41results about How to "Skeletal stability" patented technology

The invention belongs to the field of a lithium battery electrode material and particularly discloses a 3D lithium-philic porous metal current collector. The current collector comprises a 3D porous metal current collector and at least one of gold, silver and platinum compounded on a framework of the 3D porous metal current collector. The invention further discloses a preparation method and an application of the metal current collector. A 3D lithium-philic porous lithium ion negative electrode is particularly prepared. The current collector is advantaged in that at least one metal of gold, silver and platinum on the porous metal framework reduces the overpotential in the lithium metal nucleation and deposition process, uniform deposition and dissolution of lithium metal in the continuous cycle process are realized, growth of dendrites is effectively avoided, and the cycle life of a lithium metal battery is greatly prolonged.

The invention relates to a saline-alkali soil fruit tree planting method. The saline-alkali soil fruit tree planting method includes steps of taking common annual branchless fruit saplings for on-ridge root-limiting secondary culturing on land with soil property approximate to that of an orchard to be built or with the salt and alkali content lower by 0-30% than that of the common land, and applying nutrient soil to control salt by mixing in a sapling growing zone; preparing fulvic acid and naphthylacetic acid soluble powder into slurry which is used for wrapping the saplings before planting; increasing nutrient using microbial nutrition fertilizer in a sapling stage and improving resistance; performing measures like salt leaching, pressing and accumulating to improve sapling salt-alkali resistance at any time by controlling water, greatly improving salt and alkali resistance of saplings by a series of salt and alkali training, lifting the saplings and planting in the orchard to be built, dipping the saplings in the fulvic acid and naphthylacetic slurry again and broadcasting super-fine calcium carbonate in sapling holes. Various measure effects are outstanding, the survival rate of the saplings is remarkably increased in the salt and alkali area, the orchard is even, and the high yield can be realized in the second to third year and the quality is high.

The invention relates to a 2,3'5,5'-diphenyl tetracarboxylic acid cadmium complex and a preparation method thereof and relates to the field of cadmium complex fluorescent materials. A chemical formula of the 2,3'5,5'-diphenyl tetracarboxylic acid cadmium complex is {[Cd2(bptc)(bih)(H2O)2].H2O}n, wherein bptc is 2,3',5,5'-diphenyl tetra formic acid anion ligand, and bih is 1,6-di(imidazole-1-) hexane. The preparation method of the 2,3'5,5'-diphenyl tetracarboxylic acid cadmium complex comprises the following steps: under hydrothermal condition, dissolving 2,3',5,5'-diphenyl tetra formic acid, an inorganic base, 1,6-di(imidazole-1-) hexane and a cadmium salt in water, adding the obtained mixed solution into a closed reaction still, heating to 120-160 DEG C at a speed of 10 DEG C per hour, performing heat preservation for 3 days, then cooling to room temperature under natural conditions, so that colourless massive crystals are generated, and then washing and drying, so that the target product, namely the 2,3'5,5'-diphenyl tetracarboxylic acid cadmium complex, is obtained finally. The 2,3'5,5'-diphenyl tetracarboxylic acid cadmium complex has stable fluorescence property and high yield, and the preparation method is simple, and has good repeatability.

The invention discloses a metal coordination porphyrin-based conjugated polymer as well as a preparation method and application thereof in photocatalytic degradation of organic pollutants. The catalyst provided by the invention has an approximately planar macrocyclic molecule with a 18pi conjugated skeleton, a stable rigid structure and a very stable highly conjugated system, so that the catalysthas excellent photoelectric conversion efficiency, a wide absorption spectrum range, strong oxidation-reduction capability and good chemical and thermal stability, metal coordination porphyrin is usedas an active center, a large number of derivatives can be derived, and the method has important application value in the aspects of photocatalytic degradation of environmental pollutants and the like.

The invention discloses a hollow tubular sulfur-doped carbon nitride/graphite-phase carbon nitride homojunction photocatalyst, and a preparation method and application thereof. The photocatalyst takeshollow tubular sulfur-doped carbon nitride as a carrier; graphite-phase carbon nitride is loaded on the hollow tubular sulfur-doped carbon nitride; and the hollow tubular sulfur-doped carbon nitrideand the graphite-phase carbon nitride form a homojunction. The preparation method comprises the following steps: mixing and stirring melamine and trithiocyanuric acid, carrying out a hydrothermal reaction to obtain a solid tubular melamine/trithiocyanuric acid compound, modifying the surface of the solid tubular melamine/trithiocyanuric acid compound with urea, and carrying out calcining to obtainthe product. The hollow tubular sulfur-doped carbon nitride/graphite-phase carbon nitride homojunction photocatalyst can efficiently degrade tetracycline hydrochloride or tetracycline-containing wastewater with a pH value of 2-11, and has the advantages of high light absorption capacity, low photo-induced electron-hole recombination rate, good photocatalytic performance, good stability, applicability to a wide pH scope and the like.

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The carrier consists of a small crystal particle Y-shaped molecular sieve and alumina, wherein the small crystal particle Y-shaped molecular sieve has high crystallinity, high ratio of silicate to aluminium, continuous and stable framework structure and smooth pores. A hydrocracking catalyst prepared from the carrier has the characteristics of high catalytic activity, high heavy naphtha selectivity, high potential aromatic hydrocarbon content, low bureau of mines correlation index (BMCI) value of hydrocracking tail oil and the like.

