13 results about "Solution synthesis" patented technology

The invention discloses a big language model credible reasoning system and method based on double-flow cognitive loss and solution synthesis, and aims to solve the problem of'compliance illusion 'caused by the fact that a big language model cannot process internal and external knowledge conflicts. The invention provides a double-flow cognitive engine, which is used for executing a'this-my 'flow of internal knowledge of a simulation model and a'super-my' flow strictly following an external document in parallel so as to generate two opposite cognitive state vectors. The system calculates a semantic conflict score between the two vectors in real time through a cognitive disorder detector. When the conflict is significant, the system activates and demodulates the synthesis module, and actively generates a text for solving the conflict; when there is no conflict, the output of the "super-my" stream is continued to ensure factuality. According to the method, cognitive conflicts are explicitly and actively solved, and a large language model is transformed into an inference engine with inherent critical thinking and high credibility.

The invention provides a high-entropy oxide material and a preparation method and application thereof, and relates to the technical field of supercapacitor materials. The high-entropy oxide material is prepared by taking nitrates corresponding to Cr, Fe, Co and Ni and ammonium paramolybdate as raw materials through a simple solution synthesis method, is of a spinel structure and has a space group of Fd-3m. According to the preparation method provided by the invention, the specific surface area of the material can be increased by utilizing the high-entropy effect of various metal elements by regulating and controlling the proportion and synthesis conditions of all the metal elements, and the prepared high-entropy oxide can still keep the structural stability and electrochemical activity under high temperature or extreme electrochemical conditions, is not easy to generate phase separation or degradation, and has a good application prospect. Therefore, the durability and the service life of the material are remarkably improved. The high-entropy oxide material prepared by the method shows excellent pseudocapacitance behavior in electrochemical energy storage, and provides an efficient and economical material choice for energy storage.

The invention belongs to the technical field of detection materials, and relates to a double-perovskite-based luminescent material, a preparation method thereof and application of the double-perovskite-based luminescent material in luminescent imaging or anti-counterfeiting. The molecular formula of the double-perovskite-based luminescent material is Cs2NaCrCl6: Tm < 3 + > / Yb < 3 + >, the molar doping concentration of Tm < 3 + > is 0.5-5%, and the molar doping concentration of Yb < 3 + > is 2-80%. The preparation method comprises the following steps: dissolving cesium chloride, sodium chloride, chromium chloride, thulium chloride and ytterbium chloride in water according to a stoichiometric ratio, uniformly mixing, carrying out a solution synthesis reaction, and evaporating to remove a solvent, thereby obtaining the product. The double-perovskite-based luminescent material provided by the invention can generate light with different colors, can realize multiple anti-counterfeiting, is simple in preparation process and low in cost, and is beneficial to realizing industrial large-scale production.

The utility model relates to the technical field of reaction bottle liners, in particular to a reaction bottle liner for a laboratory, which comprises a reaction bottle, a liner, a plurality of anti-slip bumps, a plurality of anti-slip strips, a plurality of connecting strips, a plurality of bonding strips, a sealing ring, an oil filling pipe and a plug body, the reaction bottle is a 2000ml cylindrical bottle body, during reaction, the lining is placed on the inner wall of the reaction bottle and attached to the inner wall, after the lining is installed, the stirring rod is installed, the reaction bottle cap is covered, the clamp is clamped, the mercurial thermometer and the condensation pipe are fixed through the rubber plug, the motor is started for heating reaction, after solution synthesis is finished, the cover is opened, the lining is taken out by wearing the heat insulation glove, and the reaction bottle is sealed. Materials in the lining are poured into a packaging bag, and the lining can be reused after being placed and cooled and adhered substances are torn off, so that the reaction bottle does not need to be cleaned after being used, the lining can be taken out and the adhered substances are torn off, the reaction bottle can be continuously used, and the cleaning process is reduced.

The application provides a high-entropy oxide material and a preparation method and application thereof, and relates to the technical field of supercapacitor materials.The high-entropy oxide material is prepared from nitrate of Cr, Fe, Co and Ni and ammonium paramolybdate as raw materials through a simple solution synthesis method, and has a spinel structure and a space group of Fd-3m.The preparation method can utilize the high-entropy effect of multiple metal elements, increase the specific surface area of the material, and make the prepared high-entropy oxide maintain the structural stability and electrochemical activity under high temperature or extreme electrochemical conditions, and is not prone to phase separation or degradation, thereby significantly improving the durability and service life of the material.The high-entropy oxide material prepared by the above method exhibits excellent pseudo-capacitance behavior in electrochemical energy storage, and provides an efficient and economical material selection for energy storage.

The invention discloses a few-seed-crystal strategy for extendable solution synthesis of a large-area single crystal film. The uniformity of the single crystal film processed by a large-scale solution in form and crystal structure is proved from multi-scale characterization. The synthesized single crystal film shows excellent electrical performance indexes: the Hall effect mobility at room temperature is as high as 21 cm < 2 > V <-1 > s <-1 >, and the trap state density is as low as 6.6 * 10 < 8 > cm <-3 >.

