200results about How to "The reaction process is easy to control" patented technology

The invention relates to a chemical method for in-situ large-area controlled synthesis of a perovskite type CH3NH3PBI3 membrane material based on a lead simple-substance membrane. The method comprises: sputtering the lead simple-substance membrane on the surface of a substrate, then horizontally immersing the substrate material possessing the lead simple-substance membrane in an organic solution containing a simple substance iodine and iodinated methylamine, and performing a constant-temperature reaction to prepare a CH3NH3PBI3 membrane material in situ; or putting the substrate possessing the lead simple-substance membrane in a steam atmosphere of a simple substance iodine to perform iodination to generate a lead iodide membrane, then immersing in an organic solution containing iodinated methylamine, and performing a constant-temperature reaction to prepare the CH3NH3PBI3 membrane material in situ. The method is simple in operation, low in energy consumption and low in cost, and has wide industrial application prospect. The obtained CH3NH3PBI3 membrane is high in purity, uniform in membrane-surface crystal and excellent in crystallinity.

The invention discloses a cubic phase cerium and zirconium based composite oxide with high specific surface area. Rare earth elements are doped in the cerium-zirconium composite oxide and are selected from two or three of Pr, Nd and La, wherein the molar ratio of Zr to Ce is (1.8-2.5):1; the molar ratio of Pr to Ce is (0-0.32):1; the molar ratio of Nd to Ce is (0-0.32):1; the molar ratio of La toCe is (0-0.16):1; and the cerium and zirconium based composite oxide exists in a form of cerium-zirconium solid solution. The invention also discloses a preparation method of the cerium and zirconiumbased composite oxide. The composite oxide is prepared through different precursor precipitating and drying methods; the method has the advantages of simple reaction process and low requirements on drying equipment; the obtained cerium and zirconium based composite oxide has high specific surface area, high thermal stability and high oxygen storage and discharge capacity; and after sintering is performed at the temperature of 1,000 DEG C for 12 hours, the specific surface area is more than 35m<2>/g, particularly more than 60m<2>/g.

The invention provides a preparation method of a nickel-cobalt layered bimetallic hydroxide/graphene electrocatalyst, which belongs to the technical field of electrocatalysts. The method disclosed bythe invention comprises the following steps: graphene and cobalt nitrate are uniformly dispersed in a methanol solvent by ultrasonic waves, so that an ultrasonic solution is obtained; the ultrasonic solution is added into a methanol solution of dimethylimidazole, is uniformly mixed and then is enabled to stand, and centrifuging, washing and drying are then carried out, so that a ZIF-67/graphene composite material is obtained; the ZIF-67/graphene composite material and nickel salt are mixed and dissolved in a solvent, refluxing is carried out for reaction, centrifugal separation is then carriedout, obtained precipitate is washed with absolute ethyl alcohol, and drying is carried out to obtain a NiCo LDH/G composite material with a nanoscale morphology. The method disclosed by the inventionovercomes the defects of high requirement on equipment, need for high temperature and high pressure and need for an expensive surfactant existing in conventional synthesis methods, and compared withthe prior art, the preparation method has the advantages of simple process, low cost, easy reaction process control and the like, and is suitable for industrial mass production.

The present invention discloses a microwave producing method for nano-silver or gold; the reactants are added into the reactor according to the proportion of 1 to 1; the reactants are silver nitrate or auric chloride acid and starch or sodium carboxymethyl cellulose; the reactor is put into a microwave oven; with a mixer of a rotation speed of 100/min and the microwave power of 0.3 Kw, the reaction time of the reactant starch is one hour while the time of the reactant sodium carboxymethyl cellulose is seven hours; the solution is dried by air or vacuum freeze or spraying after the reaction is over to produce nano-silver or gold powder or concentrated to nano-silver or gold colloid of the needed consistency through vacuum concentration. The present invention discards the ordinary reducing agent in thermochemical synthesis and takes the microwave heating to replace the traditional local heating method and realize homogeneous growing of nano-silver or gold; the grain size distribution of the nano-silver and gold is narrow and the grain shapes are regular; the method is widely used in biochemical and antiseptic material field.

