10results about How to "Change solubility" patented technology

The invention belongs to the technical field of solar cells, and relates to synthesis of an organic phosphonic acid micromolecule material and application of the organic phosphonic acid micromolecule material in perovskite solar cells, the micromolecule material adopts a phosphonic acid group as a aiming group, different carbazole aromatic nuclei as head groups, and alkyl chains with different lengths are connected with the head groups and the aiming group; when the small molecule material is used as a hole transport layer material in a perovskite solar cell device, the efficiency and the stability of the device can be effectively improved; the micromolecule material is applied to a perovskite solar cell system as an interface modification layer, good device performance is obtained, and the service life of a perovskite solar cell under a high-temperature illumination condition is prolonged; the photoelectric conversion efficiency exceeds 24%, and the preparation method of the phosphonic acid small molecule material is simple and easy to operate, and has wide application prospects and market potential.

The invention relates to the technical field of microbial fermentation, and specifically discloses a low-pyruvate xanthan gum and a preparation method thereof. The preparation method of the low-pyruvate xanthan gum comprises the following steps: S1, after activating xanthomonas by using an activation culture medium, transferring the activated strain into a seed culture medium for cultivation to obtain a seed liquid, inoculating the seed liquid into a fermentation culture medium, and obtaining a fermentation liquid after the cultivation is completed; S2, adding a treatment agent to the fermentation liquid obtained in step S1, stirring it, heating it to obtain a treatment liquid, extracting it with ethanol after cooling, drying it, and crushing it to obtain the treated liquid; the obtained low-pyruvate xanthan gum has excellent synergy, high temperature resistance, acid resistance, salt resistance and other properties, and has good product stability; the culture medium of the invention has simple components, a simple preparation method, saves time compared with mutating strains and improving strains, saves cost compared with optimizing culture medium components and adjusting culture control conditions, and is suitable for industrial production.

A zein and luteolin composite material and its modified material and preparation method belong to the technical field of zein and luteolin composite materials. The zein and luteolin composite material is prepared by mixing zein and luteolin as raw materials, and its modified material is that the zein and luteolin composite material is treated with a high pressure field (high hydrostatic pressure or high pressure homogenization), and a new composite is formed through the interaction of the zein and luteolin composite system, and its thermal stability and solubility are increased, the surface hydrophobicity is reduced, and the antioxidant property is increased.

The invention relates to a lignin decomposition method and a used catalyst. The invention provides a high-entropy alloy catalyst, the high-entropy alloy catalyst is a supported catalyst prepared from a metal salt and a carrier, and the metal salt is composed of an iron salt, a nickel salt, a cobalt salt and a manganese salt. The invention also provides a preparation method of the high-entropy alloy catalyst. The method comprises the following steps: adding lignin and a high-entropy alloy catalyst into a high-pressure kettle, carrying out inert gas replacement on the high-pressure kettle, then filling liquid ammonia into the high-pressure kettle, then starting a high-pressure kettle heating program, heating to a reaction temperature according to a set heating program, and carrying out reaction for 2-3 hours; and raising the pressure until the ammonia reaches a supercritical state for reaction. The lignin catalytic decomposition method provided by the invention is simple to operate and high in lignin decomposition rate.

The invention discloses a fast charging electrolyte, a lithium ion battery and a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The fast charging electrolyte provided by the invention comprises an electrolyte lithium salt, an organic solvent and an additive, the types of the electrolyte lithium salt, the organic solvent and the additive are different; the additives comprise a first additive and a second additive; the first additive comprises at least one of an ester additive, a nitrile additive and a hydrofluoroether compound; the second additive comprises an inorganic salt additive; the addition amount of the first additive is 1-20% of the total mass of the fast charging electrolyte; the addition amount of the second additive is 0.01-5% of the total mass of the fast charging electrolyte. According to the invention, the first additive and the second additive are combined and added into the electrolyte, so that the cycling stability, the fast charging performance and the rate capability of the battery can be remarkably improved under the high voltage of more than or equal to 4.6 V.

