61results about How to "Good experimental reproducibility" patented technology

The invention brings forward a preparation method of mesoporous nickel cobaltate fiber. According to the preparation method, an organic solvent is added during the preparation process of a precursor; a mixed phase of a water phase and an organic phase is used as a solvent, soluble nickel salt and cobalt salt are used as raw materials, and oxalate is used as a precipitating agent; in a system of Ni<2+>-Co<2+>-NH3-NH4<+>-SG<n->-C2O4<2->-H20-C2H5OH, a fibrous precursor is prepared; and the fibrous precursor is subjected to thermal decomposition in the air atmosphere at 250-400 DEG C so as to obtain the mesoporous NiCo2O4 fiber. According to the invention, coprecipitation based on the Ni-Co ratio set in the raw materials is effectively realized. The prepared NiCo2O4 powder is a cubic phase, has high purity and large specific surface area, is fibrous and porous, and is applicable to be used as a catalyst or an alkaline solution oxygen-evolution / hydrogen-evolution electrode material or direct alcohol fuel cell anode catalyst. The method provided by the invention is simple to operate and easy to control, has advantages of mild condition and low cost, and is suitable for commercialized production.

The invention discloses a pamoic acid cadmium light-emitting material containing dipyridyl type ligand and a preparation method of the pamoic acid cadmium light-emitting material, and belongs to the technical field of organic-inorganic chemical hybridization compound preparation. The structural formula of the light-emitting material is Cd2(pam)2(bpt)2(H2O).0.68H2O, wherein pam is deprotonated pamoic acid (C23H14O6), and bpt is 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (C12H8N4S). The molecular formula of the material is C70H47.36Cd2N8O13.68S2, the material belongs to a trigonal system, the space group is shown in the description, and the cell parameter is shown in the description, wherein alpha is equal to beta and equal to 90 degrees, and gamma is equal to 120 degrees. Cheap inorganic cadmium salt and pamoic acid are adopted as reactants, organic matter 2,5-bis(4-pyridyl)-1,3,4-thiadiazole is adopted as the bridging ligand, the cadmium-based material of a three-dimensional metal organic skeleton structure is obtained through a hydrothermal method, and the material is a new product synthesized in a laboratory. The synthesis process and production equipment are simple, the material is high in final yield and good in thermal stability, the light-emitting intensity of the bulk phase material is high, and the material can be widely applied to various light emitting fields.

The invention discloses a polymer solar cell and a preparation method thereof. The polymer solar cell provided by the present invention includes: a substrate, an anode layer, an anode modification layer, a photoelectric active layer, a cathode modification layer and a cathode layer connected in sequence in pairs, wherein the cathode modification layer is dialkoxybis (Acetylacetonate) titanium alloy film. The present invention uses diisopropoxy bis(acetylacetonate)titanium as the cathode modification layer material, introduces it into the polymer solar cell, and increases the photoelectric conversion efficiency of the solar cell; Compared with batteries made of modified layer materials, the present invention also has the characteristics of simple process, low cost, good experimental reproducibility and the like. Moreover, the diisopropoxy bis(acetylacetonate)titanium coating film can be applied on the photoelectric active layer by using very simple methods such as spin coating, the preparation process is simple, the thickness is easy to control, and there is no impact on the photoelectric active layer of the lower layer. Any damage is suitable for large-scale industrial production.

The invention provides a sintering ore burdening method. The method comprises the following steps of: calculating a liquid phase quantity and temperature relationship of a sintering burdening scheme by adopting thermodynamic calculation software Factsage, determining an undetermined scheme according to the liquid phase quantity and temperature relationship, then obtaining a melting shrinkage rate and temperature relationship of the undetermined scheme through a melting characteristic test experiment, and finally judging whether the undetermined scheme belongs to a reasonable scheme according to an initial melting temperature of the undetermined scheme and the fit degree of the liquid phase quantity and temperature relationship and the melting shrinkage rate and temperature relationship. The method of the invention greatly reduces the experiment workload and the labor intensity, overcomes the defect of burdening sintering ores simply by means of subjective experience, can intuitively and accurately reflect the liquid phase generating property of a sintering process, and has small experimental error and good experimental reproducibility compared with a traditional sintering cup experiment; and a sintering burdening scheme obtained by judging the data fit error is suitable for guiding the practical production.

The invention relates to a pyrophosphate assisted method used for synthesis of high performance prussian blue analogous. The pyrophosphate assisted method used for synthesis of high performance prussian blue analogous comprises following steps: a pyrophosphate is mixed with a solvent so as to obtain a solution A; sodium ferrocyanide or potassium ferricyanide, sodium chloride, PVP, and water are mixed so as to obtain a solution B; the solution A is mixed with the solution B so as to obtain a suspension C; the suspension C is allowed to stand for aging, and a precipitate obtained via aging is collected via filtering so as to obtain the target product. The beneficial effects are that: the raw materials are cheap; the synthesis method is simple and convenient; experimental reproducibility is high; the obtained high performance prussian blue analogous is uniform in morphology and excellent in crystallinity; and it is confirmed via electrochemical tests that product crystallinity is increased effectively, and capacity is increased.

The invention relates to a detection method for the residual quantity of chloramphenicol. The detection method includes the following steps of 1, sample pretreatment, wherein ethyl acetate is added into a sample, homogenizing and centrifugation are conducted, and then the mixture is evaporated to be almost dry; 2, purification of the sample, wherein normal hexane and an anhydrous sodium sulfate column are sequentially used for purifying the sample obtained in the step 1; 3, derivatization of the sample and a standard product, wherein acetic anhydride is adopted as a derivatization reagent, triethylamine is adopted as a catalyst, and the sample and the standard product are derived; 4, gas chromatography detection, wherein the sample solution and standard product solution obtained in the step 3 are injected into a gas chromatograph for detection. According to the detection method for the residual quantity of chloramphenicol, derivatization steps are simple, detection efficiency is high, the adopted derivatization reagent is low in sensitivity to the environment, the adopted catalyst is cheap, and harm to people and the environment is low.