The intelligent temperature adjustment textile hydrolyae and polymerize the ethyl-orthosilicate, the absolute ethyl alcohol and the distilled water silicon dioxide network structure gelatin in normal temperature. Then joins the alcohol type changeing material to make bonds change material. Finally mix the bonds change material and bond then spread on the textile's surface. This invention's intelligent temperature adjustment textile is insert change material into the high thermal conductive silicon dioxide's network gelation to make nanometer even micronanometer bonds change material. Then spread the bonds change materialon the textile surface. Thus do not ceeate the oil bath influence on the textile and the bonds change material is stable and has relitave high change enthalpy and sutible temparature adjustment sector. Moreover, the preparation method's technological process is simple, the requests is low, and the reaction process is easy to control.

The invention relates to a preparation method for an iron sucrose bulk drug. The method comprises the following steps: (1) crystallization: the pH value of sucrose solution is adjusted to 1-4 with acetic acid, iron salt solution is added to the sucrose solution to form mixed liquor, the pH value of the mixed liquor is adjusted to 1-3 with Na2CO3 solution, then the mixed liquor is stirred and is continued to be added with the Na2CO3 solution until turbidity appears in the mixed liquor, the pH value of the mixed liquor is adjusted to 4-7, and then the mixed liquor is filtered and added with water to obtain iron cake solution; (2) complexing: the sucrose solution is heated and added with alkaline liquor for alkalization, and then the alkalized sucrose solution is added with the iron cake solution and stands for the night to obtain complexing solution; and (3) refining: the complexing solution after standing for the night is filtered, and the filtrate precipitates with 2-3 times of 95 percent of ethanol and is filtered to obtain the iron sucrose bulk drug. The invention has the advantages of simple process steps, easy control of the reaction processes, good product quality, high yieldand lower production cost and is a high-novelty preparation method for the iron sucrose bulk drug and the injection thereof.

The invention belongs to the field of aerogel material preparation technologies, and relates to a method for preparing a hydrophobic SiO2 aerogel by virtue of normal pressure drying. During the preparation, a two-step method is adopted, an organic silicon source as precursor, water as a hydrolysis agent, absolute ethyl alcohol as a solvent, acid and alkali as catalysts, and an organic silicon solution and a surface modifier. The preparation method comprises the following steps: mixing and stirring the organic silicon source, the water and the absolute ethyl alcohol in proportion, and respectively adding an acid catalyst and an alkaline catalyst by virtue of an acid and alkali two-step method to regulate pH value so as to form gel; performing solvent replacement on the aged gel, carrying out surface hydrophobic modification, replacing a hydrophilic group on the surface of the gel through a hydrophobic group, so that the gel is hydrophobic; finally, performing normal pressure drying to obtain the hydrophobic SiO2 aerogel. The method disclosed by the invention can be used for reducing the preparation cost of the aerogel; moreover, according to a hydrophobicity test, the contact angle can reach about 158 degrees, thereby showing that the hydrophobicity is good.

In the invention, meta-aluminate and soluble glass are used as raw materials to preparate aluminum oxide with high-temp. resistant and high specific surface by techonlogy that using sol-gel process to prepare aluminium oxide humidity gel and using supercritical fluid drying method to prepare aluminum oxide xerogel. The aluminum oxide contains silicon oxide (wt% is 0.1-10), the aluminum oxide xerogel is processed for 4h on 500 deg.c temp., its specific superficial area is more than 365 m2/g, then it is processed for 4h, its specific superfical area is more than 165 m2/g.

The invention discloses a preparation method of nanostructured polypyrrole. The method comprises the steps of using manganese dioxide with a certain nanostructure morphology as a reaction template, carrying out reaction on pyrrole monomer in an acid solution with a pH value of 0-6 at a reaction temperature of -10 to 50 DEG C to obtain polypyrrole, wherein the mole ratio of the pyrrole monomer to manganese dioxide is greater than or equal to 1:2. The polypyrrole has the same nanostructured morphology with manganese dioxide. The method provided by the invention is simple, efficient, green and environment-friendly, has the advantages of high repeatability, controllable reaction process, no need of adding a surfactant with pollution to the environment, and no need of the subsequent process for removing the template; the prepared polypyrrole has the advantages of high purity, high conductivity, and good environmental stability; the multi-dimensions or multilevel structures of the prepared polypyrrole can be controllably obtained through changing the micro morphologies of manganese dioxide; moreover, the prepared polypyrrole can be used in the fields of super capacitors, lithium ion batteries, sensors, field effect transistors, electrochromic displays and the like.