The present invention discloses the application of a phytic acid-graphene oxide quantum dot composite as an aqueous monomer in the preparation of a polyamide nanofiltration membrane. The preparation method of the phytic acid-graphene oxide quantum dot composite includes: preparing an aqueous solution of graphene oxide by a modified Hummers method, then subjecting it to ultrasonic treatment at 450-550 W and performing a heating reaction to obtain a graphene oxide quantum dot solution, and further preparing the phytic acid-graphene oxide quantum dot composite by a solution synthesis method using the graphene oxide quantum dot solution and phytic acid as raw materials. By adding the phytic acid-graphene oxide quantum dot composite to the aqueous monomer, the present invention prepares a phytic acid-graphene oxide quantum dot composite-doped polyamide nanofiltration membrane through interfacial polymerization. Under the test conditions of room temperature and 0.6 MPa, it has a high rejection rate (above 97%) for a 0.2 wt% magnesium sulfate solution, and the pure water flux is 70-80 LHM.

The invention discloses a preparation method of a homogenized polyamide acid solution and a used reaction device, and belongs to the technical field of polyamide acid solution synthesis. The preparation method comprises the following steps: dissolving diamine in a reaction kettle by using a polar aprotic solvent, and adding dianhydride into the reaction kettle to carry out condensation polymerization, compared with the prior art, in the step of adding dianhydride into a reaction kettle for polycondensation reaction, non-reaction gas is continuously introduced into a polymerization reaction system in the kettle. By adopting the method disclosed by the invention, the polyamide acid solution with high molecular weight and narrow molecular weight distribution can be obtained in a relatively short time.

The present invention provides a radioactive drug solution synthesis apparatus and a method for cleaning replacement modules that can suppress the retention of residual substances in the line. [Solution] The radioactive drug solution synthesis apparatus 10 introduces cleaning solution into one container and overflows the cleaning solution from the other container to introduce it into the suction line. This allows the suction line to be cleaned with the cleaning solution. Here, target water does not actually pass through the vacuum lines L2 and L9, but rather volatile vapor adheres to them. There was a need to easily clean such residues. In response to this, the vacuum lines L2 and L9 can be cleaned with a simple operation of overflowing cleaning solution from one container, without adding any mechanisms.

The present invention discloses the application of a phytic acid-nitrogen-doped carbon quantum dot composite as an aqueous monomer in the preparation of a polyamide nanofiltration membrane. The preparation method of the phytic acid-nitrogen-doped carbon quantum dot composite includes: preparing nitrogen-doped carbon quantum dots by a hydrothermal reaction method, and then preparing a phytic acid-nitrogen-doped carbon quantum dot composite from the nitrogen-doped carbon quantum dots and phytic acid as raw materials by a solution synthesis method. By adding the phytic acid-doped carbon quantum dot composite to the aqueous monomer, a phytic acid-doped carbon quantum dot composite-doped polyamide nanofiltration membrane is prepared by interfacial polymerization. Under the test conditions of room temperature and 0.6 MPa, it has a high rejection rate (above 98%) for a 0.2 wt% magnesium sulfate solution, and the pure water flux is 65-75 LHM.

The invention relates to the technical field of luminescent materials, in particular to a preparation method of a copper-based metal halide composite material paper X-ray scintillator, which adopts a simplest and direct solution synthesis method, is simple and convenient to operate, does not involve complex processes and high-energy equipment, has strong repeatability and can be quickly produced on a large scale. The defects of high temperature, high pressure and the like of traditional fluorescent powder preparation are avoided; the flexible scintillator film can be rapidly obtained according to the size of a paper base through a prime coat method; the scintillator is rich in raw material source, low in production cost, high in commercial use value and capable of being applied to the fields of X-ray flat panel detectors, CT detectors and the like, and in this way, the technical problem that in the prior art, a scintillator is limited in the aspect of X-ray imaging due to low spatial resolution and material toxicity of the scintillator in the prior art is solved.

The application belongs to the technical field of detection materials, and relates to a double-perovskite-based luminescent material, a preparation method thereof and application of the double-perovskite-based luminescent material in luminescent imaging or anti-counterfeiting. 3+ / Yb 3+ The molar doping concentration of Tm 3+ is 0.5-5%, and the molar doping concentration of Yb 3+ is 2%-80%. The preparation method is as follows: cesium chloride, sodium chloride, chromium chloride, thulium chloride and ytterbium chloride are dissolved in water according to the stoichiometric ratio, uniformly mixed and subjected to a solution synthesis reaction, and then the solvent is evaporated to obtain the double-perovskite-based luminescent material. The double-perovskite-based luminescent material provided by the application can generate light of different colors, can realize multiple anti-counterfeiting, and has the advantages of simple preparation process, low cost and being conducive to industrialized mass production.

The invention relates to the technical field of synthesis of chalcogenide compounds, in particular to a solution synthesis method of chalcogenide molybdenum amorphous powder. The method comprises the following steps: mixing a chalcogenide simple substance, a reducing agent and water to carry out reduction reaction, and reducing the chalcogenide simple substance into-2-valent ions to obtain a solution containing chalcogenide anions; mixing the solution containing the chalcogenide anions with a + 6-valent molybdenum source, and carrying out precipitation reaction to form amorphous chalcogenide molybdenum; the + hexavalent molybdenum source comprises ammonium molybdate or molybdenum acetylacetonate; the chemical formula of the amorphous molybdenum chalcogenide is MoX3, and X is S, Se or Te. Ammonium molybdate or molybdenum acetylacetonate is used as the molybdenum source, the sulfur group elementary substance is used as the sulfur source, the amorphous chalcogenide molybdenum is prepared through the solution synthesis method, the method has the advantages that the method is simple, raw materials are easy to obtain, cost is low, expensive equipment is not needed, expandability is good and the like, and the synthesized amorphous chalcogenide molybdenum is high in purity, uniform in particle size, uniform in element distribution and good in quality.