7results about How to "Improve charge distribution" patented technology

The invention relates to the technical field of electrosynthesis of high-added-value products, in particular to a supported catalyst for producing hydrogen peroxide through electrocatalytic oxygen reduction and a preparation method and application of the supported catalyst. The catalyst is represented by a formula NiTPP (at) CNT-ox, an oxygen-doped carbon nanotube CNT-ox is used as a carrier, and nickel tetraphenylporphyrin NiTPP is used as an active site. According to the preparation method, NiTPP is adsorbed on CNT-ox through a dispersion-adsorption method, and the supported catalyst NiTPP coated CNT-ox is obtained. The NiTPP-CNT-ox prepared by the method has relatively high catalytic activity, selectivity and excellent stability in the process of preparing hydrogen peroxide by electrocatalytic oxygen reduction, and has a potential application prospect.

The invention discloses a P-region element reinforced double-monatomic catalyst as well as a preparation method and application thereof, belongs to the field of catalysts, and solves the problem of poor selectivity of production of hydrogen peroxide by electrocatalytic two-electron oxygen reduction of a traditional monatomic catalyst based on transition metal. According to the invention, cobalt and gallium elements are introduced into a zeolite imidazate precursor through an ion exchange method, the coordination environment of the catalyst is regulated through introduction of sulfur species, and finally, the P-region element reinforced double-monatomic catalyst is synthesized through high-temperature annealing. The invention also discloses an application of the catalyst in electrocatalytic two-electron oxygen reduction. The catalyst disclosed by the invention is used for producing hydrogen peroxide by electrocatalytic two-electron oxygen reduction, has the advantages of high hydrogen peroxide selectivity and high hydrogen peroxide production rate, and has profound significance for expanding the application scene of a P-region element catalyst in the field of electrocatalysis.

The present application relates to the technical field of infant nutrition, in particular to a composition suitable for infants with milk protein allergy and a preparation method thereof. The composition comprises modified deep hydrolyzed milk protein complex, carbohydrate, complex vegetable oil, 2'-fucosyllactose, complex vitamins, complex minerals, nucleotide complex and potassium citrate. The deep hydrolyzed milk protein complex is prepared by the following method: enzymolysis is performed on a mixture of whey protein and casein protein, ultrafiltration is performed to obtain a deep hydrolyzed milk protein solution, deamidation treatment is performed, bovine milk fat globule membrane polar lipid concentrate is added, and shearing, homogenization and drying are performed. The composition has the characteristics of comprehensive nutrition, suitable osmotic pressure and good brewing property, can promote intestinal mucosa repair and immune tolerance establishment, and is suitable for desensitization feeding and long-term nutritional support of infants with milk protein allergy.

This invention relates to the field of electrosynthesis of high-value-added products, and more particularly to a supported catalyst for the electrocatalytic reduction of oxygen to produce hydrogen peroxide, its preparation method, and its application. The catalyst is represented by the formula NiTPP@CNT-ox, wherein oxygen-doped carbon nanotubes (CNT-ox) serve as the support, and nickel tetraphenylporphyrin (NiTPP) serves as the active site. This invention utilizes a dispersion-adsorption method to adsorb NiTPP onto CNT-ox, obtaining the supported catalyst NiTPP@CNT-ox. The NiTPP@CNT-ox prepared by this invention exhibits high catalytic activity, selectivity, and excellent stability in the electrocatalytic reduction of oxygen to produce hydrogen peroxide, showing promising application prospects.

The ignition device comprises an ignition needle and a metal energy-gathering ring used for being grounded, the ignition needle comprises an electrode needle and an insulator, the insulator wraps the electrode needle, the metal energy-gathering ring comprises a metal energy-gathering ring body and a grounding end, the metal energy-gathering ring body is connected with the metal energy-gathering ring body, and the grounding end is connected with the metal energy-gathering ring body. The metal energy-gathering ring body is embedded in the insulator and surrounds the ignition needle, the grounding end is connected to the bottom of the metal energy-gathering ring body, and the grounding end is exposed out of the insulator and used for supporting and abutting against a base. The stove burner comprises the ignition device. Due to the fact that the metal energy-gathering ring body is hidden in the insulator, the metal energy-gathering ring body is not affected by attachment of greasy dirt any more, in addition, the grounding end can ensure that the metal energy-gathering ring is reliably grounded, charge current is more concentrated during discharging, the breakdown capacity is higher, and the success rate of product ignition is increased.

The invention belongs to the technical field of environmental engineering, and discloses preparation and application of a MoSe2 quantum dot loaded titanium black nanotube array photo-anode. The excessive elementary substance Se forms MoSe2 at a defect site, and simultaneously participates in regulation and control of a heterojunction interface electric field, optimizes charge distribution at a Ti < 3 + > site, reduces the trend of conversion to a high valence state in a catalysis process, and improves the catalytic stability of a system. In the catalytic reaction process, the confinement effect generated by TiO2NTA on MoSe2QD and the charge transfer effect mediated by an interface electric field can cooperatively regulate and control the migration and conversion path of electrons in the system, the reaction energy barrier generated by active species is reduced, and the generation amount of the active species in the system is effectively increased. The preparation method of the electrode material is simple, large-scale production is easy, existing electrochemical equipment is simply transformed, an electro-oxidation anode material is replaced, a photoelectric catalytic degradation device can be constructed by arranging a waterproof LED light source at a photoanode of the device, and the transformation cost is saved.

The invention discloses a high-stress-resistance black glutinous rice cultivation method, and belongs to the technical field of crop cultivation. The method specifically comprises the following steps: (1) soaking black glutinous rice seeds in concentrated sulfuric acid for 5-10 minutes, carrying out magnetization treatment, then taking out, disinfecting, washing and airing; (2) putting the treated black glutinous rice seeds into adjusting liquid seeds, and soaking for 20-30 hours; (3) soaking the seeds treated in the step (2) in a nutrient solution, and culturing until germination; and (4) after germination, transplanting the seedlings into a black glutinous rice seedling substrate for continuous cultivation, supplementing light with blue light with the illumination intensity of 800-1000Lx for 6-10 hours every day, and transplanting the seedlings 15-20 days later until the seedlings grow maturely. The black glutinous rice cultivation method is improved, and the survival rate, stress resistance and other characteristics of black glutinous rice seedlings can be effectively improved through cooperation of the specific cultivation process and reagents.