The invention discloses a method to prepare 9-fluorenone with fluorene. Wherein, using dimethyl sulfoxide as solvent, sodium hydroxide as catalyst, oxygen as oxidant and tower filling reactor; cooling and filtering the reacted liquid to obtain 93% coarse fluorenone; distilling liquid and recycling 94% solvent and some coarse fluorenone; refining with oriented crystallization method and obtaining yellow piece 99.8% fluorenone. This method is simple, needs short reaction time, produces no waste water, and convenient to produce in industry.

The invention discloses a preparation method of long-chain semi-aromatic nylon salt. The method comprises the following steps: firstly, respectively dissolving aromatic dibasic acid and long-chain diamine in an organic solvent under the temperature of 60-80 DEG C, then slowly adding the long-chain diamine into aromatic dibasic acid solution to carry out neutral reaction under the temperature of 60-80 DEG C, adjusting pH value to 7.2-7.4, cooling, separating, washing with the organic solvent, and drying to obtain the long-chain semi-aromatic nylon salt. The long-chain semi-aromatic nylon salt prepared by the invention has higher purity, the speed of the neutral reaction can be controlled, and simultaneously the molar ratio of dibasic acid and diamine can be controlled; the neutral reaction temperature of the organic solvent selected by the invention is lower, the obtained long-chain semi-aromatic nylon salt can be partially dissolved in the organic solvent at the neutral reaction temperature, and is not dissolved in the organic solvent under normal temperature, so as to be convenient to adjust the pH value, separate and purify; and the used organic solvent can be used circularly.

The invention relates to a catalyst for eliminating carbon soot particles and nitrogen oxides simultaneously, preparation and application thereof. The catalyst is based upon a MnMgAlO hydrotalcite-based complex oxide catalyst, and potassium serves as an auxiliary active ingredient. The catalyst is prepared by a co-precipitation method with constant pH value; and the catalyst is prepared by the following steps: preparing mixed basic solution and mixed salt solution; dripping the mixed basic solution and the mixed salt solution together; controlling the pH value of precipitate to be 9 to 10 by adjusting the dripping rate; and adjusting the load of the potassium. In the reaction atmosphere of simulated diesel exhaust, the carbon soot particles can be quickly combusted and 27 volume percent of NOx can be removed within a temperature range of the diesel exhaust, and NOx. The catalyst has the advantages of low cost of raw materials, simple preparation process and excellent catalytic effect.

The invention discloses a flower type Ni<3>S<2>/graphene three-dimensional composite electrode material and a preparation method thereof. In the flower type Ni<3>S<2>/graphene three-dimensional composite electrode material, graphene is taken as a substrate, and flower type Ni<3>S<2> particles are uniformly grown on the surface of the graphene. The preparation method of the flower type Ni<3>S<2>/graphene three-dimensional composite electrode material comprises the following steps of uniformly dispersing the graphene, thiourea, nickel acetate tetrahydrate and a three-block polymer F127 in distilled water with ultrasound; carrying out hydrothermal reaction on the obtained solution at 160-200 DEG C; dialyzing the gel-like mixture in the distilled water and then drying the gel-like mixture; and calcining the obtained gel-like solid at a controlled temperature of 750-850 DEG C under the protection of N2, thereby obtaining the black gel-like flower type Ni<3>S<2>/graphene three-dimensional composite electrode material which has high specific capacitance, charging and discharging stability, favorable conductivity and large specific surface area. The flower type Ni<3>S<2>/graphene three-dimensional composite electrode material can be used as an electrode material of a supercapacitor, and the preparation process is simple, and is convenience in operation and high in repeatability.

