9results about How to "Effective passivation" patented technology

The invention discloses an efficient broad-spectrum biocontrol bacterium pseudomonas FM36 and application thereof. The wheat pseudomonas is a strain FM36, is classified and named as Pseudomonas siliginis, is preserved in the China General Microbiological Culture Collection Center (CGMCC), and has a preservation number of CGMCC NO.32868. The invention further discloses a preparation method of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36. The invention further discloses an application of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36, and the application of the high-efficiency broad-spectrum biocontrol bacterium pseudomonas FM36. The invention further provides application of the wheat pseudomonas FM36 strain in promoting tomato growth and preventing and treating plant viruses and pathogenic fungi. The wheat pseudomonas provided by the invention has a promoting effect on the growth and yield increase of tomatoes, and has obvious antagonism and obvious antagonism on pathogenic fungi such as tobacco mosaic virus (TMV), chilli vein mottle virus (ChiVMV), rhizoctonia solani, Magnaporthe oryzae, alternaria tenuissima, colletotrichum sp.sp.cubense, fusarium oxysporum f.sp.cubense and the like, and the wheat pseudomonas has an obvious antagonism effect on pathogenic fungi such as the tobacco mosaic virus (TMV), the chilli vein mottle virus (ChiVMV), the rhizoctonia solani, the Magnaporthe oryzae, the alternaria tenuissima, the colletotrichum sp.sp.cubense and the like.

The present disclosure relates to an ecological building block prepared from river silt and a method and device thereof, the method comprising: S1, removing garbage from the original river silt and separating sand and gravel to obtain pre-treated river silt; adding auxiliary agents to the pre-treated river silt for passivation conditioning to obtain passivated river silt; the auxiliary agents include calcium oxide, iron salt, polyacrylamide and bentonite; S2, dehydrating the passivated river silt to obtain a silt cake; crushing the silt cake into dispersed bottom mud with a particle size not exceeding 1 mm; S3, mixing the dispersed bottom mud with cement, coarse aggregate and fine aggregate, pressing and forming, and then standing to obtain an ecological building block. The device for preparing ecological building blocks from river silt disclosed in the present disclosure comprises a cutter suction dredger, a sand and gravel separator, a silt thickener, a silt dewaterer, a silt crusher and a brick press. The heavy metal ions of the ecological building blocks disclosed in the present disclosure are passivated, and the environmental protection performance and compression resistance are excellent.

The application belongs to the technical field of functional coating and specifically provides a black phosphorus heterojunction water-blocking and oxygen-blocking coating and a preparation method thereof, which comprises the following steps: 1) mixing chloroform and DMF, adding bulk BP for ultrasonic treatment, collecting supernatant by centrifugation, and drying to obtain BP nanosheets; dispersing the BP nanosheets into a mixture of ethanol, water and SDBS, adding ammonia hydroxide, HCHO and NiCl2 after stirring, and then performing a reaction by heating, collecting the solid by centrifugation, and washing to obtain a base material; 2) drying the base material, placing it into a sealed container containing silicone oil, and performing a reaction by heating; transferring it into chloroform containing 1,12-dodecylamine for a reaction; then transferring it into acetone for immersion, taking it out, blowing dry, and obtaining a barrier material; 3) transferring the barrier material to the surface of a substrate to obtain a coating. The coating prepared by the application can effectively block the erosion of oxygen and water molecules on the black phosphorus heterojunction, so that the black phosphorus heterojunction can maintain better infrared detection performance and stability.

The invention provides a two-dimensional / three-dimensional perovskite heterojunction subjected to solvent heat treatment, a preparation method and application. After the two-dimensional perovskite passivation layer is prepared on the surface of the three-dimensional lead halide perovskite thin film, solvent heat treatment is carried out through AX / IPA mixed steam, lead halide by-products at a two-dimensional / three-dimensional perovskite heterojunction interface are eliminated, and the number of halide octahedron layers in two-dimensional perovskite is increased. According to the invention, the non-radiation load center on the surface of the film is effectively reduced, the passivation effect of the two-dimensional perovskite is enhanced, and the photoelectric conversion efficiency is improved; moreover, the out-of-plane transmission capability of carriers is enhanced, the conductivity in the vertical direction is improved, the current loss is reduced, and the responsivity and the detection rate of the device are improved. The problem of solvent incompatibility in two-dimensional / three-dimensional perovskite heterojunction prepared by a traditional solution method is solved, effective passivation of surface defects of the perovskite thin film is realized, and powerful technical support is provided for preparation of high-performance stable perovskite thin film photoelectric devices.

