatives thereof and a catalyst into a reaction flask to obtain a complex of diarylphosphine chloride and the catalyst; (2) slowly dropwise adding the mixture obtained in the step (1) into water, continuously reacting, adding an extraction agent for extraction, and separating out an organic layer for later use; (3) putting the obtained organic layer into the reaction flask, and putting aromatic aldehyde or derivatives thereof at 10-25 DEG C for reaction; and (4) adding acatalyst and an oxidant into the reaction solution obtained in the step (3) at a certain temperature to prepare the acylphosphine photoinitiator. The phenyl ring on the phosphonyl side in the acylphosphine initiator structure is subjected to structural modification for the first time, the reaction conditions are mild, the treatment process is simple, and the method is green and environmentally friendly.

The invention discloses a method for catalytic removal of antibiotic by a silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst. According to the method, the antibiotic is treatedby the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst, the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst takes bismuth oxide as a carrier, andthe surface of the bismuth oxide is modified by bismuth sulfide and silver phosphate. According to the method, photocatalytic degradation is implemented by the aid of the silver phosphate / bismuth sulfide / bismuth oxide double-Z-type photocatalyst, different types of antibiotic can be effectively removed, and the method has the advantages of simple process, low processing cost, good removing effect, high safety, no secondary pollution and the like. Particularly, the method can efficiently remove antibiotic in water and has excellent practical application prospects.

The invention discloses a tantalum oxide chlorine micron cubic crystal photocatalyst as well as a preparation method and application thereof. The preparation process comprises the following steps: dissolving Ta5+ tantalate in a mixed solution of concentrated hydrochloric acid and carboxylic acid, wherein the molar ratio of HCL to carboxylic acid is 1:(1.4-5.6); performing hydrolysis reaction on the mixed solution containing tantalate at a temperature of 100-240 C degree for 3-18 hours; cooling naturally, filtering and collecting precipitate and drying to obtain the tantalum oxide chlorine micron cubic crystal. The preparation method is simple, moderate in reaction and good in repeatability and can be widely applied to preparation of a single crystal structure of metal oxide of which the precursor is hydrolyzed rapidly; the micron cubic crystal is high in crystallization degree, strong in light absorption ability, high in charge migration efficiency and has a relatively strong photocatalytic hydrogen generation ability and a wide application prospect in the field of solar energy utilization and photochemistry conversion.

The invention discloses a high-light-absorption high-heat-conductivity fatty acid / nano complex modified vermiculite composite phase-change energy storage material and a preparation method thereof. Thepreparation method comprises the following steps: by taking modified vermiculite with a TiO2-TiC-C or SiO2-SiC-C nano complex as a supporting substrate, adding a molten unitary fatty acid or multielement fatty acid eutectic mixture, and implementing a vacuum soaking and adsorption method, thereby obtaining the high-light-absorption high-heat-conductivity fatty acid / nano complex modified vermiculite composite phase-change energy storage material. By adopting the preparation method disclosed by the invention, the problem that a conventional phase-change energy storage material is low in phase-change enthalpy value and low in heat conduction coefficient can be solved, the prepared composite phase-change energy storage material is capable of achieving light-heat conversion rapidly under radiation of sunshine and can be used as a heat source, the phase-change temperature of the material can be adjusted and controlled through types and mass ratios of fatty acids, and thus the material has good application values in fields such as heat energy storage and solar energy conversion.