The invention discloses a method for synthesizing a gamma, delta-nonsaturated ketones compound. The method comprises the following steps: under protection of inert gas, nonsaturated alcohol and 2-alkyloxy propylene are taken as the raw materials, Bronsted acid functional ionic liquid is dissolved in a high boiling solvent as a catalyst, a rearrangement reaction is carried out, after the reaction is complete, the materials is subjected to post-treatment to obtain the gamma, delta-nonsaturated ketones compound and a catalyst solution. The used Bronsted acid functional ionic liquid catalyst has a plurality of physical and chemical properties which are similar with the conventional ionic liquid, the acid functional group is introduced, so that the catalyst has the advantages of high acid site density, adjustable acidity, uniform acidity distribution and difficult loss of acidity. An autoclave series mode is used for realizing the continuous synthesis of nonsaturated ketone and continuous recycling of the catalyst.

The invention discloses application of a beta-diimide bivalent rare earth boron hydrogen complex in catalysis of hydroboration reaction of ketone and boron hydride. Beta-diimide rare earth dichloride and NaBH4 react in a tetrahydrofuran solvent, and in-situ Na/K reduction is carried out, so that the beta-diimide bivalent rare earth boron hydrogen complex, namely [2,6-ipr2-(C6H3)-NC(Me)CHC(Me)N-(C6H3)-2,6-ipr2]Ln-BH4.2THF, is obtained. The beta-diimide bivalent rare earth boron hydrogen complex disclosed by the invention can catalyze the hydroboration reaction of ketone and boron hydride with high activity under mild conditions and has the advantages of short reaction time and mild reaction conditions, and an aftertreatment method is simple and convenient.

The invention discloses a method for preparing a zinc ferrite coated by grapheme. The grapheme coating process is guided by the self-assembly of nano-particles, the zinc ferrite is constituted by the self-assembly of the nano-particles, and the structure of the zinc ferrite is an assembly hollow sphere structure. Ethylene glycol is taken as a solvent, and a graphene oxide nanolayer, ferric chloride, zinc chloride and carbamide are taken as reactants. A dispersed solution is subjected to preheating, so that nano-particles to which graphene oxide is adhered are prepared. The nano-particles are heated for performing solvothermal reaction to enable the nano-particles to be self assembled and enable the graphene oxide to be reduced. After cooling, centrifugal separation, washing and drying, the zinc ferrite coated by grapheme is obtained. The method can be used for preparing a composite coated by the grapheme, wherein the composite coated by the grapheme has the advantages of even coating and controllability of the shape. In addition, the method has the characteristics of simplicity in manufacturing technique, environment friendliness and low cost.

The invention relates to a method for extracting low-molecular-weight lignin from biomass. The preparation method comprises the following steps of (1) preparing an extraction agent: preparing cholinechloride and hydrogen bond donors into a mixed solution at a certain mol mass ratio; then, performing reaction under a certain condition to form a uniform solution, namely the extraction agent; (2) adding the extraction agent into the biomass raw materials; adding catalysts; performing reaction for a certain time under the stirring condition at a certain temperature; performing filtering; adding deionized water; performing precipitation and centrifugation to obtain solid substances; then, cleaning the solid substances by absolute ethyl alcohol and deionized water; performing drying; obtaininga finished product. According to the method, poplar, bamboo-willow, wheat straw and the like are used as the biomass raw materials; the solvent prepared at a specific proportion under the specific conditions is used as the extraction agent for extracting the low-molecular-weight lignin. The method has the advantages that the reaction conditions are mild; the process is simple; green effect and high efficiency are realized; the extraction cost is low; the method is suitable for large-scale production application.

The encapsulating polyurethane material consists of polyether polyol and diphenyl methylene diisocyanate, and the diphenyl methylene diisocyanate is liquefied 4, 4'-diphenyl methylene diisocyanate. The encapsulating polyurethane material as one kind of high strength single component wet cured encapsulating polyurethane material has excellent storage stability, short curing period, convenient use, excellent adhesion and no bubble produced during wet curing. It is suitable for sealing and adhering glass, PVC, PP, ABS and other plastics, especially memory card.