The invention provides dry-mixed interface mortar and a preparation method thereof. Hectorite and halloysite are added into a self-made machine-made sand to increase the viscosity of the sand, thereby having viscosity while forming a mortar framework, and enhancing the overall viscosity of the mortar. Fly ash is doped, so that the mortar has crack resistance. The hardness of the nano silicon oxide is high, and meanwhile, attachment points are increased. Silica sol is added into machine-made sand particles and cured to form a firm gel structure, and the viscosity is generated. The modified latex powder improves the adhesive property, has certain thickening property and permeability, and can permeate into two adhered wall bodies to shrink pores and cracks, thereby improving various properties such as surface hardness, impermeability, wear resistance and the like, and effectively preventing dry shrinkage and cracking of the mortar. Nano glass fibers improve the curing effect of the mortar. The coagulant adjusts the coagulation speed of the mortar, so that the density of the mortar is increased, and the strength is improved; The mortar is prevented from cracking due to the existence of a water-retaining agent component.

The invention discloses a green biological inhibition fire preventing and extinguishing material which comprises, by weight, 60-100 parts of water, 8-20 parts of aloe extracts, 10-20 parts of basic reagents and 10-20 parts of prepared reagents. The basic reagents include acetone, potassium iodide, potassium bromide, potassium peroxodisulfate and N-isopropylacrylamide, and the prepared reagents include sodium bicarbonate, polydimethylsiloxane, anhydrous sodium sulfite and acrylic acid. A pH (potential of hydrogen) of the biological inhibition fire preventing and extinguishing material is 7-7.3.The invention further discloses a preparation method of the biological inhibition fire preventing and extinguishing material. The method includes the steps: uniformly mixing the aloe extracts and water; sequentially adding the basic reagents and the prepared reagents; adjusting pH and standing. Penetrability and diffusivity of the biological inhibition fire preventing and extinguishing material are improved, fire extinguishing performance is enhanced, and the material is green and environmentally friendly. According to the method, raw materials are uniformly mixed step by step to prepare thebiological inhibition fire preventing and extinguishing material, and the fire extinguishing performance of the material is further enhanced.

The invention discloses a tree-form cultivation system and method for ficus carica. An improved tree form is designed, a tree body formed according to the tree form cultivated by using the method disclosed by the invention is appropriate in distances among fruiting branches, proper in height, firm in skeleton, neat in crown, obvious in principal and subordinate and uniform in branches, so that theventilation and light transmittance properties are good, ficus carica trees can favorably grow and fruit, the yield is stable and is increased, it is also convenient to manage and pick fruits, and problems to be solved urgently in current ficus carica cultivation are solved.

The invention provides an organic electroluminescent compound. The organic electroluminescent compound has a structure shown as a formula (I). Compared with the prior art, the organic electroluminescent compound provided by the invention contains a skeleton formed by connecting B with a derivative anthracene type fused ring and a nitrogen heterocyclic ring, has a certain electron withdrawing capability, and is connected with a linker and a donor to form a D-linker-A or D-A type compound; the organic electroluminescent material has a relatively twisted structure, and can reduce the overlappingdegree of HOMO and LUMO, thereby obtaining a relatively small singlet state and triplet state energy level difference, further realizing efficient inverse intersystem jump, enabling more T1-state excitons to jump to an S1 state to emit fluorescence, improving the exciton utilization rate, and achieving relatively high luminous efficiency.

The present invention discloses a diazepam lipocalin imitating antibody, wherein the DNA sequence expressing the antibody is the sequence represented by SEQ ID NO.1 in the sequence table. According to the present invention, with the diazepam lipocalin imitating antibody, the foundation is established for rapid diazepam detection; in lipocalin, the encapsulation efficiency of the recognition sites capable of interacting with target molecules is up to 95% while the encapsulation efficiency of the binding sites within the antibody molecule is only 66%, wherein the large mutual contact surface (Ingo, 2003) capable of binding with target molecules exists in the lipocalin molecule so as to cause the previous conditions; and the lipocalin has characteristics of simple structure, small molecular weight, large recognition sites capable of binding with target molecules and stable skeleton, and has unique advantages compared with the antibody.

The invention discloses a preparation method of an efficient palladium-carbon catalyst capable of being used repeatedly, which specifically comprises the following steps: adding activated carbon into ethanol for ultrasonic cleaning, and carrying out acid and alkali soaking; coating the palladium acetate-acetone solution on the surface of an activated carbon substrate to obtain coated activated carbon; adding hydroxypropyl methyl cellulose and ethyl cellulose into methanol, and distilling to form a slightly thick liquid; then carrying out methanol steam treatment on a coated activated carbon base material, pouring the slightly thick liquid into the coated activated carbon base material under negative pressure, and drying to obtain a prefabricated sealing block; hydrolyzing the prefabricated sealing block in a humid environment to obtain a palladium-carbon prefabricated sealing block; and adding into water, stirring, reducing and washing to obtain the palladium-carbon catalyst. Through modification of a carbon carrier, groups on the surface area of the carrier are enriched, adhesion of a palladium active component is facilitated, and the activity of the catalyst is improved; and through secondary cellulose reinforcement, the skeleton of the carbon carrier is firmer and can resist the external force in the use process, so that the service life of the catalyst is prolonged.

Provided is an organic electroluminescent (organic EL) element that exhibits a high efficiency while having a low drive voltage, and that exhibits a high stability while being driven. The organic electroluminescent element contains, in a light-emitting layer formed between an anode and a cathode opposing each other, a first host selected from indolocarbazole compounds represented by general formula (1), a second host selected from carbazole compounds represented by general formula (2), and a light-emitting dopant material. Here, Ar² and Ar³ are aromatic hydrocarbon groups, L¹ is a direct bond or a phenylene group, and L² is an o-phenylene group.