The application discloses a method for rapidly converting sludge into nutrient soil and the prepared nutrient soil, and belongs to the fields of sludge treatment and agronomy technology. Steps of the method for rapidly converting sludge into nutrient soil include: stirring and mixing hydrogen peroxide solution and ammonium sulfate, filtering after stirring and reacting under an acidic condition, washing, and drying to obtain ammonium persulfate; mixing calcium hydroxide and citric acid gypsum and then placing the mixture in a tube furnace to perform pyrolysis, so as to obtain a composite catalyst; adding the composite catalyst and the ammonium persulfate solution into sludge, stirring and reacting, and then the nutrient soil can be obtained. The macromolecules in the sludge are converted into small-molecule structures such as fulvic acid by the advanced oxidation technology, and the heavy metals in the sludge are passivated, so that the value of the nutrient soil is improved.

The application relates to the technical field of new energy safety monitoring and microelectronic sensor technology, and particularly relates to a hydrogen-sensitive sensor material and a preparation method and use method thereof, the preparation method comprising the following steps: adding tungsten source, palladium source and silver source into a mixed solvent of dimethylformamide and ethanol, then adding a high-molecular binder, continuously stirring at normal temperature until the solute is fully dispersed and uniform, and obtaining a precursor solution; loading the precursor solution into a syringe with a stainless steel nozzle, spraying the nanoscale fiber bundle from the syringe in an electrostatic spinning machine to a receiving plate covered with aluminum foil paper; collecting the nanoscale fiber bundle on the receiving plate, placing and drying, then placing in a muffle furnace, and performing programmed temperature calcination in an air atmosphere to obtain Pd-Ag / WO3 nanofiber powder; and dissolving the Pd-Ag / WO3 nanofiber powder with ethanol to complete the preparation. The application greatly simplifies the preparation process and guarantees high batch consistency.

The present application relates to the technical field of agricultural waste resource utilization and aquaculture environmental protection, and particularly relates to a method for regulating and controlling oxygenic composting of aquaculture waste by ferrous sulfate-gypsum modified biochar, which comprises the following steps: firstly, preparing ferrous sulfate-gypsum modified biochar; secondly, mixing the biochar with aquaculture sediment and carrying out closed culture; thirdly, mixing the biochar with submerged plants and adjusting the pile material; and finally, carrying out closed oxygenic fermentation by matching with a compound microbial agent containing trichoderma, actinomycetes and bacillus. The method can effectively shorten the composting start-up period, reduce the loss of nitrogen volatilization, and improve the humification degree of the pile. The obtained compost product meets the organic fertilizer standard and can be widely applied to the field of harmless treatment and resource utilization of aquaculture waste.

The application provides a kind of aromatic asymmetric lithium salt, lithium battery electrolyte and lithium battery, the aromatic asymmetric lithium salt has the structure general formula shown in formula I.The aromatic asymmetric lithium salt provided by the application has higher dissociation constant, ionic conductivity and lithium ion transference number in carbonate-based and ether-based electrolyte.Due to the structural symmetry of the lithium salt anion, the corrosion of the lithium battery positive electrode current collector aluminum foil is greatly reduced, the solubility of the decomposition product formed in the electrolyte is reduced, the surface of the aluminum foil can be effectively passivated, the corrosion behavior of the sulfonimide organic lithium salt on the positive electrode current collector under high temperature and high pressure is inhibited, and the stable operation of the battery is ensured.

The invention relates to the technical field of solar cells, and particularly provides a perovskite surface defect passivation material, a passivation unit, a preparation method and a cell. The perovskite surface defect passivation material provided by the invention comprises a hindered Lewis acid-base pair. The passivation unit of the perovskite cell provided by the invention comprises a perovskite layer and a passivation layer, and is obtained according to the passivation material. After the passivation material is used for preparing a battery, the environmental tolerance of the battery can be improved because the passivation material is used as a hindered Lewis acid-base pair, a large-volume group can effectively block the erosion of water vapor to perovskite, and meanwhile, the surface defects of the perovskite battery are effectively passivated. And the stability of the perovskite photovoltaic device is obviously improved.