The invention belongs to the technical field of food processing, and discloses a vegetable protein/soybean polysaccharide nano-emulsion embedded with a natural fat-soluble pigment and a preparation method of the vegetable protein/soybean polysaccharide nano-emulsion. The preparation method comprises the following steps: dissolving vegetable acid-soluble protein and soluble soybean polysaccharide into deionized water respectively, stirring for 2 to 3 hours, adjusting the pH values of the stirred solutions I to be 2.0 to 4.0 to obtain a protein stock solution and a polysaccharide stock solution respectively, adding the protein stock solution into the polysaccharide stock solution, mixing to obtain a uniform mixed solution II; dissolving the natural fat-soluble pigment into grease, adding the grease containing the dissolved natural fat-soluble pigment and mogroside into the mixed solution II, and carrying out stirring and homogenizing to obtain an emulsion I; heating the homogenized emulsion I at 80 to 90 DEG C for 0.5 to 1 hour, so as to obtain the vegetable protein/soybean polysaccharide nano-emulsion embedded with the natural fat-soluble pigment. The vegetable protein/soybean polysaccharide nano-emulsion is high in natural pigment content, low in sugar content, small in particle size distribution, and high in stability under an acidic condition, and can be used for development of functional foods and health products.

The invention discloses a method for preparing caster oil-based polyester serving as a PVC (Polyvinyl Chloride) plasticizer, belonging to the technical field of chemical synthesis. The method comprises the following steps: preparing caster oil-based dicarboxylic acid by reacting a down-stream product, namely, ricinoleic acid of low-price bio-based raw caster oil, dihydric anhydride and dihydric alcohol serving as raw materials in two steps: preparing caster oil-based dicarboxylic acid by using ricinoleic acid and dihydric anhydride, and carrying out a polyesterification reaction on the caster oil-based dicarboxylic acid and the dihydric alcohol in the coexistence of a catalyst and a water-carrying agent; and distilling under reduced pressure to obtain the caster oil-based polyester PVC plasticizer. A PVC plastic test piece is prepared by treating the caster oil-based polyester PVC plasticizer, PVC resin and a thermal stabilizer according to a certain formula through a solvent film casting method. The test piece is soft, and is equivalent to a PVC plastic piece plasticized by dioctyl phthalate (DOP) in the transparency under the same condition. The raw material is caster oil-based, recyclable, low in price and independent of petroleum, a preparation process is simple, and three wastes are not produced. The product is non-toxic, environment-friendly, resistant to migration, and superior in plasticizing performance, and has a good application prospect.

The present invention relates to one kind of macromolecular protein engram calcium phosphate/calcium alginate hybridized microsphere and its preparation process. The protein engram calcium phosphate/calcium alginate hybridized microsphere is prepared with sodium alginate 20-40 wt%, diammonium hydrogen phosphate 1-10 wt%, calcium chloride 50-65 wt% and protein 0.5-10 wt%. Test shows that the protein engram calcium phosphate/calcium alginate hybridized microsphere has protein adsorbing amount 1.8-5 times that of non-engram microsphere without protein, and that sodium alginate, diammonium hydrogen phosphate and calcium chloride may form new hybridized component. The present invention has simple preparation process, easy control and broad application foreground.

The invention discloses a UCNP (up-conversion nanoparticle)-graphene oxide composite material and a preparation method thereof. The method comprises steps as follows: firstly, synthesizing hexagonal-phase UCNPs with a high-temperature pyrolysis method, then treating the UCNPs with NOBF4 to enable oleic acid molecules on surfaces of the UCNPs to be replaced, then adding an amino-terminated hyperbranched polymer aqueous solution, and finally, conducting an ultrasonic reaction with graphene oxide to obtain the UCNP-graphene oxide composite material. The prepared composite material is good in water solubility, the reaction process is easy to control, steps are relatively simple, and the composite material has the broad application prospect in the aspects of photo-thermal therapy, photodynamic therapy, fluorescence labeling, biological probes and the like.