The invention relates to a copolymer and a preparation method thereof, an embolic agent solution and an embolic agent system. The copolymer comprises a hydrophilic chain segment and a hydrophobic chain segment, the hydrophilic chain segment comprises at least one of acrylic acid with a hydrophilic functional group and a derivative group thereof, the hydrophobic chain segment comprises at least one of acrylic acid with a hydrophobic functional group and a derivative group thereof, the hydrophilic functional group comprises at least one of carboxyl, hydroxyl, a sulfonic acid group and an amide group, and the hydrophobic functional group comprises at least one of acrylic acid and a derivative group thereof. The hydrophobic functional group includes a long-chain alkyl group. The hydrophilic chain segment not only can provide hydrophilic groups for the copolymer so as to enable the copolymer to have good water solubility, but also can change the solubility of the copolymer so as to change the rheological property of a copolymer solution. The hydrophobic unit can provide hydrophobic side groups for the copolymer, so that the molecular chain of the copolymer has certain hydrophobic characteristics. Therefore, when the copolymer is dissolved in a solvent, hydrophobic association can be generated among the hydrophobic side groups, so that necessary viscoelasticity is provided for a copolymer solution, and the copolymer solution is in a gel state.

The invention discloses a polyimide / polyacid-based composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method of the polyimide / polyacid-based composite photocatalyst comprises the following steps: (1) mixing and reacting an amine compound, a polyacid compound and a solvent to obtain a solid product; and (2) mixing the solid product with an anhydride compound, and carrying out thermal polymerization to obtain the polyimide / polyacid-based composite photocatalyst. The POM-pi interaction of polyimide and polyacid in the photocatalyst can improve the visible light absorption range and solubility of polyacid, improve the photon-generated carrier separation and transmission efficiency and recoverability of the photocatalyst, and in addition, the photocatalyst has the advantages of long service life, high stability and low cost. The method can play a continuous and efficient decomposition role in the field of hydrogen production by decomposing water.

The invention provides a preparation process and application of novel phosphatidylated carnosic acid, and the preparation process comprises the following steps: mixing 3-5 parts by mass of soybean phospholipid and 1-3 parts by mass of modified soybean phospholipid, melting at low temperature, adding 5-10 parts by mass of carnosic acid, mixing, and curing at low temperature to obtain the novel phosphatidylated carnosic acid. The preparation method of the modified soybean phospholipid comprises the following steps: (1) adding organic acid into soybean concentrated phospholipid serving as a raw material, and uniformly stirring for later use; and (2) continuously adding the material prepared in the step (1) into an absorption tower, intermittently or continuously blowing ozone into the absorption tower at the same time, enabling the material to be in contact with the ozone to carry out oxidation reaction, discharging the material from the absorption tower, and drying at the vacuum degree of 0.095-0.1 Mpa to prepare the modified soybean phospholipid. After the carnosic acid is phosphatized, the stability can be improved, and the bioavailability of the carnosic acid can be enhanced. The application of the compound in the fields of food, food additives, animals, pets, cosmetics or other antioxidation and the like is expanded.

The application discloses a process method for producing gamma-cyclodextrin by taking ethanol and phenyl-substituted borate as a production aid, and belongs to the technical field of cyclodextrin production. The application uses gamma-cyclodextrin glucosyltransferase, takes starch as a substrate, and supplements an ethanol solution of phenyl-substituted borate as a production aid, so that the yield of gamma-cyclodextrin and the proportion of the product are significantly improved. The method is safe and efficient, and can be applied to the production of food and medicine. By using the method, the total conversion rate of gamma-cyclodextrin can reach about 54.14%, and the proportion of gamma-cyclodextrin can be up to 83.07%.

The application discloses a method for producing high-purity iron red by using iron waste slag in rare earth smelting, and relates to the field of rare earth smelting. According to the principle that iron hydroxide can be crystallized by heating in sodium hydroxide solution, and is converted into a crystal type of hydrated ferric oxide which is hardly soluble in acid by high-temperature pyrolysis, and the difference in solubility of the two in an acidic condition is used for selective leaching and separation, the iron waste slag produced in the rare earth wet smelting can be converted into a crystal type of hydrated ferric oxide by two-stage heating to different temperatures in sodium hydroxide solution, so that the solubility of iron and non-iron elements in an acidic condition is changed, and the dissolution and separation are facilitated. The process has low actual alkali consumption, and the residual alkali can be recycled, the obtained high-purity iron red meets the national standard in terms of color and impurity content, and the operation process is simple and meets the national green development concept.