The invention relates to a bisphenol A bisphthalonitrile resin containing an arylethernitrile chain segment, a cured resin and a preparation method thereof, belonging to the field of high polymer materials. The preparation method comprises the following steps: performing nucleophilic substitution reaction on bisphenol A and 2,6-dichlorobenzonitrile used as raw materials in a strongly polar solvent/methylbenzene mixed solution in the presence of anhydrous potassium carbonate or anhydrous sodium carbonate used as a catalyst, thus forming a hydroxyl-terminated bisphenol A low polymer intermediate; then, substituting hydroxyl therein with 4-nitrophthalonitrile, thus obtaining the target resin; and adding curing crosslinking agent of which the mass is equivalent to 5% of that of the resin into the resin, precuring at 220-240 DEG C, and performing heat treatment at a temperature not lower than 375 DEG C to obtain the cured resin. The bisphthalonitrile resin provided by the invention has different chain lengths, contains an arylethernitrile chain segment, and has a low melting point and a wide curing processing temperature; the cured resin is in a network structure comprising phthalocyanine rings and triazine rings, and has excellent heat stability; and the provided preparation method of the resin and the cured resin is simple and controllable, and is suitable for industrial production.

The invention discloses a preparation method for squid skin active polypeptide. The preparation method comprises the following steps: (1) cleaning squid skin, triturating the cleaned squid skin, adding a sodium hydroxide solution, soaking the squid skin for 24 to 30 h, washing the soaked squid skin with water until a pH value is 7, then adding an n-butanol solution, carrying out stirring for 16 to 24 h, washing the squid skin with water and draining the squid skin; (2) adding water accounting for 90 to 95 times of the mass of the squid skin into the drained squid skin, carrying out uniform mixing under stirring, then carrying out heating to 40 to 60 DEG C, maintaining the temperature for 3 to 5 h and then adjusting the pH value to 8 to 9 so as to obtain initial enzymatic hydrolysate; (3) adding compound enzyme and sodium bicarbonate into the initial enzymatic hydrolysate, carrying out ultrasonic enzymatic hydrolysis at 40 to 50 DEG C for 20 to 30 min and then carrying out enzyme killing and cooling so as to obtain final enzymatic hydrolysate, wherein nitrogen is continuously introduced into a chelation liquid during enzymatic hydrolysis; and (4) subjecting the final enzymatic hydrolysate to centrifugation and collecting supernatant liquid so as to obtain a squid skin active polypeptide solution. The preparation method has the advantages of simple process steps, easily controllable reaction process, good operationality, a short production period and a high hydrolysis degree of the squid skin.

The invention discloses a preparation method of stable graphene colloidal dispersion liquid, and relates to the technical field of graphene preparation. The stable graphene colloidal dispersion liquid can be obtained by preparing graphene oxide via an improved Hummer's method, reducing graphene oxide and then treating the product by using a dispersing agent. The concentration of the stable graphene colloidal dispersion liquid is 0.21-0.25mg/mL and the stable graphene colloidal dispersion liquid contains 14-25wt% of single-layer graphene. The graphene colloidal dispersion liquid has Tyndall effects and has zeta potential of minus 41-minus 33mV and mean grain size of 250-400nm. The method is simple and practicable, is easy in control of the reaction process, does not have special requirements for equipment, is lower in cost, is easy to popularize and can be widely applied to the fields of nanoelectronics, sensors, nanocomposites, batteries, supercapacitors, hydrogen storage materials and the like.

The invention relates to the field of silane coupling agents and particularly discloses a silane coupling agent containing a cyanogen group and a preparation method of the silane coupling agent. The silane coupling agent containing the cyanogen group is synthesized from oligosiloxane (A) containing a hydrogen group and a compound (C) containing a cyanogen group and an allyl group through hydrosilylation, or synthesized from oligosiloxane (A) containing the hydrogen group, siloxane (B) containing an allyl group, and the compound (C) containing the cyanogen group and the allyl group through hydrosilylation. The silane coupling agent containing the cyanogen group is capable of improving the bonding strength of silica gel to various base materials; and in additional, the preparation process is easy to control, the production efficiency is high and the yield of products is high.

The invention discloses a method for preparing tiotropium bromide anhydride, which comprises the steps of: under the anhydrous and anaerobic condition, preparing an intermediate I by taking a special kettle bottom valve and a multi-functional reaction kettle as a reactor, taking a special filter as refining equipment and taking hydrobromic scopolamine as an initial raw material through reduction hydrogenation reaction; preparing an intermediate II by performing addition reaction of Grignard reagent and dimethyl oxalate in tetrahydrofuran, wherein the Grignard reagent is prepared from bromothiophene by taking tetrahydrofuran as a medium through iodine catalysis; preparing an intermediate III by performing ester exchange condensation reaction of the intermediate I and the intermediate II under the action of sodium; preparing an intermediate IV from the intermediate III through methylation bromination reaction; and preparing the tiotropium bromide anhydride by performing the activated carbon decoloration and recrystallization on the intermediate IV by using aqueous solution and acetonitrile methanol isopropyl ether solution. Compared with those in the prior art, reaction products of the method have the advantages of good quality, high yield, controlled reaction process, safe production and good environmental protection effect.

The invention relates to a method for preparing a titanium polyacetylacetonate precursor sol spinning solution, a titanium oxide continuous fiber and a titanium oxide nanofiber. According to the method, tetrabutyl titanate is used as a titanium source for synthesis of a titanium polyacetylacetonate precursor, and the precursor, an auxiliary agent and a solvent are mixed uniformly to obtain the solspinning solution; the sol spinning solution is subjected to electrospinning and dry spinning so as to obtain a precursor nanofiber and a continuous fiber respectively; and then heat treatment is carried out so as to obtain the titanium oxide nanofiber and the titanium oxide continuous fiber. The prepared titanium oxide nanofiber has a diameter of 400 to 1200 nm and a length of 2 to 6 cm; and theprepared titanium oxide continuous fiber has a diameter of 20 to 100 [mu]m, a length of more than meters and a strength of 100 MPa to 1.0 GPa. The method of the invention has the advantages of simpleprocess, low cost and capacity of avoiding the existence of impurity ions; the prepared precursor sol has good spinnability and is stable and not prone to gelation; and the prepared fibers have highstrength and good catalytic performance.

The invention provides a ZnMgO ultraviolet detector, which comprises a ZnMgO thin film layer, wherein a crystal structure of the ZnMgO thin film layer is a cubic phase; the ZnMgO thin film layer is aprepared according to the following method of growing the ZnMgO thin film layer in metal organic compound chemical vapor deposition equipment into which oxygen is introduced by employing an organic zinc compound as a zinc source and an organic magnesium compound as a magnesium source. Compared with the prior art, the ZnMgO ultraviolet detector has the advantages that a ZnMgO thin film is preparedby using a metal organic compound chemical vapor deposition method, the airflow of the ZnMgO thin film is parallel to a substrate and the growth temperature is relatively low, so that the prepared ZnMgO thin film layer has the characteristics of being high in crystal quality, free of phase separation and steep in absorption cutoff edge, the ultraviolet detector comprising the ZnMgO thin film layerhas relatively good light effect capacity, a light response cutoff edge of a device can be adjusted without adjusting the light absorption cutoff edge of the ZnMgO thin film layer, the preparation process is simple and the reaction process is easy to control.

The invention relates to a synthetic method for silane coupling agent modified acrylic resin with side-chain suspended paeonol structure, which comprises following steps: adding paeonol, N-methylol acrylamide and anhydrous alcohol in a conical flask in sequence; adding anhydrous aluminum chloride after the N-methylol acrylamide is completely dissolved; stirring in water bath for reaction; removing part of alcohol through rotary evaporation after reaction; pouring concentrated solution in solution of dilute sulfuric acid and aluminum chloride, and stirring for removing catalyst aluminum chloride, then light red crude product is obtained through pumping filtration and drying; dissolving light red crude product using mixed solution with ethyl acetate and ethanol in volume ratio of 3 to 2, then white solid substance is obtained through recrystallization after the insoluble matters is filtered out. The synthetic method for silane coupling agent modified acrylic resin with side-chain suspended paeonol structure has the advantages of controllable reaction process, short reaction time, high applicability to organotin-free self-polishing antifouling coating, high antifouling activity and fungicidal activity, and ability to prevent the adherence of marine organism on the facilities.